Ranveer Singh

For More Information

• Micro-Nano-Mechanical Systems Lab
• Google Scholar

Education

• Ph.D. Physical Sciences, Institute of Physics, Bhubaneswar, India 2019
• M.Phil., Utkal University, Bhubaneswar, India 2014
• M.Sc. Physics, University of Rajasthan, Jaipur, India 2012
• B.Sc., University of Rajasthan, Jaipur, India 2010

Academic Positions

• Cleanroom Engineer, Micro-Nano Mechanical Systems Cleanroom Laboratory, Department of Mechanical Science and Engineering, July 2024 - Present
• Research Associate, Department of Physics, University of Wisconsin-Madison, Madison, Nov 2023 - June 2024
• Research Associate, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, June 2022 - October 2023
• Brain-Pool fellow (Post-doc), Ajou University, South Korea, Sep 2019 - May 2022

Research Interests

• Fabrication of 2D materials, Van der walls heterostructures, and metasurfaces
• Growth of ultrawide bandgap (UWBG) semiconductor materials
• Development of large lattice-mismatched semiconductor heterostructures
• Fabrication and transfer of nanomembranes (NMs) of III-V groups
• Charge transport in semiconductor heterostructures and Probing nanoscale electrical properties using scanning probe microscopy
• Exploration of ultrafast electronic and photonic devices
• Flexible optoelectronic devices, Solar cells, and Photodetectors

Keywords

• Nano Micro and Meso Technology
• Nanomechanics & Nanomanufacturing

Selected Articles in Journals

• H. N. Abbasi, J. Zhou, D. Wang, P. Wang, Y. Lu, J. Gong, D. Liu, Y. Liu, R. Singh, Z. Mi, Z. Ma, "Si/AlN pn heterojunction interfaced with ultrathin SiO2" arXiv preprint arXiv:2407.17360
• J. Gong, D. Kim, H. Jang, F. Alema, Q. Wang, J. Zhou, Y. Li, T. K. Ng, S. Qiu, Y. Liu, M. Sheikhi, Y. Lu, Ranveer Singh, X. Su, H. Abbasi, Q. Lin, S. Xie, K. Chabak, G. Jessen, C. Cheung, V. Gambin, S. S Pasayat, A. Osinsky, B. S. Ooi, C. Gupta, Z. Ma “Monocrystalline Si/Ga2O3 p-n heterojunction diodes fabricated via grafting” Appl. Phys. Lett. 124 (26), 262101 (2024)
• J. Gong, D. Kim, H. Jang, F. Alema, Q. Wang, T. K. Ng, S. Qiu, J. Zhou, X. Su, Q. Lin, Ranveer Singh, H. Abbasi, K. Chabak, G. Jessen, C. Cheung, V. Gambin, S. S Pasayat, A. Osinsky, S. Ooi, C. Gupta, Z. Ma “Monocrystalline Si/-Ga2O3 p-n heterojunction diodes fabricated via grafting” arXiv preprint arXiv:2305.19138
• S. Qiu, J. Gong, J. Zhou, T. H. Ng, Ranveer Singh, M. Sheikhi, B. S. Ooi, and Z. Ma “Interfacial band parameters of ultrathin ALD-ZrO2 on Ga-polar GaN through XPS measurements” AIP Advances 13, 055110 (2023)
• J. Gong, J. Zhou, P. Wang, T.‐H. Kim, K. Lu, S. Min, Ranveer Singh, M. Sheikhi, H. N. Abbasi, D. Vincent, D. Wang, N. Campbell, T. Grotjohn, M. Rzchowski, J. Kim, E. T. Yu, Z. Mi, and Z. Ma “Synthesis and Characteristics of Transferrable Single‐Crystalline AlN Nanomembranes” Advanced Electronic Materials 9, 2201309 (2023).
• Ranveer Singh, M. Vallet, V. Singh, S. K. Srivastava, A. Claverie, and T. Som “Role of Cu-doping in CdTe thin films: Experiments and simulations” Surface and Interface Analysis 1-11 (2022)
• Ranveer Singh, Q. A. Sial, U. Kim, S. Nah, and H. Seo “Ultrafast hot-electron injection at HfN-metal oxide heterojunctions: Role of barrier height” Materials Science in Semiconductor Processing 152, 107117 (2022)
• P. Kumar, V. Chauhan, Ranveer Singh, and P. C. Pandey “Lithium activated enhancement in UV-photo response of europium doped ZnO thin film” Materials Chemistry and Physics 291, 126661 (2022)
• Ranveer Singh, M. Kumar, U. Kim, and H. Seo “Self-Powered and High-Performance Alternating Current Photodetectors to enhance Broadband Photodetection” Advanced Electronic Materials 8, 2200392 (2022)
• N. Basu, A. Dutta, Ranveer Singh, M. Bayazeed, A. S. Parmar, T. Som, J. Lahiri “Substarte roughness and crystal orientation-controlled growth of ultra-thin BN thin films on Cu foils” Applied Physics A 128, 1-10 (2022)
• Ranveer Singh, H. Kang, H. Shin, Ji-Yong Park, and H. Seo “Highly transparent conducting Two-Dimensional electron gas channel in ultrathin heterostructures for flexible optoelectronic device applications” Applied Surface Science 580, 152266 (2022)
• Ranveer Singh, Q. A. Sial, S. Han, S. Nah, Ji-Yong Park, and H. Seo “Nanoscale Visualization of Hot Carrier Generation and Transfer at Non-noble Metal and Oxide Interface” Journal of Materials Science & Technology 98, 151-159 (2022)
• L. T. Duy, H. Kang, H. Shin, S. Han, Ranveer Singh, and H. Seo “Multifunctional Nanohybrid of Alumina and Indium Oxide Prepared Using the Atomic Layer Deposition Technique” ACS Appl. Mater. & Inter. 13, 59115-59125 (2021)
• S. S. Kalanur, Ranveer Singh, and H. Seo “Enhanced Solar Water Splitting of an Ideally Doped and Work Function Tuned {002} Oriented One-dimensional WO3 with Nanoscale Surface Charge Mapping insights” Applied Catalysis B: Environmental 295, 120269 (2021).
• Q. A. Sial, Ranveer Singh, L. T. Duy, S. Iqbal, I. Yoo, S. S. Kalanur, and Hyungtak Seo “Nitrogen-Doped Graphene Quantum Dot Anchored 1-D WO3 for Enhanced Solar Water Splitting: A Nano Surface Imaging Evidence of Charge Separation and Accumulation” International Journal of Hydrogen Energy 46, 32546-32558 (2021)
• S. Y. Lee, I. H. Yoo, Ranveer Singh, Y. J. Lee, S. S. Kalanur, and H. Seo “Enhanced Photocatalytic Properties of Band Structure Engineered Pd/TiO2 via Sequential Doping” Applied Surface Science 570, 151255 (2021)
• H. Kang, M. Ko, H. Choi, W. Lee, Ranveer Singh, M. Kumar, and H. Seo “Surface hydrogeneration of vanadium dioxide nanobeam to manipulate insulator-to-metal transition using hydrogen plasma” Journal of Asian Ceramic Societies 9, 1310-1319 (2021)
• Ranveer Singh, M. Kumar, S. Iqbal, H. Kang, U. Kim, Ji-Yong Park, and H. Seo “Electric Field-Induced Area Scalability towards the Multilevel Resistive Switching” Advanced Materials Interface 8, 2100664 (2021)
• D. Hasina, M. Kumar, Ranveer Singh, S. A. Mollick, A. Mitra, S. K. Srivastava, M. A. Luong, and T. Som “Ion Beam-Mediated Defect Engineering in TiOx Thin Films for Controlled Resistive Switching Property and Application” ACS Applied Electronic Materials 3, 3804-3814 (2021)
• Ranveer Singh, H. Shin, S. Nah, Ji-Yong Park, and H. Seo “Femto-second and Nanoscale Hot Carrier Dynamics in ZnO/Al2O3/Ag-NWs/FTO Heterojunction” J. Alloys & Comp. 872, 159657 (2021)
• Q. A. Sial, L. T. Duy, Ranveer Singh, S. Iqbal, R. Yeasmin, Y.-J. Lee, S. S. Kalanur, and H. Seo “A multifunctional TiN/Ni electrode for wearable supercapacitor and sensor with an insight into charge storage mechanism” Applied Surface Science 555, 149718 (2021)
• S. Iqbal, L. T. Duy, H. Kang, Ranveer Singh, M. Kumar, J. Park, and Hyungtak Seo “Femtojoule‐Power‐Consuming Synaptic Memtransistor Based on Mott Transition of Multiphasic Vanadium Oxides” Advanced Functional Materials 2102567 (2021)
• S. Iqbal, M. Kumar, Ranveer Singh, Q. A. Sial, and H. Seo “Substrate-morphology driven tunable nanoscale artificial synapse” Journal of Asian Ceramic Societies 9, 1137-1146 (2021)
• N. Keswani, R. J. Lopes, Y. Nakajima, Ranveer Singh, N. Chauhan, T. Som, D. S. Kumar, A. R. Pereira, and P. Das “Controlled creation and annihilation of isolated robust emergent magnetic monopole like charged vertices in square artifcial spin ice” Scientific Reports 11, 13593 (2021)
• Ranveer Singh, R. Sivakumar, S. K. Srivastava, and T. Som “Carrier selective MoOx/Si heterojunctions: Role of thickness” Applied Surface Science 564, 150316 (2021)
• Ranveer Singh, A. Dutta, N. Basu, J. Lahiri, and T. Som “Improved photovoltaic performance of CdTe solar cell with hole-blocking layer: Nanoscale imaging of barrier height at the interface” Solar Energy 215, 1-11 (2021)
• Ranveer Singh, M. Kumar, S. Iqbal, H. Kang, Ji-Yong Park, and H. Seo “Highly Transparent Solid-State Artificial Synapse based on Oxide Memristor” Applied Surface Science 536, 147738 (2021)
• Rajnarayan De, S. Maidul Haque, Ranveer Singh, C. B. Basak, S. Jena, J. S. Misal, D. D. Shinde, T. Som, and D. Rao “Morphology Dependent Optical and Wetting Behavior of GLAD- PTFE Thin Films” Journal of Coatings Technology and Research 18, 173-182 (2021)
• Y.-A. Lee, L. T. Duy, S. Han, H. An, J. Park, Ranveer Singh, H. Y. Kim, and H. Seo “Confined interfacial alloying of multilayered Pd-Ni nanocatalyst for widening hydrogen detection capacity” Sensors and Actuators B: Chemical 330, 129378 (2020)
• N. Keswani, Ranveer Singh, Y. Nakajima, T. Som, and P. Das, “Accessing low-energy magnetic microstates in broken-symmetry isolated square artificial spin ice vertices in magnetic field” Phys. Rev. B 102, 224436 (2020)
• B. Das, A. Das, A. Ghosh, Ranveer Singh, S. Maity, T. Som, and S. Datta “Electrically probing differently oriented 1-D nanostructures via C-AFM” AIP Conference Proceedings 2265, 030715 (2020)
• M. Kumar, Ranveer Singh, H. Kang, S. Kim, H. Seo “Brain-like spatiotemporal information processing with nanosized second-order synaptic emulators;“solid-state memory visualizer” Nano Energy 76, 105014 (2020)
• M. Saini, Ranveer Singh and T. Som “Photoresponse of highly oxygen deficient ZnO:Cu thin films” Solar Energy 207, 228-234 (2020)
• A. Singh, K. Senapati, Ranveer Singh, P. Rajput, T. Som, and P. K. Sahoo “Tuning field-emission characteristics of ZnO nanorods through defect engineering via O+ ion irradiation” Journal of Applied Physics 128, 054304 (2020)
• Ranveer Singh and T. Som “Direct evidence of band-bending at grain boundaries of ZnO:SnO2 films: Local probe microscopic studies” Solar Energy 208, 275-281 (2020)
• M. Kumar, Ranveer Singh, H. Kang, S. Kim, H. Seo “An artificial piezotronic synapse for tactile perception” Nano Energy 73, 104756 (2020)
• Ranveer Singh, R. Sivakumar, S. K. Srivastava, T. Som “Growth angle-dependent tunable work function and optoelectronic properties of MoOx thin films” Applied Surface Science 507, 144958 (2020)
• S. A. Mollick, Ranveer Singh, B. Satpati, S. Bhattacharyya, T. Som “Growth angle-dependent evolution of morphology and magnetic properties of Co films on highly ordered self-organized Ge substrates” Journal of Magnetism and Magnetic Materials 498, 166198 (2020)
• P. Maiti, Ranveer Singh, B. Sundaravel, A. Mitra, P. V Satyam “Tuning the structural, optical, local work function and field emission properties of molybdenum oxide thin films with oxygen partial pressures” Journal of Applied Physics 127, 025301 (2020)
• M. Saini, Ranveer Singh, K. P. Sooraj, T. Basu, A. Roy, B. Satpati, S. K. Srivastava, M. Ranjan, and T. Som “Cold Cathode Electron Emission with Ultralow Turn-on Field from Au-Nanoparticle-decorated Self-organized Si Nanofacets” Journal of Materials Chemistry C 8, 16882-16895 (2020).
• T. Basu, M. Blaskovic, S. Tripathy, F. Tian, Ranveer Singh, T. Som, S. Garaj, and J. A. van Kan “Local surface conductivity mapping of single-layer graphene subject to low energy argon bombardment: Energy loss mechanism and defect induction efficiency” Materials Letters 256, 126638 (2019)
• A. Dutta, Ranveer Singh, S. K. Srivastava, and T. Som “Tunable optoelectronic properties of radio frequency sputter-deposited Sb2Se3 thin films: Role of growth angle and thickness” Solar Energy 194, 716-723 (2019)
• Ranveer Singh, A. Dutta, P. Nandi, S. K. Srivastava, and T. Som “Influence of grain size on local work function and optoelectronic properties of n-ZTO/p-Si heterostructures” Applied Surface Science 493, 577-586 (2019)
• M. Kumar, D. Y. Park, Ranveer Singh, M. S. Jeong, T. Som, and J. Kim “Growth of Wafer Scale ReS2 with “Tunable” Geometry towards Electron Field Emission Application” ACS applied materials & interfaces 11, 35845-35852 (2019).
• Rajnarayan De, S. Maidul Haque, J. Misal, D. Shinde, C. Prathap, S. R. Polaki, Ranveer Singh, T. Som, and K. Divakar Rao, “Optical, Photocatalytic and wetting behavior of GLAD N2-TiO2 Films” Physica Status Solidi (a) 216, 1900021 (2019)
• J. Singh, K. Sahu, Ranveer Singh, T. Som, R. K. Kotnala, and S. Mohapatra “Thermal annealing induced strong photoluminescence enhancement in Ag- TiO2 plasmonic nanocomposite thin films” J. Alloy and Comp. 786, 750-757 (2019)
• P. Maiti, P. Guha, Ranveer Singh, J. K. Das, and P. V. Satyam “Optical Band Gap, Local Work Function and Field Emission Properties of MBE Grown β-MoO3 Nanoribbons” Applied Surface Science 476, 691-700 (2019)
• Ranveer Singh, S. A. Mollick, M. Saini, P. Guha, and T. Som “Experimental and simulation studies on temporal evolution of chemically etched Si surface: Tunable light trapping and cold cathode electron emission properties” Journal of Applied Physics 125, 164302 (2019)
• P. Maiti, P. Guha, H. Hussian, Ranveer Singh, C. Niklin, and P. V. Satyam “Microscopy and Spectroscopy Study of Nanostructural Phase Transformation from -MoO3 to Mo under UHV – MBE Conditions” Surface Science 682, 64-74 (2019)
• A. Masarrat, A. Bhogra, R. Meena, M. Bala, Ranveer Singh, V. Barwal, C.-Li Dong, Chi-Liang Chen, T. Som, A. Kumar, A N., and K. Asokan, “Effect of Fe ion implantation on the thermoelectric properties and electronic structures of CoSb3 thin films” RSC Advances 9, 36113-36122 (2019)
• Ranveer Singh, M. Kumar, M. Saini, B. Satpati, and T. Som “White light-driven photoresponse of TiO2 thin film: Influence of substrate texturing” Solar Energy 174, 231-239 (2018)
• M. Saini, Ranveer Singh, and T. Som “Broadband antireflection property of conformally grown zinc tin oxide thin films on nanorippled- and nanofacted-Si surfaces” Journal of Physics D: Applied Physics 51, 275305 (2018)
• Rajnarayan De, J. Misal, D. Shinde, S. R. Polaki, Ranveer Singh, T. Som, N. Sahoo, and D. Rao “A Fast and Facile Deposition of PTFE Based Superhydrophobic and Ultra Wideband Angle Insensitive Anti-reflection Coatings” Physica Status Solidi (RRL) – Rapid Research Letters 12, 1800041 (2018)
• S. A. Mollick, Ranveer Singh, M. Kumar, S. Bhattacharyya, and T. Som “Strong uniaxial magnetic anisotropy in Co films on highly ordered grating-like nanopatterned Ge surfaces”, Nanotechnology 29, 125302 (2018)
• P. Kumar, Ranveer Singh, and P. C. Pandey, “Enhanced Ultraviolet Photo-response in Dy doped ZnO Thin Film”, Journal of Applied Physics 123, 054502 (2018)
• M. Kumar, Ranveer Singh, and T. Som “Intrinsic inhomogeneous barrier height at the n-TiO2/p-Si hole-blocking junction” Applied Surface Science 428, 1006-1009 (2018)
• A. Singh, K Senapati, D. P. Dutta, Ranveer Singh, T. Som, S. Bhunia, D. Kanjilal, and P. K. Sahoo “Synthesis of p-n junction in ZnO nanorods by O+ ion implantation” Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 409, 143-146 (2017)
• Ranveer Singh, M. Kumar, M. Saini, A. Singh, B. Satpati, and T. Som “Growth of TiO2 thin films on chemically textured Si for solar cell applications as a hole-blocking and antireflection layer”, Applied Surface Science 418, 225-231 (2017)
• Rajnarayan De, S. Maidul Haque, S. Tripathi, K. Divakar Rao, Ranveer Singh, T. Som, and N. K. Sahoo “Temperature dependent optical characterization of Ni-TiO2 thin films as potential photocatalytic material” AIP Advances 7, 095115 (2017)
• P. Guha, A. Ghosh, R. Thapa, E M. Kumar, S. Kirishwaran, Ranveer Singh, and P. V. Satyam “Ag nanoparticles decorated molybdenum oxide structures: Growth, characterizations, DFT studies and their application for enhanced field emission” Nanotechnology 28, 425602 (2017)
• S. A. Mollick, M. Kumar, Ranveer Singh, B. Satpati, D. Ghose, and T. Som “Gold-decorated highly ordered self-organized grating-like nanostructures on Ge surface: Kelvin probe force microscopy and conductive atomic force microscopy studies”, Nanotechnology 27, 435302 (2016)
• M. Kumar, Ranveer Singh, S. Nandy, A. Ghosh, S. Rath, and T. Som “Tunable optoelectronic properties of pulsed dc sputter-deposited ZnO:Al thin films: Role of growth angle”, Journal of Applied Physics 120, 015302 (2016)

Refereed Conference Papers and Presentations

• ORAL: “Nanoscale Visualization of Hot Carrier Generation and Transfer at Non-noble Metal and Oxide Interface” International Union of Materials Research Societies - International Conference in Asia 2021 (IUMRS-ICA 2021)
• ORAL: Effect of Cu-doping on the different physical properties of polycrystalline CdTe for solar cell applications” International Conference on Efficient Solar Power Generation and Energy Harvesting (ESPGH-2019)-An Industry - Academia Meet, Noida (India)
• ORAL: “Thickness-dependent tunable optoelectronic properties of n-MoO3/p-Si heterojunction” 9th International Conference on Materials for Advanced Technologies (ICAMT-2017), Singapore
• ORAL: “Growth angle-dependent tunable structural, optical, and electrical properties of MoO3 thin films” International Conference on Advances in Biological Systems and Materials Science in NanoWorld (ABSMSNW-2017), Varanasi
• ORAL: “Thickness-dependent photoresponse in n-TiO2/p-Si heterostructure” 2nd International Conference on Solar Energy Photovoltaic (ICSEP), Bhubaneswar
• ORAL: An efficient hole-blocking property in BiFeO3 thin films grown by PLD” International Conference on Functional Oxides and Nanomaterials (ICFONM), Rajkot on November 11, 2016
• POSTER": "Femto-second and nanoscale hot carrier dynamics in silver nanowire-embedded ZnO thin film for hot carrier solar cells” The Materials Research Society of Korea Spring/Autumn Conference 2020, Jeju Phoenix Seopjikoji, Jeju Island (South Korea)
• POSTER: “Effect of annealing temperature on the microstructure, optical, and electrical properties of polycrystalline CdTe for solar cell applications” International Conference on Microscopy – EMSI 2018, Bhubaneswar (India)
• POSTER: “Influence of grain size on local work function and optoelectronic properties of n-ZTO / p-Si heterostructures” International Conference on Microscopy – EMSI 2018, Bhubaneswar (India)
• POSTER: “Influence of grain size on local work function and optoelectronic properties of n-ZTO / p-Si heterostructures” Annual Condensed Matter Physics Meeting, Bhubaneswar (India)
• POSTER: “Photoresponse study of Pulsed Laser Deposited ZnO:Cu thin films” 9nd International Conference on Materials for Advanced Technologies (ICAMT-2017), Singapore
• POSTER: "Growth of TiO2 thin films on chemically textured Si for solar cell applications as a hole-blocking and antireflection layer” Asian Consortium on Computational Materials Science (ACCMS) Theme Meeting on First Principle Analysis and Experiment: Role in Energy Research, Chennai

Conferences Organized or Chaired

• Member of International Advisory Board of the “2nd International Conference on Renewable Energy”

Professional Societies

• Member, Ion-beam Society of India
• Member, Electron Microscopy Society of India

Honors

• Brain Pool/Korean Research Fellowship (KRF), South Korea (2019)

Research Honors

• Fellowship for Graduate Students by the Department of Atomic Energy, India (2013)
• First place in ORAL Presentation, International conference on “Advanced in Biological System and Materials Science in NanoWorld” ABSMSNUW-2017 (2017)

Improvement Activities

• Attended a Six-session course on leadership Postdoctoral Training Course in “Scientific Leadership” organized by the University of Wisconsin-Madison, Madison (2024)
• 3-week workshop on “Centre for the Integration of Research, Teaching, and Learning-First Year Faculty Teaching Academy (CIRTAL-FYFTA) Summer 2023” organized by The University of Florida Center for Teaching Excellence
• One-day tutorials on “Facilities Day Open House Agenda” held at University of Wisconsin-Madison Campus, Madison, Wisconsin (2023)
• Three-day workshop on “AFM Electrical Measurement Course” held at Bruker, Santa Barbara, California (2022)