Photo of Saptarshi Das

Saptarshi Das

Associate Professor

Affiliation(s):

  • Engineering Science and Mechanics
  • Law, Policy, and Engineering
  • Electrical Engineering

N-333 Millennium Science Complex

sud70@psu.edu

814-863-2639

Personal or Departmental Website

Research Areas:

Advanced Materials and Devices; LPE Academic Working Group; LPE Research Working Group

 
 

 

Education

  • BE, Jadavpur University, 2007
  • Ph D, Micro and Nanoelectronics, Purdue University, 2013

Publications

Journal Articles

  • Akhil Dodda, Darsith Jayachandran, Andrew Pannone, Yikai Zheng, Abu M Abdullah, Shiva Subbulakhshmi Radhakrishnan, Nicholas Trainor, Joan M Redwing and Saptarshi Das, 2022, "A Bio-inspired and Low-power 2D Machine Vision with Adaptive Machine Learning and Forgetting", ACS Nano, 16, (12), pp. 20010–20020
  • Akhil Dodda, Darsith Jayachandran, Andrew Pannone, Nicholas Trainor, Sergei P Stepanoff, Megan A Steves, Shiva Subbulakhshmi Radhakrishnan, Saiphaneendra Bachu, Claudio W Ordonez, Jeffrey R Shallenberger, Joan M Redwing, Kenneth Knappenberger, Douglas E Wolfe and Saptarshi Das, 2022, "Active pixel sensor matrix based on monolayer MoS2 phototransistor array", Nature Materials, 21, pp. 1379–1387
  • Shiva Subbulakshmi Radhakrishnan, Akhil Dodda and Saptarshi Das, 2022, "An All-in-One Bio-inspired Neural Network", ACS Nano, 16, (12), pp. 20100–20115
  • Shiva Subbulakshmi Radhakrishnan, Shakya Chakrabarti, Dipanjan Sen, Mayukh Das, Thomas F Schranghamer, Amritanand Sebastian and Saptarshi Das, 2022, "A Sparse and Spike-Timing-Based Adaptive Photoencoder for Augmenting Machine Vision for Spiking Neural Networks", Advanced Materials, 34, (48), pp. 2202535
  • Darsith Jayachandran, Andrew Pannone, Mayukh Das, Thomas F Schranghamer, Dipanjan Sen and Saptarshi Das, 2022, "Insect-Inspired, Spike-Based, in-Sensor, and Night-Time Collision Detector Based on Atomically Thin and Light-Sensitive Memtransistors", ACS Nano
  • Shakya Chakrabarti, Akshay Wali, Harikrishnan Ravichandran, Shamik Kundu, Thomas F Schranghamer, Kanad Basu and Saptarshi Das, 2022, "Logic Locking of Integrated Circuits Enabled by Nanoscale MoS2-Based Memtransistors", ACS Applied Nano Materials, 5, (10), pp. 14447-14455
  • Amritanand Sebastian, Rahul Pendurthi, Azimkhan Kozhakhmetov, Nicholas Trainor, Joshua A Robinson, Joan M Redwing and Saptarshi Das, 2022, "Two-dimensional materials-based probabilistic synapses and reconfigurable neurons for measuring inference uncertainty using Bayesian neural networks", Nature Communications, 13, pp. 6139
  • Sarbashis Das and Saptarshi Das, 2022, "Digital Keying Enabled by Reconfigurable 2D Modulators", Advanced Materials, 34, (43), pp. 2203753
  • Yikai Zheng, Harikrishnan Ravichandran, Thomas F Schranghamer, Nicholas Trainor, Joan M Redwing and Saptarshi Das, 2022, "Hardware Acceleration of Bayesian Network based on Two-dimensional Memtransistors", Nature Communications, 13, pp. 5578
  • Yu Lei, Tianyi Zhang, Yu-Chuan Lin, Tomotaroh Granzier-Nakajima, George Bepete, Dorota A Kowalczyk, Zhong Lin, Da Zhou, Thomas F Schranghamer, Akhil Dodda, Amritanand Sebastian, Yifeng Chen, Yuanyue Liu, Geoffrey Pourtois, Thomas J Kempa, Bruno Schuler, Mark T Edmonds, Su Ying Quek, Ursula Wurstbauer, Stephen M Wu, Nicholas R Glavin, Saptarshi Das, Saroj P Das, Joan M Redwing, Joshua A Robinson and Mauricio Terrones, 2022, "Graphene and Beyond: Recent Advances in Two-Dimensional Materials Synthesis, Properties, and Devices", ACS Nanoscience Au, 2, (6), pp. 450–485
  • Rahul Pendurthi, Darsith Jayachandran, Azimkhan Kozhakhmetov, Nicholas Trainor, Joshua A Robinson, Joan M Redwing and Saptarshi Das, 2022, "Heterogeneous Integration of Atomically Thin Semiconductors for Non-von Neumann CMOS", Small, 18, (33), pp. 2202590
  • Akhil Dodda, Nicholas Trainor, Joan M Redwing and Saptarshi Das, 2022, "All-in-one, bio-inspired, and low-power crypto engines for near-sensor security based on two-dimensional memtransistors", Nature Communications, 13, pp. 3587
  • Drake Austin, Paige Miesle, Deanna Sessions, Michael Motala, David C Moore, Griffin Beyer, Adam Miesle, Andrew Sarangan, Amritanand Sebastian, Saptarshi Das, Anand B Puthirath, Xiang Zhang, Jordan Hachtel, Pulickel M Ajayan, Tyson Back, Peter R Stevenson, Michael Brothers, Steve S Kim, Philip Buskohl, Rahul Rao, Christopher Muratore and Nicholas R Glavin, 2022, "High Throughput Data-Driven Design of Laser-Crystallized 2D MoS2 Chemical Sensors: A Demonstration for NO2 Detection", ACS Applied Nano Materials, 5, (5), pp. 7549–7561
  • Suyash Rai, Vijay K Singh, Rahul Pendurthi, Joseph R Nasr, Saptarshi Das and Aanchal Srivastava, 2022, "Unveiling the electrical and photo-physical properties of intrinsic n-type 2D WSe2 for high performance field-effect transistors", Journal of Applied Physics, 131, (9), pp. 094301
  • Amritanand Sebastian, Sarbashis Das and Saptarshi Das, 2022, "An Annealing Accelerator for Ising Spin Systems Based on In-Memory Complementary 2D FETs", Advanced Materials, 34, (4), pp. 2107076
  • Ana Laura Elías and Saptarshi Das, 2022, "Leaving defects out of 2D molybdenum disulfide", Nature Electronics, 5, (1), pp. 19-20
  • Aaryan Oberoi, Akhil Dodda, He Liu, Mauricio Terrones and Saptarshi Das, 2021, "Secure Electronics Enabled by Atomically Thin and Photosensitive Two-Dimensional Memtransistors Authors Aarya", ACS Nano, 15, (12), pp. 19815–19827
  • Akshay Wali, Harikrishnan Ravichandran and Saptarshi Das, 2021, "A Machine Learning Attack Resilient True Random Number Generator Based on Stochastic Programming of Atomically Thin Transistors", ACS Nano, 15, (11), pp. 17804–17812
  • Saptarshi Das, Amritanand Sebastian, Eric Pop, Connor J McClellan, Aaron D Franklin, Tibor Grasser, Theresia Knobloch, Yury Illarionov, Ashish V Penumatcha, Joerg Appenzeller, Zhihong Chen, Wenjuan Zhu, Inge Asselberghs, Lain-Jong Li, Uygar E Avci, Navakanta Bhat, Thomas D Anthopoulos and Rajendra Singh, 2021, "Transistors based on two-dimensional materials for future integrated circuits", Nature Electronics, 4, (11), pp. 786-799
  • Azimkhan Kozhakhmetov, Samuel Stolz, Anne Marie Z Tan, Rahul Pendurthi, Saiphaneendra Bachu, Furkan T Turker, Nasim Alem, Jessica Kachian, Saptarshi Das, Richard G Hennig, Oliver Gröning, Bruno Schuler and Joshua A Robinson, 2021, "Controllable p-Type Doping of 2D WSe2 via Vanadium Substitution", Advanced Functional Materials, 31, (42), pp. 2105252
  • Thomas Schranghamer, madan Sharma, Rajendra Singh and Saptarshi Das, 2021, "Review and comparison of layer transfer methods for two-dimensional materials for emerging applications.", Chemical Society Reviews, 50, (19), pp. 11032-11054
  • Akhil Dodda and Saptarshi Das, 2021, "Demonstration of Stochastic Resonance, Population Coding, and Population Voting Using Artificial MoS2 Based Synapses", ACS Nano, 15, (10), pp. 16172–16182
  • Akhil Dodda, Shiva Subbulakshmi Radhakrishnan, Thomas Schranghamer, Drew E Buzzell, Drew Buzzell, Parijat Sengupta and Saptarshi Das, 2021, "Graphene-based physically unclonable functions that are reconfigurable and resilient to machine learning attacks", Nature Electronics, 4, (5), pp. 364-374
  • Shiva Subbulakshmi Radhakrishnan, Amritanand Sebastian, Aaryan Oberoi, Sarbashis Das and Saptarshi Das, 2021, "A Biomimetic Neural Encoder for Spiking Neural Network", Nature Communications, 12, (2143)
  • Akshay Wali, Shamik Kundu, Andrew J Arnold, Guangwei Zhao Choudhury, Kanad Basu and Saptarshi Das, 2021, "Satisfiability Attack-Resistant Camouflaged Two-Dimensional Heterostructure Devices", ACS Nano, 15, (2), pp. 3453-3467
  • Mikhail Chubarov, Tanushree H Choudhury, Danielle R Hickey, Saiphaneendra Bachu, Tianyi Zhang, Amritanand Sebastian, Anushka Bansal, Haoyue Zhu, Nicholas Trainor, Saptarshi Das, Mauricio Terrones, Nasim Alem and Joan M Redwing, 2021, "Wafer-Scale Epitaxial Growth of Unidirectional WS2 Monolayers on Sapphire", ACS Nano, 15, (2), pp. 2532–2541
  • Amritanand Sebastian, Rahul Pendurthi, Tanushree H Choudhury, Joan M Redwing and Saptarshi Das, 2021, "Benchmarking MoS2 and WS2 Field Effect Transistors", Nature Communications, 12, (693)
  • He Liu, Daniel Grasseschi, Akhil Dodda, Kazunori Fujisawa, David H Olson, Ethan Kahn, Fu Zhang, Tianyi Zhang, Yu Lei, Ricardo Braga Nogueira Branco, Ana Laura Elías, Rodolfo Cruz Silva, Yin-Ting Yeh, Camila M Maroneze, Leandro Seixas, Patrick E Hopkins, Saptarshi Das, Christiano JS de Matos and Mauricio Terrones, 2020, "Spontaneous chemical functionalization via coordination of Au single atoms on monolayer MoS2", Science Advances, 6, (49), pp. eabc9308
  • Fu Zhang, Boyang Zheng, Amritanand Sebastian, David H Olson, Mingzu Liu, Kazunori Fujisawa, Yen Thi Hai Pham, Valery Ortiz Jimenez, Vijaysankar Kalappattil, Leixin Miao, Tianyi Zhang, Rahul Pendurthi, Yu Lei, Ana Laura Elías, Yuanxi Wang, Nasim Alem, Patrick E Hopkins, Saptarshi Das, Vincent H Crespi, Manh-Huong Phan and Humberto Terrones Maldonado, 2020, "Monolayer Vanadium-Doped Tungsten Disulfide: A Room-Temperature Dilute Magnetic Semiconductor", Advanced Science, 7, pp. 2001174
  • Niharika Thakuria, Daniel S Schulman, Saptarshi Das and Sumeet K Gupta, 2020, "2D Strain FET (2D-SFET)-Based SRAMs—Part II: Back Voltage-Enabled Designs", IEEE Transactions on Electron Devices, 67, (11), pp. 4875-4883
  • Niharika Thakuria, Daniel S Schulman, Saptarshi Das and Sumeet K Gupta, 2020, "2D Strain FET (2D-SFET)-Based SRAMs—Part I: Back Voltage-Enabled Designs", IEEE Transactions on Electron Devices, 67, (11), pp. 4866-4874
  • Azimkhan Kozhakhmetov, Bruno Schuler, Anne Marie Z Tan, Katherine A Cochrane, Joseph R Nasr, Hesham El-Sherif, Anushka Bansal, Alex Vera, Vincent Bojan, Joan M Redwing, Nabil Bassim, Saptarshi Das, Richard G Hennig, Alexander Weber-Bargioni and Joshua A Robinson, 2020, "Scalable Substitutional Re-Doping and its Impact on the Optical and Electronic Properties of Tungsten Diselenide", Advanced Materials, 32, (50), pp. 2005159
  • Joseph R Nasr, Nicholas Simonson, Aaryan Oberoi, Mark W Horn, Joshua A Robinson and Saptarshi Das, 2020, "Low-Power and Ultra-Thin MoS2 Photodetectors on Glass", ACS Nano, 14, (11), pp. 15440-15449
  • Andrew J Arnold, Daniel S Schulman and Saptarshi Das, 2020, "Thickness Trends of Electron and Hole Conduction and Contact Carrier Injection in Surface Charge Transfer Doped 2D Field Effect Transistors", ACS Nano, 14, (10), pp. 13557–13568
  • Thomas Schranghamer, Aaryan Oberoi and Saptarshi Das, 2020, "Graphene Memristive Synapses for High Precision Neuromorphic Computing", Nature Communications, 11, pp. 5474
  • Akhil Dodda, Aaryan Oberoi, Tanushree H Choudhury, Joan M Redwing and Saptarshi Das, 2020, "Stochastic Resonance in MoS2 Photodetectors", Nature Communications, 11, pp. 4406
  • Darsith Jayachandran, Aaryan Oberoi, Amritanand Sebastian, Tanushree H Choudhury, Balakrishnan Shankar, Joan M Redwing and Saptarshi Das, 2020, "A low-power biomimetic collision detector based on an in-memory molybdenum disulfide photodetector", Nature Electronics, 3, pp. 646–655
  • Vijay K Singh, Rahul Pendurthi, Joseph R Nasr, Hitesh Mamgain, Radhey Shyam Tiwari, Saptarshi Das and Aanchal Srivastava, 2020, "Study on the Growth Parameters Electrical and Optical Behaviors of 2D Tungsten Disulfide", ACS Applied Materials & Interfaces, 12, (14)
  • Atriya Ghosh, Joshua Noble, Amritanand Sebastian, Saptarshi Das and Zhiwen Liu, 2020, "Digital Holography for Non-Invasive Quantitative Imaging of Two-Dimensional materials", Journal of Applied Physics, 127, (8)
  • Parijat Sengupta and Saptarshi Das, 2020, "Photon-assisted heat engines in the THz regime", Journal of Applied Physics, 127, (2), pp. 024305
  • Azimkhan Kozhakhmetov, Joseph R Nasr, Zhang Fu, Ke Xu, Natalie Briggs, Rafik Addou, Robert Wallace, Susan K Fullerton-Shirey, Mauricio M Terrones, Saptarshi Das and Joshua A Robinson, 2019, "Scalable BEOL compatible 2D tungsten diselenide", 2D Materials, 7, (1), pp. 015029
  • Amritanand Sebastian, Andrew Pannone, Shiva S Radhakrishnan and Saptarshi Das, 2019, "Gaussian Synapses for Probabilistic Neural Networks", Nature Communications, 10, (1), pp. 4199
  • Sarbashis Das, Akhil Dodda and Saptarshi Das, 2019, "A biomimetic 2D transistor for audiomorphic computing", Nature Communications, 10, (1), pp. 3450
  • Dheyaa Alameri, Joseph R Nasr, Devon Karbach, Yuzi Liu, Ralu Divan, Saptarshi Das and Irma Kuljanishvili, 2019, "Mask-free patterning and selective CVD-growth of 2D-TMDCs semiconductors", Semiconductor Science and Technology, 34, (8), pp. 085010
  • Fu Zhang, Yanfu Lu, Daniel S Schulman, Tianyi Zhang, Kazunori Fujisawa, Zhong Lin, Yu Lei, Ana L Elias, Saptarshi Das, Susan Sinnott and Humberto Terrones Maldonado, 2019, "Carbon doping of WS2 monolayers: Bandgap reduction and p-type doping transport", Science Advances, 5, (5), pp. eaav5003
  • Joseph R Nasr and Saptarshi Das, 2019, "Seamless Fabrication and Threshold Engineering in Monolayer MoS2 Dual-Gated Transistors via Hydrogen Silsesquioxane", Advanced Electronics Materials, 5, (4), pp. 1800888
  • Akshay Wali, Akhil Dodda, Yang Wu, Andrew Pannone, Likhith K Reddy, Sahin K Ozdemir, Ibrahim T Ozbolat and Saptarshi Das, 2019, "Biological physically unclonable function", Communications Physics, 2, (1), pp. 39
  • Andrew J Arnold, Tan Shi, Igor Jovanovic and Saptarshi Das, 2019, "Extraordinary Radiation Hardness of Atomically Thin MoS2", ACS Applied Materials & Interfaces, 11, (8), pp. 8391-8399
  • Xiaotian Zhang, Fu Zhang, Yuanxi Wang, Daniel S Schulman, Tianyi Zhang, Anushka Bansal, Nasim Alem, Saptarshi Das, Vincent H Crespi, Humberto Terrones Maldonado and Joan M Redwing, 2019, "Defect-Controlled Nucleation and Orientation of WSe2 on hBN: A Route to Single-Crystal Epitaxial Monolayers", ACS Nano, 13, (3), pp. 3341-3352
  • Akhil Dodda, Akshay Wali, Yang Wu, Andrew Pannone, Likhith K Reddy, Arnab Raha, Sahin K Ozdemir, Ibrahim T Ozbolat and Saptarshi Das, 2019, "Biological One-Way Functions for Secure Key Generation", Advanced Theory and Simulations, 2, (2), pp. 1800154
  • Natalie Briggs,, Shruti Subramanian, Zhong Lin, Xufan Lei, Xiaotian Zhang, Kehao Zhang, Kai Xiao, David Geohegan, Robert M Wallace, Long-Qing Chen, Mauricio Terrones Maldonado, Seyedehaida Ebrahimi, Saptarshi Das, Joan M Redwing, Christopher Hinkle, Kasra Momeni, Adrianus C van Duin, Vincent H Crespi, Swastik Kar and Joshua A Robinson, 2019, "A roadmap for electronic grade 2D materials", 2D Materials, 6, (2), pp. 022001
  • Amritanand Sebastian, Fu Zhang, Akhil Dodda, Dan May-Rawding, He Liu, Tianyi Zhang, Humberto Terrones Maldonado and Saptarshi Das, 2019, "Electrochemical Polishing of Two-Dimensional Materials", ACS Nano, 13, (1), pp. 78-86
  • Joseph R Nasr, Daniel S Schulman, Amritanand Sebastian, Mark W Horn and Saptarshi Das, 2019, "Mobility Deception in Nanoscale Transistors: An Untold Contact Story", Advanced Materials, 31, (2), pp. 1806020
  • Anjali Kumar, Amritanand Sebastian, Saptarshi Das and Emilie Ringe, 2018, "In Situ Optical Tracking of Electroablation in Two-Dimensional Transition-Metal Dichalcogenides", ACS Applied Materials and Interfaces, 10, (47), pp. 40773-40780
  • Nicholas A Simonson, Joseph R Nasr, Shruti Subramanian, Bhakti Jariwala, Rui Zhao, Saptarshi Das and Joshua A Robinson, 2018, "Low-temperature metalorganic chemical vapor deposition of molybdenum disulfide on multicomponent glass substrates", FlatChem, 11, pp. 32-37
  • Tarak K Patra, Fu Zhang, Daniel S Schulman, Henry Chan, Mathew J Cherukara, Mauricio Terrones, Saptarshi Das, Badri Narayanan and Subramanian KRS Sankaranarayanan, 2018, "Defect Dynamics in 2-D MoS2 Probed by Using Machine Learning, Atomistic Simulations, and High-Resolution Microscopy", ACS Nano, 12, (8), pp. 8006-8016
  • Zhong Lin, Yu Lei, Shruti Subramanian, Natalie Briggs, Yuanxi Wang, Chun-Li Lo, Eilam Yalon, David Lloyd, Sanfeng Wu, Kristie Koski, Richard Clark, Saptarshi Das, Robert M Wallace, Thomas Kuech, Joseph S Bunch, Xiaoqin Li, Zhihong Chen, Eric Pop, Vincent H Crespi, Joshua A Robinson and Mauricio Terrones Maldonado, 2018, "Research Update: Recent progress on 2D materials beyond graphene: From ripples, defects, intercalation, and valley dynamics to straintronics and power dissipation", APL Materials, 6, (8), pp. 080701
  • Mathew J Cherukara, Daniel S Schulman, Kiran R Sasikumar, Andrew J Arnold, Henry Chan, Sridhar Sadasivam, Wonsuk Cha, Jorg Maser, Saptarshi Das, Subramanian KRS Sankaranarayanan and Ross J Hardar, 2018, "Three-Dimensional Integrated X-ray Diffraction Imaging of a Native Strain in Multi-Layered WSe2", Nano Letters, 18, (3), pp. 1993–2000
  • Daniel S Schulman, Andrew J Arnold and Saptarshi Das, 2018, "Contact engineering for 2D materials and devices", Chemical Society Reviews, 47, (9), pp. 3037-3058
  • Parijat Sengupta, Saptarshi Das and Junxia Shi, 2018, "The electrothermal conductance and heat capacity of black phosphorus", The Journal of Chemical Physics, 148, (10), pp. 104701
  • Daniel S Schulman, Dan May Rawding, Fu Zhang, Drew Buzzell, Nasim Alem and Saptarshi Das, 2018, "Superior Electro-Oxidation and Corrosion Resistance of Monolayer Transition Metal Disulfides", ACS Applied Materials and Interfaces, 10, (4), pp. 4285-4294
  • Daniel S Schulman, Amritanand Sebastian, Drew Buzzell, Andrew Joseph Arnold and Saptarshi Das, 2017, "Facile Electrochemical Synthesis of 2D Monolayers for High-Performance Thin-Film Transistors", ACS Applied Materials and Interfaces, 9, (51), pp. 44617-44624
  • Yu-Ting Huang, Akhil Dodda, Daniel S Schulman, Amritanand Sebastian, Fu Zhang, Drew Buzzell, Mauricio Terrones, Shien-Ping Feng and Saptarshi Das, 2017, "Anomalous Corrosion of Transition Metal Diselenides Leading to Stable Monolayers", ACS Applied Materials and Interfaces, 9, (44), pp. 39059-39068
  • Daniel S Schulman, Andrew J Arnold, Ali Razavieh, Joseph R Nasr and Saptarshi Das, 2017, "A Review of Two Dimensional Heterostructures", IEEE Nanotechnology Magazine, 11, (2), pp. 6-17
  • Andrew J Arnold, Ali Razavieh, Joseph R Nasr, Daniel S Schulman, Chad M Eichfeld and Saptarshi Das, 2017, "Mimicking Neurotransmitter Release in Chemical Synapses via Hysteresis Engineering in MoS2 Transistors", ACS Nano, 11, (3), pp. 3110-3118
  • Saptarshi Das, 2016, "Two Dimensional Electrostrictive Field Effect Transistor (2D-EFET): A sub-60mV/decade Steep Slope Device with High ON current", Scientific Reports, 6, (34811)
  • Saptarshi Das, Mrinal K Bera, Sheng Tong, Badri Narayanan, Ganesh Kamath, Anil Mane, Arvydas P Paulikas, Mark R Antonio, Subramanian Sankaranarayanan and Andreas Roelofs, 2016, "A Self-Limiting Electro-Ablation Technique for the Top-Down Synthesis of Large-Area Monolayer Flakes of 2D Materials", Scientific Reports, 6, (28195)
  • Y L Wang, L R Thoutam, Z L Xiao, J Hu, Saptarshi Das, J Q Mao, J Wei, R Divan, A Luican-Mayer, G W Crabtree and W K Kwok, 2015, "Origin of the turn-on temperature behavior in WTe2", Physical Review B, 92, (18), pp. 180402
  • Ganesh R Bhimanapati, Zhong Lin, Vincent Meunier, Yeonwoong Jung, Judy Cha and Saptarshi Das, 2015, "Recent Advances in Two-Dimensional Materials beyond Graphene", ACS Nano, 9, (12), pp. 11509–11539
  • L R Thoutam, Y L Wang, Z L Xiao, Saptarshi Das, A Luican-Mayer, R Divan, G W Crabtree and W K Kwok, 2015, "Temperature-Dependent Three-Dimensional Anisotropy of the Magnetoresistance in WTe2", Physical Review Letters, 115, (4), pp. 046602
  • Saptarshi Das, Joshua A Robinson, Madan Dubey, Humberto Terrones and Mauricio Terrones Maldonado, 2015, "Beyond graphene: Progress in novel two-dimensional materials and van der waals solids", Annual Review of Materials Research, 45, pp. 1-27
  • Saptarshi Das, Wei Zhang, Laxman Raju Thoutam, Zhili Xiao, Axel Hoffmann, Marcel Demarteau and Andreas Roelofs, 2015, "A Small Signal Amplifier Based on Ionic Liquid Gated Black Phosphorous Field Effect Transistor", IEEE Electron Device Letters, 36, (6), pp. 621-623
  • Saptarshi Das, Marcel Demarteau and Andreas Roelofs, 2015, "Nb-doped single crystalline MoS2 field effect transistor", Applied Physics Letters, 106, (17), pp. 173506
  • Suprem R Das, Jiseok Kwon, Abhijith Prakash, Collin J Delker, Saptarshi Das and David B Janes, 2015, "Low-frequency noise in MoSe2 field effect transistors", Applied Physics Letters, 106, (8), pp. 083507
  • Saptarshi Das, Marcel Demarteau and Andreas Roelofs, 2014, "Ambipolar Phosphorene Field Effect Transistor", ACS Nano, 8, (11), pp. 11730–11738
  • Saptarshi Das, Wei Zhang, Marcel Demarteau, Axel Hoffmann, Madan Dubey and Andreas Roelofs, 2014, "Tunable transport gap in phosphorene", Nano Letters, 14, (10), pp. 5733-5739
  • Richard Gulotty, Saptarshi Das, Yuzi Liu and Anirudha V Sumant, 2014, "Effect of hydrogen flow during cooling phase to achieve uniform and repeatable growth of bilayer graphene on copper foils over large area", Carbon, 77, pp. 341-350
  • Saptarshi Das, Madan Dubey and Andreas Roelofs, 2014, "High gain, low noise, fully complementary logic inverter based on bi-layer WSe2 field effect transistors", Applied Physics Letters, 105, (8), pp. 083511
  • Ali Razavieh, Parsian Katal Mohseni, Kyooho Jung, Saumitra Mehrotra, Saptarshi Das, Sergey Suslov, Xiuling Li, Gerhard Klimeck, David B Janes and Joerg Appenzeller, 2014, "Effect of Diameter Variation on Electrical Characteristics of Schottky Barrier Indium Arsenide Nanowire Field-Effect Transistors", ACS Nano, 6, (8), pp. 6281-6287
  • Saptarshi Das, Richard Gulotty, Anirudha V Sumant and Andreas Roelofs, 2014, "All two-dimensional, flexible, transparent, and thinnest thin film transistor", Nano Letters, 14, (5), pp. 2861-2866
  • Saptarshi Das, Abhijith Prakash, Ramon Salazar and Joerg Appenzeller, 2014, "Toward Low-Power Electronics: Tunneling Phenomena in Transition Metal Dichalcogenides", ACS Nano, 8, (2), pp. 1681-1689
  • Saptarshi Das and Joerg Appenzeller, 2013, "WSe2 field effect transistors with enhanced ambipolar characteristics", Applied Physics Letters, 103, (10), pp. 103501
  • Saptarshi Das and Joerg Appenzeller, 2013, "Where Does the Current Flow in Two-Dimensional Layered Systems?", Nano Letters, 13, (7), pp. 3396–3402
  • Saptarshi Das and Joerg Appenzeller, 2013, "Screening and interlayer coupling in multilayer MoS2", physica status solidi (RRL)-Rapid Research Letters, 7, (4), pp. 268-273
  • Saptarshi Das, Hong-Yan Chen, Ashish Verma Penumatcha and Joerg Appenzeller, 2013, "High Performance Multi-layer MoS2 Transistors with Scandium Contacts", Nano Letters, 13, (1), pp. 100-105
  • Saptarshi Das and Joerg Appenzeller, 2012, "On the scaling behavior of organic ferroelectric copolymer PVDF-TrFE for memory application", Organic Electronics, 13, (12), pp. 3326-3332
  • Joshua T Smith, Saptarshi Das and Joerg Appenzeller, 2011, "Broken-Gap Tunnel MOSFET: A Sub-60mV/decade Transistor with a Constant Inverse Subthreshold Slope", IEEE Electron Device Letters, 32, (10), pp. 1367-1369
  • Saptarshi Das and Joerg Appenzeller, 2011, "On the importance of bandgap formation in graphene for analog device applications", IEEE Transactions on Nanotechnology, 10, (5), pp. 1093-1098
  • Saptarshi Das and Joerg Appenzeller, 2011, "FETRAM-An Organic Ferroelectric Material Based Novel Random Access Memory Cell", Nano Letters, 11, (9), pp. 4003-4007
  • Joshua T Smith, Christian Sandow, Saptarshi Das, Renato A Minamisawa, Siegfried Mantl and Joerg Appenzeller, 2011, "Silicon Nanowire Tunneling Field-Effect Transistor Arrays: Improving Subthreshold Performance Using Excimer Laser Annealing", IEEE Transaction on Electron Device, 58, (7), pp. 1822 - 1829
  • Harikrishnan Ravichandran, Yikai Zheng, Thomas F Schranghamer, Nicholas Trainor, Joan M Redwing and Saptarshi Das, , "A Monolithic Stochastic Computing Architecture for Energy Efficient Arithmetic", Advanced Materials, pp. 2206168

Other

  • Joerg Appenzeller, Feng Zhang, Saptarshi Das and Joachim Knoch, 2016, "Transition metal dichalcogenide Schottky barrier transistors", 17, pp. 207-234

Research Projects

  • June 2016 - March 2020, "Graphene/2D materials growth and properties on Corning substrates," (Sponsor: Corning, Incorporated [MP]).
  • October 2016 - September 2020, "E2CDA: Type II: 2D Electrostrictive FETs for Ultra-Low Power Circuits and Architectures," (Sponsor: National Science Foundation).
  • February 2017 - July 2020, "YIP: Investigation of Scalability and Reliability of Contacts to Two Dimensional Layered Semiconductors," (Sponsor: Air Force Office of Scientific Research).
  • October 2016 - September 2019, "E2CDA: Type II: 2D Electrostrictive FETs for Ultra-Low Power Circuits and Architectures," (Sponsor: Nanoelectronics Research Corporation).
  • November 2017 - July 2018, "Electroluminescent Cells Switched by Interdigitate Electrode," (Sponsor: PPG Industries [MP]).
  • January 2016 - June 2016, "Electrochemical Synthesis of 2D Nanosheets," (Sponsor: Argonne National Laboratory).

Honors and Awards

  • NSF CAREER Award, National Science Foundation, March 2021 - February 2026
  • Outstanding Research Award, Penn State Engineering Alumni Society, 2022 - 2022
  • Outstanding Teaching Award, Penn State Engineering Alumni Society, 2021 - 2021
  • Rustum And Della Roy Innovation In Materials Research, Penn State University, 2020 - 2021
  • Young Investigator Award, Air Force Office of Scientific Research, February 2017 - January 2020

Service

Service to Penn State:

Service to External Organizations: