![Soumen Mandal PhD](https://profiles-cardiff.imgix.net/attachments/3781?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Dr Soumen Mandal
PhD
Research Associate
Condensed Matter and Photonics Group
School of Physics and Astronomy
- MANDALS2@cardiff.ac.uk
- Queen's Buildings - North Building, Room N/0.05, 5 The Parade, Newport Road, Cardiff, CF24 3AA
Overview
I am a Post-Doctoral Research Associate working in School of Physics and Astronomy at Cardiff University, U.K. in the group of Prof. Oliver Williams. My current research interest is the study of diamond as a material for device applications. I am mostly interested in using nanocrystalline diamond grown on silicon and other wafers for these applications. Nanocrystalline diamond, even though slightly inferior to single crystal diamond, offers large area, easy scalability of the devices and cost effectiveness. One of the major drawback of the artificially grown nanodiamond film is its surface roughness. We have overcome this problem by developing a polishing technique capable of producing sub-nanometer surface roughness. Over the years Cardiff Diamond Foundry has published a few papers on polishing of thin film diamond. At Cardiff Diamond Foundry we have also designed a NIRIM type low cost CVD reactor for diamond growth. The full design of this reactor can be found on this wikiversity page.
Below I list some of the major acievements and industrial enegagements
Achievements
Boron doped diamond SQUID, First SQUID made from boron doped diamond. This was also the first SQUID that could operate at very high magnetic field (~4T).
Superconducting diamond cantilever, Developed first cantilever from superconducting diamond. With an fQ factor 1011, the BDD micro mechanical system demonstrated a state-of-the-art performance for such devices. It was also the first monolithic superconducting MEMS
Chemical mechanical polishing (CMP) of diamond thin films, A process for polishing thin diamond films which cannot be polished by traditional techniques like mechanical polishing. With this technique surface roughnesses below 2nm RMS have been achieved.
Chemical nucleation of diamond, A cleanroom compatible seeding technique for diamond growth using chemical precursors.
Growth of thick diamond layer on AlN, The growth of thick diamond layer on AlN paves the way for integration of diamond heat sink layer on GaN high power devices.
Diamond based filters, Co-inventor of diamond based electropositive filter element for liquid filtration
Industrial Engagements
Evince Technology Limited, UK – 2014 – 2021, Development of low cost diamond reactor and process for growing semiconducting boron doped diamond on single crystal substrates. Chemical Mechanical polishing of diamonds for electronic device applications.
Qioptiq, UK – 2016 – 2018, Development for high growth rate thick diamond films for optical applications.
Precision Ceramics, UK – 2017 – 2018, Growth of diamond layer on Boron Nitride composite.
W & L Coating Systems GmbH, Germany – 2020, Characterisation of diamond solutions for diamond growth.
Applied Microengineering Ltd, UK – 2022 – till date, Development of direct bond between diamond and other materials.
Publication
2024
- Cuenca, J. A. et al. 2024. Dielectric properties of diamond using an X-band microwave split dielectric resonator. Carbon 221, article number: 118860. (10.1016/j.carbon.2024.118860)
- Sedov, V. et al. 2024. Narrowband photoluminescence of Tin-Vacancy colour centres in Sn-doped chemical vapour deposition diamond microcrystals. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 382(2265), article number: 20230167. (10.1098/rsta.2023.0167)
2023
- Hrabovsky, J. et al. 2023. Laser-patterned boron-doped diamond electrodes with precise control of sp2/sp3 carbon lateral distribution. Applied Surface Science 639, article number: 158268. (10.1016/j.apsusc.2023.158268)
- Thomas, E. L. H., Stritt, J., Mandal, S., Imboden, M. and Williams, O. A. 2023. Polycrystalline diamond micro‐hotplates. Small 19(48), article number: 2303976. (10.1002/smll.202303976)
- March, J. E. et al. 2023. Long spin coherence and relaxation times in nanodiamonds milled from polycrystalline 12C diamond. Physical Review Applied 20(4), article number: 44045. (10.1103/PhysRevApplied.20.044045)
- Leigh, W. et al. 2023. Monitoring of the initial stages of diamond growth on aluminum nitride using in situ spectroscopic ellipsometry. ACS Omega 8(33), pp. 30442-30449. (10.1021/acsomega.3c03609)
- Mandal, S., Arts, K., Morgan, D. J., Chen, Z. and Williams, O. A. 2023. Zeta potential and nanodiamond self assembly assisted diamond growth on lithium niobate and lithium tantalate single crystal. Carbon 212, article number: 118160. (10.1016/j.carbon.2023.118160)
- Rafique, T. et al. 2023. Fabrication of hollow Ni1-xZnxFe2O4 spheres (x = 0.0, 0.5, 1.0) as high-performance electromagnetic absorber material. Journal of Magnetism and Magnetic Materials 572, article number: 170647. (10.1016/j.jmmm.2023.170647)
- Sedov, V. et al. 2023. Effect of diamond seeds size on the adhesion of CVD diamond coatings on WC-Co instrument. Surfaces and Interfaces 38, article number: 102861. (10.1016/j.surfin.2023.102861)
- Sedov, V. S. et al. 2023. Microporous poly- and monocrystalline diamond films produced from chemical vapor deposited diamond-germanium composites. Nanoscale Advances 5, pp. 1307-1315. (10.1039/D2NA00688J)
- Zelenský, M. et al. 2023. Chem-mechanical polishing influenced morphology, spectral and electrochemical characteristics of boron doped diamond. Carbon 203, pp. 363-376. (10.1016/j.carbon.2022.11.069)
- Cuenca, J. A. et al. 2023. Microwave conductivity of boron-doped nanodiamond particles. Presented at: 2022 Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, 29 November - 02 December 20222022 Asia-Pacific Microwave Conference (APMC). IEEE, (10.23919/APMC55665.2022.9999762)
- Cuenca, J. A., Leigh, W., Thomas, E. L., Mandal, S. and Williams, O. A. 2023. Modelling deposition uniformity in microwave plasma cvd diamond over 2" Si wafers. Presented at: 2022 Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, 29 November - 02 December 20222022 Asia-Pacific Microwave Conference (APMC). IEEE, (10.23919/APMC55665.2022.9999754)
- Leigh, W. G., Cuenca, J. A., Thomas, E. L., Mandal, S. and Williams, O. A. 2023. Mapping the effect of substrate temperature inhomogeneity during microwave plasma-enhanced chemical vapour deposition nanocrystalline diamond growth. Carbon 201, pp. 228-337. (10.1016/j.carbon.2022.09.036)
- Cuenca, J. A. et al. 2023. Superconducting boron doped nanocrystalline diamond microwave coplanar resonator. Carbon 201, pp. 251-259. (10.1016/j.carbon.2022.08.084)
2022
- Mandal, S., Shaw, G. and Williams, O. A. 2022. Comparison of nanodiamond coated quartz filter with commercial electropositive filters: Zeta potential and dye retention study. Carbon 199, pp. 439-443. (10.1016/j.carbon.2022.08.021)
- Leigh, W. G., Thomas, E. L., Cuenca, J. A., Mandal, S. and Williams, O. A. 2022. In-situ monitoring of microwave plasma-enhanced chemical vapour deposition diamond growth on silicon using spectroscopic ellipsometry. Carbon 202, pp. 204-212. (10.1016/j.carbon.2022.10.049)
- Pascoe, M. J., Mandal, S., Williams, O. A. and Maillard, J. -. 2022. Impact of material properties in determining quaternary ammonium compound adsorption and wipe product efficacy against biofilms. Journal of Hospital Infection 126, pp. 37-43. (10.1016/j.jhin.2022.03.013)
- Bose, M. et al. 2022. Low-noise diamond-based D.C. nano-SQUIDs. ACS Applied Electronic Materials 4(5), pp. 2246-2252. (10.1021/acsaelm.2c00048)
- Wood, B. D. et al. 2022. Long spin coherence times of nitrogen vacancy centers in milled nanodiamonds. Physical Review B 105(20), article number: 205401. (10.1103/PhysRevB.105.205401)
- Kuznetsov, S. et al. 2022. Cerium-doped gadolinium-scandium-aluminum garnet powders: synthesis and use in X-ray luminescent diamond composites. Ceramics International 48(9), pp. 12962-12970. (10.1016/j.ceramint.2022.01.169)
- Cuenca, J. A., Mandal, S., Thomas, E. L. and Williams, O. A. 2022. Microwave plasma modelling in clamshell chemical vapour deposition diamond reactors. Diamond and Related Materials 124, article number: 108917. (10.1016/j.diamond.2022.108917)
2021
- Mandal, S., Arts, K., Knoops, H. C., Cuenca, J. A., Klemencic, G. M. and Williams, O. A. 2021. Surface zeta potential and diamond growth on gallium oxide single crystal. Carbon 181, pp. 79-86. (10.1016/j.carbon.2021.04.100)
- Lynch, S. A. et al. 2021. Rydberg excitons in synthetic cuprous oxide (Cu2O). Physical Review Materials 5(8), article number: 86402. (10.1103/PhysRevMaterials.5.084602)
- Manifold, S. . A., Klemencic, G., Thomas, E. L., Mandal, S., Bland, H., Giblin, S. R. and Williams, O. A. 2021. Contact resistance of various metallisation schemes to superconducting boron doped diamond between 1.9 and 300 K. Carbon 179, pp. 13-19. (10.1016/j.carbon.2021.02.079)
- Guo, T. et al. 2021. Electrochemistry of nitrogen and boron bi-element incorporated diamond films. Carbon 178, pp. 19-25. (10.1016/j.carbon.2021.02.062)
- Klemencic, G. et al. 2021. Phase slips and metastability in granular boron-doped nanocrystalline diamond microbridges. Carbon 175, pp. 43-49. (10.1016/j.carbon.2020.12.042)
- Sedov, V. et al. 2021. CVD synthesis of multi-layered polycrystalline diamond films with reduced roughness using time-limited injections of N2 gas. Diamond and Related Materials 114, article number: 108333. (10.1016/j.diamond.2021.108333)
- Cuenca, J. A. et al. 2021. Thermal stress modelling of diamond on GaN/III-Nitride membranes. Carbon 174, pp. 647-661. (10.1016/j.carbon.2020.11.067)
- Bland, H. A., Centeleghe, I. A., Mandal, S., Thomas, E. L. H., Maillard, J. and Williams, O. A. 2021. Electropositive nanodiamond-coated quartz microfiber membranes for virus and dye filtration. ACS Applied Nano Materials 4(3), pp. 3252-3261. (10.1021/acsanm.1c00439)
- Mandal, S. 2021. Nucleation of diamond films on heterogeneous substrates: a review. RSC Advances 11(17), pp. 10159-10182. (10.1039/D1RA00397F)
2020
- Sow, M. et al. 2020. High-throughput nitrogen-vacancy center imaging for nanodiamond photophysical characterization and pH nanosensing. Nanoscale 12(42), pp. 21821-21821. (10.1039/D0NR05931E)
- Smith, M. D. et al. 2020. GaN-on-diamond technology platform: bonding-free membrane manufacturing process. AIP Advances 10(3), article number: 35306. (10.1063/1.5129229)
- Cuenca, J. A., Mandal, S., Morgan, D. J., Snowball, M., Porch, A. and Williams, O. A. 2020. Dielectric spectroscopy of hydrogen treated hexagonal boron nitride ceramics. ACS Applied Electronic Materials 2(5), pp. 1193-1202. (10.1021/acsaelm.9b00767)
2019
- Mandal, S. et al. 2019. Thick, adherent diamond films on AlN with low thermal barrier resistance. ACS Applied Materials and Interfaces 11(43), pp. 40826-40834. (10.1021/acsami.9b13869)
- Ahmed, A., Gines, L., Mandal, S., Song, C., Williams, O. A., Sarmiento, M. N. and Cheng, C. 2019. Facile amine termination of nanodiamond particles and their surface reaction dynamics. ACS Omega 4(16), pp. 16715-16723. (10.1021/acsomega.9b00776)
- Bland, H. A. et al. 2019. Author correction: superconducting diamond on silicon nitride for device applications. Scientific Reports 9(1), pp. -., article number: 11012. (10.1038/s41598-019-46256-y)
- Salman, M., Klemencic, G. M., Mandal, S., Manifold, S., Mustafa, L., Williams, O. A. and Giblin, S. R. 2019. Quantitative analysis of the interaction between a dc SQUID and an integrated micromechanical doubly clamped cantilever. Journal of Applied Physics 125(22), article number: 224503. (10.1063/1.5090958)
- Mandal, S., Bland, H. A., Cuenca, J. A., Snowball, M. and Williams, O. A. 2019. Superconducting boron doped nanocrystalline diamond on boron nitride ceramics. Nanoscale 11(21), pp. 10266-10272. (10.1039/C9NR02729G)
- Mandal, S., Thomas, E. L. H., Werrell, J. M., Klemencic, G. M., Ash, J., Brousseau, E. B. and Williams, O. A. 2019. Chemical mechanical polishing of nanocrystalline diamond. In: Yang, N. ed. Novel Aspects of Diamond: From Growth to Applications., Vol. 121. Topics in Applied Physics Chem: Springer, pp. 53-89., (10.1007/978-3-030-12469-4_3)
- Klemencic, G. M., Fellows, J. M., Werrell, J. M., Mandal, S., Giblin, S. R., Smith, R. A. and Williams, O. A. 2019. Observation of a superconducting glass state in granular superconducting diamond. Scientific Reports 9, article number: 4578. (10.1038/s41598-019-40306-1)
- Bland, H. A. et al. 2019. Superconducting diamond on silicon nitride for device applications. Scientific Reports 9, article number: 2911. (10.1038/s41598-019-39707-z)
- Panduranga, P. et al. 2019. Hybrid diamond/silicon suspended integrated photonic platform using SF6 isotropic etching. Presented at: 2nd IEEE British and Irish Conference on Optics and Photonics (BICOP 2019), London, England, 11-13 December 20192019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP). IEEE pp. 1-4., (10.1109/BICOP48819.2019.9059586)
2018
- Gines, L. et al. 2018. Production of metal-free diamond nanoparticles. ACS Omega 3(11), pp. 16099-16104. (10.1021/acsomega.8b02067)
- Lindner, S. et al. 2018. Strongly inhomogeneous distribution of spectral properties of silicon-vacancy color centers in nanodiamonds. New Journal of Physics 20(11), article number: 115002. (10.1088/1367-2630/aae93f)
- Abdou, A. et al. 2018. Air-clad suspended nanocrystalline diamond ridge waveguides. Optics Express 26(11), article number: 13883. (10.1364/OE.26.013883)
- Mandal, S., Thomas, E. L. H., Gines, L., Morgan, D., Green, J., Brousseau, E. B. and Williams, O. A. 2018. Redox agent enhanced chemical mechanical polishing of thin film diamond. Carbon 130, pp. 25-30. (10.1016/j.carbon.2017.12.077)
- Yu, S. et al. 2018. Battery-like supercapacitors from vertically aligned carbon nanofiber coated diamond: design and demonstrator. Advanced Energy Materials 8(12), article number: 1702947. (10.1002/aenm.201702947)
- Frangeskou, A. C., Rahman, A. A. T. M., Gines, L., Mandal, S., Williams, O. A., Barker, P. F. and Morley, G. 2018. Pure nanodiamonds for levitated optomechanics in vacuum. New Journal of Physics 20, article number: 43016. (10.1088/1367-2630/aab700)
- Thomas, E., Gines, L., Mandal, S., Klemencic, G. and Williams, O. A. 2018. A simple, space constrained NIRIM type reactor for chemical vapour deposition of diamond. AIP Advances 8, article number: 35325. (10.1063/1.5009182)
- Braunbeck, G., Mandal, S., Touge, M., Williams, O. A. and Reinhard, F. 2018. Effect of ultraprecision polishing techniques on coherence times of shallow nitrogen-vacancy centers in diamond. Diamond and Related Materials 85, pp. 18-22. (10.1016/j.diamond.2018.03.026)
- Cuenca, J. A. et al. 2018. Microwave permittivity of trace sp2 carbon impurities in sub-micron diamond powders. ACS Omega 3(2), pp. 2183-2192. (10.1021/acsomega.7b02000)
2017
- Klemencic, G. M., Mandal, S., Werrell, J. M., Giblin, S. R. and Williams, O. A. 2017. Superconductivity in planarised nanocrystalline diamond films. Science and Technology of Advanced Materials 18(1) (10.1080/14686996.2017.1286223)
- Mandal, S. et al. 2017. Surface zeta potential and diamond seeding on gallium nitride films. ACS Omega 2(10), pp. 7275-7280. (10.1021/acsomega.7b01069)
- Thomas, E. et al. 2017. Spectroscopic ellipsometry of nanocrystalline diamond film growth. ACS Omega 2(10), pp. 6715-6727. (10.1021/acsomega.7b00866)
- Klemencic, G. M., Fellows, J. M., Werrell, J. M., Mandal, S., Giblin, S. R., Smith, R. A. and Williams, O. A. 2017. Fluctuation spectroscopy as a probe of granular superconducting diamond films. Physical Review Materials 1(4), article number: 44801. (10.1103/PhysRevMaterials.1.044801)
- Gines, L., Mandal, S., Ahmed, A., Cheng, C., Sow, M. and Williams, O. A. 2017. Positive zeta potential of nanodiamonds. Nanoscale 9(34), pp. 12549-12555. (10.1039/C7NR03200E)
- Ayres, Z. J., Newland, J. C., Newton, M. E., Mandal, S., Williams, O. A. and Macpherson, J. V. 2017. Impact of chemical vapour deposition plasma inhomogeneity on the spatial variation of sp 2 carbon in boron doped diamond electrodes. Carbon 121, pp. 434-442. (10.1016/j.carbon.2017.06.008)
- Titova, N. et al. 2017. Slow electron-phonon cooling in superconducting diamond films. IEEE Transactions on Applied Superconductivity 27(4), article number: 7501104. (10.1109/TASC.2016.2638199)
- Yu, S. et al. 2017. Battery-like supercapacitors from diamond networks and water-soluble redox electrolytes. Journal of Materials Chemistry A 5(4), pp. 1778-1785. (10.1039/C6TA08607A)
- Werrell, J. et al. 2017. Effect of slurry composition on the chemical mechanical polishing of thin diamond films. Science and Technology of Advanced Materials 18(1), pp. 654-663. (10.1080/14686996.2017.1366815.)
2016
- Ahmed, A. -., Mandal, S., Gines, L., Williams, O. A. and Cheng, C. 2016. Low temperature catalytic reactivity of nanodiamond in molecular hydrogen. Carbon 110, pp. 438-442. (10.1016/j.carbon.2016.09.019)
- Mandal, S., Thomas, E. L. H., Jenny, T. A. and Williams, O. A. 2016. Chemical nucleation of diamond films. ACS Applied Materials and Interfaces 8(39), pp. 26220-26225. (10.1021/acsami.6b08286)
2015
- Cuenca, J. A., Thomas, E. L. H., Mandal, S., Williams, O. A. and Porch, A. 2015. Investigating the broadband microwave absorption of nanodiamond impurities. IEEE Transactions on Microwave Theory and Techniques 63(12), pp. 4110-4118. (10.1109/TMTT.2015.2495156)
- Yu, S. et al. 2015. Electrochemical supercapacitors from diamond. Journal of Physical Chemistry C 119(33), pp. 18918-18926. (10.1021/acs.jpcc.5b04719)
- Cuenca, J. A., Thomas, E. L. H., Mandal, S., Williams, O. A. and Porch, A. 2015. Microwave determination of sp2 carbon fraction in nanodiamond powders. Carbon 81, pp. 174-178. (10.1016/j.carbon.2014.09.046)
2014
- Bautze, T., Mandal, S., Williams, O. A., Rodière, P., Meunier, T. and Bäuerle, C. 2014. Superconducting nano-mechanical diamond resonators. Carbon 72, pp. 100-105. (10.1016/j.carbon.2014.01.060)
- Thomas, E. L. H., Mandal, S., Brousseau, E. B. J. P. and Williams, O. A. 2014. Silica based polishing of {100} and {111} single crystal diamond. Science and Technology of Advanced Materials 15(3), pp. 1-7., article number: 35013. (10.1088/1468-6996/15/3/035013)
- Thomas, E. L. H., Nelson, G. W., Mandal, S., Foord, J. S. and Williams, O. A. 2014. Chemical mechanical polishing of thin film diamond. Carbon 68, pp. 473-479. (10.1016/j.carbon.2013.11.023)
- Cuenca, J., Thomas, E., Williams, O. A., Mandal, S. and Porch, A. 2014. Broadband microwave measurements of nanodiamond. Presented at: Microwave Conference (APMC), 2014 Asia-Pacific, Sendai, Japan, 4-7 Nov 2014Microwave Conference (APMC), 2014 Asia-Pacific. pp. 1-3.
- Mandal, S., Bautze, T. and Bäuerle, C. 2014. Superconductivity in nanostructured boron-doped diamond and its application to device fabrication. In: Williams, O. A. ed. Nanodiamond. Royal Society of Chemistry, pp. 385-410., (10.1039/9781849737616-00385)
2013
- Szirmai, P. et al. 2013. Observation of conduction electron spin resonance in boron-doped diamond. Physical Review B 87(19), article number: 195132. (10.1103/PhysRevB.87.195132)
2012
- Szirmai, P., Pichler, T., Williams, O. A., Mandal, S., Bäuerle, C. and Simon, F. 2012. A detailed analysis of the Raman spectra in superconducting boron doped nanocrystalline diamond. Physica Status Solidi B Basic Research 249(12), pp. 2656-2659. (10.1002/pssb.201200461)
2011
- Mandal, S. et al. 2011. The Diamond Superconducting Quantum Interference Device. ACS Nano 5(9), pp. 7144-7148. (10.1021/nn2018396)
- Mandal, S. 2011. A comparative study of angle dependent magnetoresistance in [001] and [110] La2/3Sr1/3MnO3. Journal of Superconductivity and Novel Magnetism 24(5), pp. 1501-1504. (10.1007/s10948-010-0882-x)
- Mandal, S., Bautze, T., Blinder, R., Meunier, T., Saminadayar, L. and Bauerle, C. 2011. Efficient radio frequency filters for space constrained cryogenic setups. Review of Scientific Instruments 82(2), article number: 24704. (10.1063/1.3543736)
2010
- Mandal, S. et al. 2010. Nanostructures made from superconducting boron-doped diamond. Nanotechnology 21(19), article number: 195303. (10.1088/0957-4484/21/19/195303)
- Mandal, S. et al. 2010. Detailed study of superconductivity in nanostructured nanocrystalline boron doped diamond thin films. Physica Status Solidi a Applications and Materials Science 207(9), pp. 2017-2022. (10.1002/pssa.201000008)
- Mandal, S. 2010. Magnetoresistance studies of La2/3Sr1/3MnO3-YBa2Cu3O7-La2/3Sr1/3MnO3 trilayers with ferromagnetic coupling along the nodal direction of YBa2Cu3O7. Physical Review B: Condensed Matter and Materials Physics 81(1), article number: 14515. (10.1103/PhysRevB.81.014515)
2008
- Mandal, S. and Budhani, R. C. 2008. Magnetization depinning transition, anisotropic magnetoresistance and inplane anisotropy in two polytypes of La2/3Sr1/3MnO3 epitaxial films. Journal of Magnetism and Magnetic Materials 320(23), pp. 3323-3333. (10.1016/j.jmmm.2008.07.002)
- Mandal, S., Budhani, R., He, J. and Zhu, Y. 2008. Diverging giant magnetoresistance in ferromagnet-superconductor-ferromagnet trilayers. Physical Review B: Condensed Matter and Materials Physics 78(9), article number: 94502. (10.1103/PhysRevB.78.094502)
2007
- Li, P., Mandal, S., Budhani, R. and Greene, R. 2007. Correlation between incoherent phase fluctuations and disorder in Y1−xPrxBa2Cu3O7−δ epitaxial films from Nernst effect measurements. Physical Review B: Condensed Matter and Materials Physics 75(18), article number: 184509. (10.1103/PhysRevB.75.184509)
2006
- Mandal, S., Bose, S. K., Sharma, R., Budhani, R. C., Padhan, P. and Prellier, W. 2006. Growth of [110] La2/3Sr1/3MnO3–YBa2Cu3O7 heterostructures. Applied Physics Letters 89(18), article number: 182508. (10.1063/1.2374692)
2005
- Budhani, R. C., Pant, P., Rakshit, R. K., Senapati, K., Mandal, S., Pandey, N. K. and Kumar, J. 2005. Magnetotransport in epitaxial films of the degenerate semiconductor Zn1−xCoxO. Journal of Physics: Condensed Matter 17(1), article number: 75. (10.1088/0953-8984/17/1/008)
Articles
- Cuenca, J. A. et al. 2024. Dielectric properties of diamond using an X-band microwave split dielectric resonator. Carbon 221, article number: 118860. (10.1016/j.carbon.2024.118860)
- Sedov, V. et al. 2024. Narrowband photoluminescence of Tin-Vacancy colour centres in Sn-doped chemical vapour deposition diamond microcrystals. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 382(2265), article number: 20230167. (10.1098/rsta.2023.0167)
- Hrabovsky, J. et al. 2023. Laser-patterned boron-doped diamond electrodes with precise control of sp2/sp3 carbon lateral distribution. Applied Surface Science 639, article number: 158268. (10.1016/j.apsusc.2023.158268)
- Thomas, E. L. H., Stritt, J., Mandal, S., Imboden, M. and Williams, O. A. 2023. Polycrystalline diamond micro‐hotplates. Small 19(48), article number: 2303976. (10.1002/smll.202303976)
- March, J. E. et al. 2023. Long spin coherence and relaxation times in nanodiamonds milled from polycrystalline 12C diamond. Physical Review Applied 20(4), article number: 44045. (10.1103/PhysRevApplied.20.044045)
- Leigh, W. et al. 2023. Monitoring of the initial stages of diamond growth on aluminum nitride using in situ spectroscopic ellipsometry. ACS Omega 8(33), pp. 30442-30449. (10.1021/acsomega.3c03609)
- Mandal, S., Arts, K., Morgan, D. J., Chen, Z. and Williams, O. A. 2023. Zeta potential and nanodiamond self assembly assisted diamond growth on lithium niobate and lithium tantalate single crystal. Carbon 212, article number: 118160. (10.1016/j.carbon.2023.118160)
- Rafique, T. et al. 2023. Fabrication of hollow Ni1-xZnxFe2O4 spheres (x = 0.0, 0.5, 1.0) as high-performance electromagnetic absorber material. Journal of Magnetism and Magnetic Materials 572, article number: 170647. (10.1016/j.jmmm.2023.170647)
- Sedov, V. et al. 2023. Effect of diamond seeds size on the adhesion of CVD diamond coatings on WC-Co instrument. Surfaces and Interfaces 38, article number: 102861. (10.1016/j.surfin.2023.102861)
- Sedov, V. S. et al. 2023. Microporous poly- and monocrystalline diamond films produced from chemical vapor deposited diamond-germanium composites. Nanoscale Advances 5, pp. 1307-1315. (10.1039/D2NA00688J)
- Zelenský, M. et al. 2023. Chem-mechanical polishing influenced morphology, spectral and electrochemical characteristics of boron doped diamond. Carbon 203, pp. 363-376. (10.1016/j.carbon.2022.11.069)
- Leigh, W. G., Cuenca, J. A., Thomas, E. L., Mandal, S. and Williams, O. A. 2023. Mapping the effect of substrate temperature inhomogeneity during microwave plasma-enhanced chemical vapour deposition nanocrystalline diamond growth. Carbon 201, pp. 228-337. (10.1016/j.carbon.2022.09.036)
- Cuenca, J. A. et al. 2023. Superconducting boron doped nanocrystalline diamond microwave coplanar resonator. Carbon 201, pp. 251-259. (10.1016/j.carbon.2022.08.084)
- Mandal, S., Shaw, G. and Williams, O. A. 2022. Comparison of nanodiamond coated quartz filter with commercial electropositive filters: Zeta potential and dye retention study. Carbon 199, pp. 439-443. (10.1016/j.carbon.2022.08.021)
- Leigh, W. G., Thomas, E. L., Cuenca, J. A., Mandal, S. and Williams, O. A. 2022. In-situ monitoring of microwave plasma-enhanced chemical vapour deposition diamond growth on silicon using spectroscopic ellipsometry. Carbon 202, pp. 204-212. (10.1016/j.carbon.2022.10.049)
- Pascoe, M. J., Mandal, S., Williams, O. A. and Maillard, J. -. 2022. Impact of material properties in determining quaternary ammonium compound adsorption and wipe product efficacy against biofilms. Journal of Hospital Infection 126, pp. 37-43. (10.1016/j.jhin.2022.03.013)
- Bose, M. et al. 2022. Low-noise diamond-based D.C. nano-SQUIDs. ACS Applied Electronic Materials 4(5), pp. 2246-2252. (10.1021/acsaelm.2c00048)
- Wood, B. D. et al. 2022. Long spin coherence times of nitrogen vacancy centers in milled nanodiamonds. Physical Review B 105(20), article number: 205401. (10.1103/PhysRevB.105.205401)
- Kuznetsov, S. et al. 2022. Cerium-doped gadolinium-scandium-aluminum garnet powders: synthesis and use in X-ray luminescent diamond composites. Ceramics International 48(9), pp. 12962-12970. (10.1016/j.ceramint.2022.01.169)
- Cuenca, J. A., Mandal, S., Thomas, E. L. and Williams, O. A. 2022. Microwave plasma modelling in clamshell chemical vapour deposition diamond reactors. Diamond and Related Materials 124, article number: 108917. (10.1016/j.diamond.2022.108917)
- Mandal, S., Arts, K., Knoops, H. C., Cuenca, J. A., Klemencic, G. M. and Williams, O. A. 2021. Surface zeta potential and diamond growth on gallium oxide single crystal. Carbon 181, pp. 79-86. (10.1016/j.carbon.2021.04.100)
- Lynch, S. A. et al. 2021. Rydberg excitons in synthetic cuprous oxide (Cu2O). Physical Review Materials 5(8), article number: 86402. (10.1103/PhysRevMaterials.5.084602)
- Manifold, S. . A., Klemencic, G., Thomas, E. L., Mandal, S., Bland, H., Giblin, S. R. and Williams, O. A. 2021. Contact resistance of various metallisation schemes to superconducting boron doped diamond between 1.9 and 300 K. Carbon 179, pp. 13-19. (10.1016/j.carbon.2021.02.079)
- Guo, T. et al. 2021. Electrochemistry of nitrogen and boron bi-element incorporated diamond films. Carbon 178, pp. 19-25. (10.1016/j.carbon.2021.02.062)
- Klemencic, G. et al. 2021. Phase slips and metastability in granular boron-doped nanocrystalline diamond microbridges. Carbon 175, pp. 43-49. (10.1016/j.carbon.2020.12.042)
- Sedov, V. et al. 2021. CVD synthesis of multi-layered polycrystalline diamond films with reduced roughness using time-limited injections of N2 gas. Diamond and Related Materials 114, article number: 108333. (10.1016/j.diamond.2021.108333)
- Cuenca, J. A. et al. 2021. Thermal stress modelling of diamond on GaN/III-Nitride membranes. Carbon 174, pp. 647-661. (10.1016/j.carbon.2020.11.067)
- Bland, H. A., Centeleghe, I. A., Mandal, S., Thomas, E. L. H., Maillard, J. and Williams, O. A. 2021. Electropositive nanodiamond-coated quartz microfiber membranes for virus and dye filtration. ACS Applied Nano Materials 4(3), pp. 3252-3261. (10.1021/acsanm.1c00439)
- Mandal, S. 2021. Nucleation of diamond films on heterogeneous substrates: a review. RSC Advances 11(17), pp. 10159-10182. (10.1039/D1RA00397F)
- Sow, M. et al. 2020. High-throughput nitrogen-vacancy center imaging for nanodiamond photophysical characterization and pH nanosensing. Nanoscale 12(42), pp. 21821-21821. (10.1039/D0NR05931E)
- Smith, M. D. et al. 2020. GaN-on-diamond technology platform: bonding-free membrane manufacturing process. AIP Advances 10(3), article number: 35306. (10.1063/1.5129229)
- Cuenca, J. A., Mandal, S., Morgan, D. J., Snowball, M., Porch, A. and Williams, O. A. 2020. Dielectric spectroscopy of hydrogen treated hexagonal boron nitride ceramics. ACS Applied Electronic Materials 2(5), pp. 1193-1202. (10.1021/acsaelm.9b00767)
- Mandal, S. et al. 2019. Thick, adherent diamond films on AlN with low thermal barrier resistance. ACS Applied Materials and Interfaces 11(43), pp. 40826-40834. (10.1021/acsami.9b13869)
- Ahmed, A., Gines, L., Mandal, S., Song, C., Williams, O. A., Sarmiento, M. N. and Cheng, C. 2019. Facile amine termination of nanodiamond particles and their surface reaction dynamics. ACS Omega 4(16), pp. 16715-16723. (10.1021/acsomega.9b00776)
- Bland, H. A. et al. 2019. Author correction: superconducting diamond on silicon nitride for device applications. Scientific Reports 9(1), pp. -., article number: 11012. (10.1038/s41598-019-46256-y)
- Salman, M., Klemencic, G. M., Mandal, S., Manifold, S., Mustafa, L., Williams, O. A. and Giblin, S. R. 2019. Quantitative analysis of the interaction between a dc SQUID and an integrated micromechanical doubly clamped cantilever. Journal of Applied Physics 125(22), article number: 224503. (10.1063/1.5090958)
- Mandal, S., Bland, H. A., Cuenca, J. A., Snowball, M. and Williams, O. A. 2019. Superconducting boron doped nanocrystalline diamond on boron nitride ceramics. Nanoscale 11(21), pp. 10266-10272. (10.1039/C9NR02729G)
- Klemencic, G. M., Fellows, J. M., Werrell, J. M., Mandal, S., Giblin, S. R., Smith, R. A. and Williams, O. A. 2019. Observation of a superconducting glass state in granular superconducting diamond. Scientific Reports 9, article number: 4578. (10.1038/s41598-019-40306-1)
- Bland, H. A. et al. 2019. Superconducting diamond on silicon nitride for device applications. Scientific Reports 9, article number: 2911. (10.1038/s41598-019-39707-z)
- Gines, L. et al. 2018. Production of metal-free diamond nanoparticles. ACS Omega 3(11), pp. 16099-16104. (10.1021/acsomega.8b02067)
- Lindner, S. et al. 2018. Strongly inhomogeneous distribution of spectral properties of silicon-vacancy color centers in nanodiamonds. New Journal of Physics 20(11), article number: 115002. (10.1088/1367-2630/aae93f)
- Abdou, A. et al. 2018. Air-clad suspended nanocrystalline diamond ridge waveguides. Optics Express 26(11), article number: 13883. (10.1364/OE.26.013883)
- Mandal, S., Thomas, E. L. H., Gines, L., Morgan, D., Green, J., Brousseau, E. B. and Williams, O. A. 2018. Redox agent enhanced chemical mechanical polishing of thin film diamond. Carbon 130, pp. 25-30. (10.1016/j.carbon.2017.12.077)
- Yu, S. et al. 2018. Battery-like supercapacitors from vertically aligned carbon nanofiber coated diamond: design and demonstrator. Advanced Energy Materials 8(12), article number: 1702947. (10.1002/aenm.201702947)
- Frangeskou, A. C., Rahman, A. A. T. M., Gines, L., Mandal, S., Williams, O. A., Barker, P. F. and Morley, G. 2018. Pure nanodiamonds for levitated optomechanics in vacuum. New Journal of Physics 20, article number: 43016. (10.1088/1367-2630/aab700)
- Thomas, E., Gines, L., Mandal, S., Klemencic, G. and Williams, O. A. 2018. A simple, space constrained NIRIM type reactor for chemical vapour deposition of diamond. AIP Advances 8, article number: 35325. (10.1063/1.5009182)
- Braunbeck, G., Mandal, S., Touge, M., Williams, O. A. and Reinhard, F. 2018. Effect of ultraprecision polishing techniques on coherence times of shallow nitrogen-vacancy centers in diamond. Diamond and Related Materials 85, pp. 18-22. (10.1016/j.diamond.2018.03.026)
- Cuenca, J. A. et al. 2018. Microwave permittivity of trace sp2 carbon impurities in sub-micron diamond powders. ACS Omega 3(2), pp. 2183-2192. (10.1021/acsomega.7b02000)
- Klemencic, G. M., Mandal, S., Werrell, J. M., Giblin, S. R. and Williams, O. A. 2017. Superconductivity in planarised nanocrystalline diamond films. Science and Technology of Advanced Materials 18(1) (10.1080/14686996.2017.1286223)
- Mandal, S. et al. 2017. Surface zeta potential and diamond seeding on gallium nitride films. ACS Omega 2(10), pp. 7275-7280. (10.1021/acsomega.7b01069)
- Thomas, E. et al. 2017. Spectroscopic ellipsometry of nanocrystalline diamond film growth. ACS Omega 2(10), pp. 6715-6727. (10.1021/acsomega.7b00866)
- Klemencic, G. M., Fellows, J. M., Werrell, J. M., Mandal, S., Giblin, S. R., Smith, R. A. and Williams, O. A. 2017. Fluctuation spectroscopy as a probe of granular superconducting diamond films. Physical Review Materials 1(4), article number: 44801. (10.1103/PhysRevMaterials.1.044801)
- Gines, L., Mandal, S., Ahmed, A., Cheng, C., Sow, M. and Williams, O. A. 2017. Positive zeta potential of nanodiamonds. Nanoscale 9(34), pp. 12549-12555. (10.1039/C7NR03200E)
- Ayres, Z. J., Newland, J. C., Newton, M. E., Mandal, S., Williams, O. A. and Macpherson, J. V. 2017. Impact of chemical vapour deposition plasma inhomogeneity on the spatial variation of sp 2 carbon in boron doped diamond electrodes. Carbon 121, pp. 434-442. (10.1016/j.carbon.2017.06.008)
- Titova, N. et al. 2017. Slow electron-phonon cooling in superconducting diamond films. IEEE Transactions on Applied Superconductivity 27(4), article number: 7501104. (10.1109/TASC.2016.2638199)
- Yu, S. et al. 2017. Battery-like supercapacitors from diamond networks and water-soluble redox electrolytes. Journal of Materials Chemistry A 5(4), pp. 1778-1785. (10.1039/C6TA08607A)
- Werrell, J. et al. 2017. Effect of slurry composition on the chemical mechanical polishing of thin diamond films. Science and Technology of Advanced Materials 18(1), pp. 654-663. (10.1080/14686996.2017.1366815.)
- Ahmed, A. -., Mandal, S., Gines, L., Williams, O. A. and Cheng, C. 2016. Low temperature catalytic reactivity of nanodiamond in molecular hydrogen. Carbon 110, pp. 438-442. (10.1016/j.carbon.2016.09.019)
- Mandal, S., Thomas, E. L. H., Jenny, T. A. and Williams, O. A. 2016. Chemical nucleation of diamond films. ACS Applied Materials and Interfaces 8(39), pp. 26220-26225. (10.1021/acsami.6b08286)
- Cuenca, J. A., Thomas, E. L. H., Mandal, S., Williams, O. A. and Porch, A. 2015. Investigating the broadband microwave absorption of nanodiamond impurities. IEEE Transactions on Microwave Theory and Techniques 63(12), pp. 4110-4118. (10.1109/TMTT.2015.2495156)
- Yu, S. et al. 2015. Electrochemical supercapacitors from diamond. Journal of Physical Chemistry C 119(33), pp. 18918-18926. (10.1021/acs.jpcc.5b04719)
- Cuenca, J. A., Thomas, E. L. H., Mandal, S., Williams, O. A. and Porch, A. 2015. Microwave determination of sp2 carbon fraction in nanodiamond powders. Carbon 81, pp. 174-178. (10.1016/j.carbon.2014.09.046)
- Bautze, T., Mandal, S., Williams, O. A., Rodière, P., Meunier, T. and Bäuerle, C. 2014. Superconducting nano-mechanical diamond resonators. Carbon 72, pp. 100-105. (10.1016/j.carbon.2014.01.060)
- Thomas, E. L. H., Mandal, S., Brousseau, E. B. J. P. and Williams, O. A. 2014. Silica based polishing of {100} and {111} single crystal diamond. Science and Technology of Advanced Materials 15(3), pp. 1-7., article number: 35013. (10.1088/1468-6996/15/3/035013)
- Thomas, E. L. H., Nelson, G. W., Mandal, S., Foord, J. S. and Williams, O. A. 2014. Chemical mechanical polishing of thin film diamond. Carbon 68, pp. 473-479. (10.1016/j.carbon.2013.11.023)
- Szirmai, P. et al. 2013. Observation of conduction electron spin resonance in boron-doped diamond. Physical Review B 87(19), article number: 195132. (10.1103/PhysRevB.87.195132)
- Szirmai, P., Pichler, T., Williams, O. A., Mandal, S., Bäuerle, C. and Simon, F. 2012. A detailed analysis of the Raman spectra in superconducting boron doped nanocrystalline diamond. Physica Status Solidi B Basic Research 249(12), pp. 2656-2659. (10.1002/pssb.201200461)
- Mandal, S. et al. 2011. The Diamond Superconducting Quantum Interference Device. ACS Nano 5(9), pp. 7144-7148. (10.1021/nn2018396)
- Mandal, S. 2011. A comparative study of angle dependent magnetoresistance in [001] and [110] La2/3Sr1/3MnO3. Journal of Superconductivity and Novel Magnetism 24(5), pp. 1501-1504. (10.1007/s10948-010-0882-x)
- Mandal, S., Bautze, T., Blinder, R., Meunier, T., Saminadayar, L. and Bauerle, C. 2011. Efficient radio frequency filters for space constrained cryogenic setups. Review of Scientific Instruments 82(2), article number: 24704. (10.1063/1.3543736)
- Mandal, S. et al. 2010. Nanostructures made from superconducting boron-doped diamond. Nanotechnology 21(19), article number: 195303. (10.1088/0957-4484/21/19/195303)
- Mandal, S. et al. 2010. Detailed study of superconductivity in nanostructured nanocrystalline boron doped diamond thin films. Physica Status Solidi a Applications and Materials Science 207(9), pp. 2017-2022. (10.1002/pssa.201000008)
- Mandal, S. 2010. Magnetoresistance studies of La2/3Sr1/3MnO3-YBa2Cu3O7-La2/3Sr1/3MnO3 trilayers with ferromagnetic coupling along the nodal direction of YBa2Cu3O7. Physical Review B: Condensed Matter and Materials Physics 81(1), article number: 14515. (10.1103/PhysRevB.81.014515)
- Mandal, S. and Budhani, R. C. 2008. Magnetization depinning transition, anisotropic magnetoresistance and inplane anisotropy in two polytypes of La2/3Sr1/3MnO3 epitaxial films. Journal of Magnetism and Magnetic Materials 320(23), pp. 3323-3333. (10.1016/j.jmmm.2008.07.002)
- Mandal, S., Budhani, R., He, J. and Zhu, Y. 2008. Diverging giant magnetoresistance in ferromagnet-superconductor-ferromagnet trilayers. Physical Review B: Condensed Matter and Materials Physics 78(9), article number: 94502. (10.1103/PhysRevB.78.094502)
- Li, P., Mandal, S., Budhani, R. and Greene, R. 2007. Correlation between incoherent phase fluctuations and disorder in Y1−xPrxBa2Cu3O7−δ epitaxial films from Nernst effect measurements. Physical Review B: Condensed Matter and Materials Physics 75(18), article number: 184509. (10.1103/PhysRevB.75.184509)
- Mandal, S., Bose, S. K., Sharma, R., Budhani, R. C., Padhan, P. and Prellier, W. 2006. Growth of [110] La2/3Sr1/3MnO3–YBa2Cu3O7 heterostructures. Applied Physics Letters 89(18), article number: 182508. (10.1063/1.2374692)
- Budhani, R. C., Pant, P., Rakshit, R. K., Senapati, K., Mandal, S., Pandey, N. K. and Kumar, J. 2005. Magnetotransport in epitaxial films of the degenerate semiconductor Zn1−xCoxO. Journal of Physics: Condensed Matter 17(1), article number: 75. (10.1088/0953-8984/17/1/008)
Book sections
- Mandal, S., Thomas, E. L. H., Werrell, J. M., Klemencic, G. M., Ash, J., Brousseau, E. B. and Williams, O. A. 2019. Chemical mechanical polishing of nanocrystalline diamond. In: Yang, N. ed. Novel Aspects of Diamond: From Growth to Applications., Vol. 121. Topics in Applied Physics Chem: Springer, pp. 53-89., (10.1007/978-3-030-12469-4_3)
- Mandal, S., Bautze, T. and Bäuerle, C. 2014. Superconductivity in nanostructured boron-doped diamond and its application to device fabrication. In: Williams, O. A. ed. Nanodiamond. Royal Society of Chemistry, pp. 385-410., (10.1039/9781849737616-00385)
Conferences
- Cuenca, J. A. et al. 2023. Microwave conductivity of boron-doped nanodiamond particles. Presented at: 2022 Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, 29 November - 02 December 20222022 Asia-Pacific Microwave Conference (APMC). IEEE, (10.23919/APMC55665.2022.9999762)
- Cuenca, J. A., Leigh, W., Thomas, E. L., Mandal, S. and Williams, O. A. 2023. Modelling deposition uniformity in microwave plasma cvd diamond over 2" Si wafers. Presented at: 2022 Asia-Pacific Microwave Conference (APMC), Yokohama, Japan, 29 November - 02 December 20222022 Asia-Pacific Microwave Conference (APMC). IEEE, (10.23919/APMC55665.2022.9999754)
- Panduranga, P. et al. 2019. Hybrid diamond/silicon suspended integrated photonic platform using SF6 isotropic etching. Presented at: 2nd IEEE British and Irish Conference on Optics and Photonics (BICOP 2019), London, England, 11-13 December 20192019 IEEE 2nd British and Irish Conference on Optics and Photonics (BICOP). IEEE pp. 1-4., (10.1109/BICOP48819.2019.9059586)
- Cuenca, J., Thomas, E., Williams, O. A., Mandal, S. and Porch, A. 2014. Broadband microwave measurements of nanodiamond. Presented at: Microwave Conference (APMC), 2014 Asia-Pacific, Sendai, Japan, 4-7 Nov 2014Microwave Conference (APMC), 2014 Asia-Pacific. pp. 1-3.
Biography
- Research Associate: Cardiff University, Cardiff, UK, Apr' 13 - till date
- Postdoctoral Research Fellow: Institut Neel, Grenoble, France, Nov'08 - Jun'12
- PhD Student: IIT Kanpur, Kanpur, India, Jul'03 - Mar'09 (Submission Sep'08, Defended Mar'09)
Honours and awards
- Diamond and Carbon materials 2018 Early Career Research Award (2018)