Laboratory for Graphene Research

 

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Past positions:
2008-2010:

Research Assistant Professor Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute (RPI)

Fall 2009:

Adjunct Faculty

Department of Physics, Applied Physics and Astronomy, RPI

2007-2008:

Lead Research Specialist

Interconnect Focus Center New York at RPI

2004-2007:

Postdoctoral Research Associate Interconnect Focus Center New York at RPI

2003-2004:

Postdoctoral Research Associate

Physikalisches Institut, Universität Karlsruhe, Karlsruhe, Germany

A. Journal Publications:

-------- From Northeastern University --------

1.     Chemical Vapor Deposition Synthesized Atomically-Thin Molybdenum Disulfide with Optoelectronic-Grade Crystalline Quality, Ismail Bilgin , Fangze Liu , Anthony Vargas , Andrew Winchester , Ka Lun Man , Moneesh Upmanyu , Keshav M Dani , Gautam Gupta , Saikat Talapatra , Aditya D. Mohite , and Swastik Kar [ACS Nano, in press, http://pubs.acs.org/doi/pdf/10.1021/acsnano.5b02019]

2.     Direct and Scalable Deposition of Atomically Thin Low-Noise MoS2 Membranes on Apertures, Pradeep Waduge, Ismail Bilgin, Joseph Larkin, Robert Y. Henley, Kenneth Goodfellow, Adam C. Graham, David C. Bell, Nick Vamivakas, Swastik Kar, and Meni Wanunu [ACS Nano 9, 7352 (2015)]

3.     Giant Enhancement of Light Emission from Nanoscale Bi2Se3, Anthony Vargas, Fangze Liu, and Swastik Kar [Applied Physics Letters 106, 243107 (2015)]

4.     Graphene as a Massless Electrode for Ultra-highfrequency Piezoelectric Nano Electro Mechanical Systems, Zhenyun Qian, Fangze Liu, Yu Hui, Swastik Kar, and Matteo Rinaldi [Nano Letters 15, 4599 (2015)]

5.     Atomically thin layers of B-N-C-O with tunable composition, Birol Ozturk, Andres de-Luna-Bugallo, Eugen Panaitescu, Ann N. Chiaramonti, Fangze Liu, Anthony Vargas, Xueping Jiang, Neerav Kharche, Ozgur Yavuzcetin, Majed Alnaji, Matthew J. Ford, Jay Lok, Yongyi Zhao, Nicholas King, Nibir K. Dhar, Madan Dubey, Saroj K. Nayak, Srinivas Sridhar, Swastik Kar [Science Advances 1, Article number: e1500094 (2015)]

6.     Ultrafast Intrinsic Photoresponse and Direct Evidence of Sub-gap States in Liquid Phase Exfoliated MoS2Thin Films, Sujoy Ghosh, Andrew Winchester, Baleeswaraiah Muchharla, Mr. Milinda Wasala, Siming Feng, Ana Laura Elias, Bala Murali Krishna Mariserla, Takaaki Harada, Catherine Chin, Keshav Dani, Swastik Kar, Mauricio Terrones, Saikat Talapatra, [Scientific Reports 5, Article number: 11272 (2015)]

7.     Programmed Synthesis of Freestanding Graphene Nano-Membrane Arrays, Pradeep Waduge, Joseph Larkin, Moneesh Upmanyu, Swastik Kar and Meni Wanunu, [Small 11, 597 (2015)]

8.     Quantum Carrier Reinvestment-Induced Ultrahigh and Broadband Photocurrent Responses in Graphene-Silicon Junctions, Fangze Liu and Swastik Kar, [ACS Nano 8, 102704 (2014)]

9.     Sculpting carbon bonds for allotropic transformation through solid-state re-engineering of –sp2 carbon, Hyun Young Jung, Paulo T. Araujo, Younglae Kim, Sung Mi Jung, Xiaoting Jia, Sanghyun Hong, Chi Won Ahn, Jing Kong, Mildred S. Dresselhaus, Swastik Kar, and Yung Joon Jung, [Nature Communications 5, Article number: 4941 (2014)]

10.   Universal ac conduction in large area atomic layers of CVD grown MoS2, S. Ghosh, S. Najmaei, S. Kar, R. Vajtai, J. Lou, N.R. Pradhan, L. Balicas, P.M. Ajayan, S. Talapatra. [Physical Review B 89, 126422 (2014)]

11.   The Changing Colors of a Quantum-Confined Topological Insulator, Anthony Vargas, Susmita Basak, Fangze Liu, Baokai Wang, Eugen Panaitescu, Hsin Lin, Robert Markiewicz, Arun Bansil, Swastik Kar. [ACS Nano 8, 1222 (2014)]

12.   Voltage-switchable photocurrents in single-wall carbon nanotube - silicon junctions for analogue and digital optoelectronics, Young Lae Kim , Hyun Young Jung , Sora Park , Bo Li , Fangze Liu , Ji Hao , Young-Kyun Kwon , Yung Joon Jung, Swastik Kar [Nature Photonics 8, 239 (2014)]

13.   Carbon Nanotubes and Graphene Nanoribbons: Potentials for Nanoscale Electrical Interconnects, Caterina Soldano, Saikat Talapatra, Swastik Kar [Electronics 2, 280 (2013)]

14.   Tunable Electronics in Large Area Atomic Layers of Boron- Nitrogen-Carbon, Baleeswaraiah Muchharla, Arjun Pathak, Zheng Liu, Li Song, Thushari Jayasekera, Swastik Kar, Robert Vajtai, Luis Balicas, Pulickel M Ajayan, Saikat Talapatra, and Naushad Ali [Nano Letters 13, 3476 (2013)]

15.   Adhesion of graphene sheet on nano-patterned substrates with nano-pillar array, Guangxu Li, Cihan Yilmaz, Xiaohong An, Sivasubramanian Somu, Swastik Kar, Yung Joon Jung, Ahmed Busnaina, and Kai-Tak Wan [Journal of Applied Physics 113, 244303 (2013)]

16.   Optimizing performance parameters of graphene-silicon and thin transparent graphite-silicon heterojunction solar cells, Xiaohong An, Fangze Liu, Swastik Kar [Carbon 57, 329 (2013)]

17.   Tunable Graphene–Silicon Heterojunctions for Ultrasensitive Photodetection, Xiaohong An, Fangze Liu, Yung Joon Jung, Swastik Kar [Nano Letters 13, 909 (2013)]

18.   Effect of 1- Pyrene Carboxylic Acid Functionalization of Graphene on its Capacitive Energy Storage, Ghosh, Sujoy; An, Xiaohong; Shah, Rakesh; Rawat, Dinesh; Dave, Bakul; Kar, Swastik; Talapatra, Saikat [Journal of Physical Chemistry C 116, 20688 (2012)]

19.   Large-Area Synthesis of Graphene on Palladium and their Raman Spectroscopy, Xiaohong An, Fangze Liu, Yung Joon Jung, Swastik Kar [Journal of Physical Chemistry C 116, 16412 (2012)]

20.   Effect of Layer Stacking on the Electronic Structure of Graphene Nanoribbons, Neerav Kharche, Yu Zhou, Kevin P. O’Brien, Swastik Kar, and Saroj K. Nayak [ACS Nano 5, 6096 (2011)]

21.   Highly Organized Two and Three Dimensional Singlewalled Carbon Nanotubes-Polymer Hybrid Architectures, Bo Li, Myung Gwan Hahm, Young Lae Kim, Hyun Young Jung, Swastik Kar and Yung Joon Jung [ACS Nano 5, 4826 (2011)]

22.   The electrical characterization of a multi electrode odor detection system based on the single SnO2 nanowire, V. V. Sysoev, E. Strelcov, S. Kar, A. Kolmakov [Thin Solid Films 520, 898(2011)]

23.   Cleaning organized single-walled carbon nanotube interconnect structures for reduced interfacial contact resistance, Young Lae Kim, Hyun Young Jung, Swastik Kar, and Yung Joon Jung, [Carbon, 49 2450 (2011)]

24.   Optical and Sensing Properties of 1-Pyrenecarboxylic Acid-Functionalized Graphene Films Laminated on Polydimethylsiloxane Membranes, Xiaohong An, Thomas W. Butler, Morris Washington, Saroj K. Nayak, and Swastik Kar, [ACS Nano 5,1003 (2011)]

25.   Cobalt Nanocluster-Filled Carbon Nanotube Arrays: Engineered Photonic Bandgap and Optical Reflectivity, Caterina Soldano, Francesco Rossella, Vittorio Bellani, Silvia Giudicatti, and Swastik Kar, [ACS Nano 4, 6573 (2010)]

-------- From Prior Affiliations --------

26.   [Cover Article]: Stable Aqueous Dispersions of Noncovalently Functionalized Graphene from Graphite and their Multifunctional High-Performance Applications, Xiaohong An, Trevor Simmons, Rakesh Shah, Christopher Wolfe, Kim M. Lewis, Morris Washington, Saroj K. Nayak, Saikat Talapatra, and Swastik Kar, [Nano Letters 10, 4295 (2010)]

27.   Single-Nanobelt Electronic Nose: Engineering and Tests of the Simplest Analytical Element, Victor V. Sysoev, Evghenii Strelcov, Martin Sommer, Michael Bruns, Ilia Kiselev, Wilhelm Habicht, Swastik Kar, Luca Gregoratti, Maya Kiskinova and Andrei Kolmakov, [ACS Nano, 4 4487 (2010)]

28.   Importance of Cr2O3 layer for growth of carbon nanotubes on superalloys, Sunil K. Pal , Swastik Kar, Sarah Lastella, Ashavani Kumar, Robert Vajtai, Saikat Talapatra, Theodorian Borca-Tasciuc and Pulickel M. Ajayan, [Carbon 48, 844 (2010)]

29.   Ferrocene Derived Carbon Nanotubes and Their Application as Electrochemical Double Layer Capacitor Electrodes, R. Shah, X.F. Zhang, X. An, S. Kar and S. Talapatra, [Journal of Nanoscience and Nanotechnology, Special issue on carbon nanotubes, 10, 4043 (2010)]

30.   Highly Aligned Scalable Platinum-decorated Single-wall Carbon Nanotube Arrays for Nanoscale Electrical Interconnects, Young Lae Kim, Bo Li, Xiaohong An, Myung Gwan Hahm, Li Chen, Morris Washington, P.M. Ajayan, Saroj K. Nayak, Ahmed Busnaina, Swastik Kar, and Yung Joon Jung, [ACS Nano, 3 2818 (2009)]

31.   A Generic Synthetic Approach to Interconnected Nanowire/nanotube and Nanotube/nanowire/nanotube Heterojunctions with Branched Topology, Guowen Meng, Fangming Han, Xianglong Zhao, Bensong Chen, Dachi Yang, Jianxiong Liu, Mingguang Kong, Xiaoguang Zhu, Qiaoling Xu, Yung Joon Jung, Yajun Yang, Zhaoqin Chu, Min Ye, Swastik Kar, Robert Vajtai, and Pulickel M. Ajayan, [Angewandte Chemie, (International Edition) 48 7166 (2009)]

32.   Lüttinger Liquid to Al’tshuler-Aronov Transition in Disordered, Many-Channel Carbon Nanotubes, S. Kar, C. Soldano*, L. Chen, S. Talapatra, R. Vajtai, S.K. Nayak and P.M. Ajayan, [ACS Nano, 3 207 (2009)]

33.   Ionically Self Assembled Polyelectrolyte Based Carbon Nanotube Fibers, Sandeep Razdan, Prabir Patra, Lijie Ci, Swastik Kar, Robert Vajtai, Akos Kukovecz, I. Kiricsi, Zoltan Konya, Pulickel Ajayan, [Chemistry of Materials, 21 3062 (2009)]

34.   Enhancement of Electrical performance of Ultra-long multi-wall carbon nanotube arrays by Au/Pd coating and High-Bias Treatment, S. Talapatra, S. Kar, R. Shah, C. Schenk, X.F. Zhang, [Science of Advanced Materials, 1, 192–197 (2009), Invited Article]

35.   Fabrication and Electrical Characterization of Densified Carbon Nanotube Micro-Pillars for IC Interconnectio, Zhengchun Liu, Lijie Ci, Swastik Kar, Pulikel M. Ajayan, and Jian-Qiang Lu, [IEEE Transactions on Nanotechnology, 8 196 (2009)]

36.   Detection of Nanoscale Ferromagnetic Activity using a Single Carbon Nanotube, C. Soldano*, S. Kar*, S. Talapatra, S.K. Nayak and P.M. Ajayan, [Nano Letters, 8, 4498 (2008)]

37.   Air-assisted growth of ultra-long carbon nanotube bundles, X. Li, X. Zhang, L. Ci, R. Shah, C. Wolfe, S. Kar, S. Talapatra  and P.M. Ajayan, [Nanotechnology, 19 455609 (2008)]

38.   Thermal and electrical transport along MWCNT arrays grown on Inconel substrates, S.K. Pal, Y. Son, T. Borca-Tasciuc, D-A. Borca-Tasciuc, S. Kar, R. Vajtai, P.M. Ajayan, [Journal of Materials Research, 23 2099 (2008)]

39.   Controlled Ohmic and nonlinear electrical transport in inkjet-printed single-wall carbon nanotube films, T. Mustonen, J. Mäklin, K. Kordás, N. Halonen, G. Tóth, S. Saukko, J. Vähäkangas, H. Jantunen, S. Kar, P.M. Ajayan, R. Vajtai, P. Helistö, H. Seppä, H. Moilanen, [Physical Review B, 77,125430 (2008)]

40.   Time and temperature dependence of multi-walled carbon nanotubegrowth on Inconel 600, S.K. Pal, S. Talapatra, S Kar, L. Ci, R Vajtai, T. Borca-Tasciuc, L.S. Schadler, P.M. Ajayan, [Nanotechnology, 19, 045610 (2008)]

41.   Temperature dependent high-bias electrical properties of C60 microrods, A. Goyal, A. Kumar, C. Soldano, S. Kar, P.M. Ajayan, [Journal of Applied Physics, 103, 064903 (2008)]

42.   First Principle studies of Defect Induced Magnetism in Carbon, Y. Zhang, S. Talapatra, S. Kar, R. Vajtai, S. K. Nayak, P. M. Ajayan, [Physical Review Letters, 99, 107201 (2007)]

43.   Densified Aligned Carbon Nanotube Films via Vapor Phase Infiltration of Carbon, X. Li, L. Ci, S. Kar, C. Soldano, S.J. Kilpatrick, P.M. Ajayan, [Carbon, 45, 847 (2007)]

44.   Aligned Carbon Nanotube-Polymer Hybrid Architectures for Diverse Flexible Electronic Applications, Y.J. Jung, S. Kar, S. Talapatra, C. Soldano, G. Viswanathan, X. Li, Z. Yao, F.S. Ou, A. Avadhanula, R. Vajtai, S. Curran, O. Nalamasu, P.M. Ajayan, [Nano Letters**, 6 413 (2006)]

45.   Direct Growth of Aligned Carbon Nanotubes on Bulk Metals, S. Talapatra, S. Kar, S. K. Pal, R. Vajtai, L. Ci, P. Victor, M. M. Shaijumon, S. Kaur, O. Nalamasu, P. M. Ajayan, [Nature Nanotechnology, 1, 112 (2006)]

46.   Multifunctional composites using reinforced laminae with carbon-nanotube forests, V. P. Veedu, A. Cao, X. Li, K. Ma, C. Soldano, S. Kar, P.M. Ajayan, M.N. Ghasemi-Nejhad, [Nature Materials, 5, 457 (2006)]

47.   Ink-jet Printing of Electrically Conductive Patterns of Carbon Nanotubes, K. Kordas, T. Mustonen, G. Toth, H. Jantunen, M. Lajunen, C. Soldano, S. Talapatra, S. Kar, R. Vajtai, P.M. Ajayan, [Small, 2, 1021 (2006)]

48.   Room Temperature Ferromagnetism in Graphitic Nanoclusters, S. Talapatra, T. Kim, B.Q. Wei, S. Kar, R. Vajtai, G.V.S. Sastry, M. Shima, D.  Srivastava, P.M. Ajayan, [Nano Pages, 1, 315 (2006)]

49.   Charge-Injection-induced Dynamic Screening and Origin of Hysteresis in Field-modulated Transport in Single-Wall Carbon Nanotubes, A. Vijayaraghavan, S. Kar (corr. auth.), C. Soldano, S. Talapatra, O. Nalamasu P.M. Ajayan, [Applied Physics Letters, 89, 162108 (2006), and Virtual J. Nanoscale Science & Tech., Oct 30, 2006]

50.   Quantitative analysis of Hysteresis in Carbon Nanotube Field-Effect devices, S. Kar, A. Vijayaraghavan, C. Soldano, S. Talapatra, R. Vajtai, O. Nalamasu, P.M. Ajayan, [Applied Physics Letters, 89, 132118 (2006)]

51.   Contact Transfer of Aligned Carbon Nanotube Arrays onto Conducting Substrates, A. Kumar, V. Pushparaj, S. Kar, O. Nalamasu, P.M. Ajayan, [Applied Physics Letters, 89, 163120 (2006)]

52.   Effect of Ambient Pressure on Resistance and Resistance Fluctuations in Single-Wall Carbon Nanotube Devices, A. Vijayaraghavan, S. Kar, S. Rumyantsev, A. Khanna, C. Soldano, N. Pala, R. Vajtai, K. Kanzaki, Y. Kobayashi, O. Nalamasu, M. S. Shur, P. M. Ajayan, [Journal of Applied Physics, 100, 024315 (2006)]

53.   Metal-Semiconductor Transition in Single-Walled Carbon Nanotubes Induced by Low-Energy electron Irradiation, A. Vijayaraghavan, K. Kanzaki, S. Suzuki,Y. Kobayashi, H. Inokawa, Y. Ono, S. Kar, P.M Ajayan, [Nano Letters, 5 1575 (2005)]

54.   Observation of non-Gaussian conductance fluctuations at low temperatures in Si:P(B) at the metal-insulator transition, S. Kar, A. K. Raychaudhuri, A. Ghosh, H. v. Lohneysen and G. Weiss, [Physical Review Letters, 91 216603 (2003)]

55.   Superconducting NbSe2 nanostructures, M. Nath, S. Kar, A. K. Raychaudhuri, C.N.R. Rao, [Chemical Physics Letters, 368 690 (2003)]

56.   Suppression of Universal Conductance Fluctuations by an electric field in doped Si(P,B) near the metal-insulator transition, A.K. Raychaudhuri, S. Kar, A. Ghosh, [Physica E: Low-dimensional Systems and Nanostructures, 18 284 (2003)]

57.   Onset of long-range diffusion and exponent of 1/fα noise in metal films with electromigration damage, S. Kar, A.K. Raychaudhuri, [Applied Physics Letters, 81 5165 (2002)]

58.   Flicker noise in degenerately doped Si single crystals near the metal insulator transition, A.K. Raychaudhuri, A. Ghosh, S. Kar, [Pramana - Journal of Physics, 58 343 (2002)]

59.   Temperature and frequency dependence of flicker noise in degenerately doped Si single crystals, S. Kar, A.K. Raychaudhuri, [Journal of Physics D: Applied Physics, 34 3197 (2001)]

B. Peer-reviewed Proceedings:

60.   Energetics of magnetic states in graphene nano-triangles: An ab-initio density functional theory study, Albert K. Dearden, Swastik Kar, John Hagopian, Pulickel M. Ajayan, and Saroj K. Nayak, Functional Materials: Proceedings of the International Workshop on Functional Materials (IWFM-2011), AIP Conf. Proc. 1461, 34 (2012)

61.   245 MHz Graphene-Aluminum Nitride Nano Plate Resonator, Z. Qian, Y. Hui, F. Liu, S. Kar and M. Rinaldi, Technical digest of Transducers 2013, The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (accepted)

62.   Photodetection with heterojunctions of graphene and silicon, F. Liu and S. Kar, SPIE DSS 2013 Micro-Nanotechnology Sensors, Systems, and Applications Conference (accepted)

63.   Graphene and thin graphitic electrode based solar cells with high conversion efficiency, Xiaohong An, Fangze Liu, and Swastik Kar, 245th ACS National Meeting & Exposition Submission Confirmation (accepted)

64.   Densification of Carbon Nanotube Bundles for Interconnect Application, Proceedings of IEEE 2007 International Interconnect Technology Conference (IITC 2007), 201, 2007

65.   Investigation on Site Density of Carbon Nanotube Forests, MRS Proceedings Volume 1018E, pp. EE512.1-6, MRS 2007

66.   Electro-mechanically robust, flexible carbon nanotube – PDMS composite for high performance field emission, MN06, Proceedings of Multifunctional Nanocomposites 2006

67.   Low frequency non-Gaussian conductance fluctuations in Si near the insulator-metal transition (Invited Paper), Fluctuations and Noise in Materials, Proceedings of SPIE 5469, 61 (2004)

68.   Variation of the Probability Density function of resistance fluctuations across the metal-insulator transition in Si:P, Fluctuations and Noise in Materials, Proceedings of SPIE 5469, 345 (2004)

69.   Temperature and doping dependence of conductivity noise in degenerately doped Si Single crystals, Proceedings of the 16th International Conference on Noise in Physical Systems and 1/f Fluctuations ICNF 2001 (World Scientific, 2001) page 111

70.   1/f noise in heavily doped Silicon Single crystals, Proceedings of the 44th DAE Solid State Physics (India) Symposium 2001 (Narosa Publishing House, 2001) page 539

71.   Low level measurements using OPAMP CA3140 at 77K, Proceedings of the 44th DAE Solid State Physics (India) Symposium 2001 (Narosa Publishing House, 2001) page 131

C. Book Chapter:

72.   Synthesis of Graphene, Swastik Kar and Saikat Talapatra, in Encyclopedia of Nanotechnology (Ed. Bharat Bhushan), Springer, 2012]

73.   Highly Organized Single-Walled Carbon Nanotube Networks and Their Electrical Transport Properties, Young Lae Kim, Laila JaberAnsari, Hailong Wang, Xugang Xiong, Sivasubramanian Somu, Ahmed Busnaina, Moneesh Upmanyu, Yung Joon Jung, Mark C. Strus, Ann N. Chiaramonti, Robert R. Keller, Swastik Kar

[Invited chapter in Dekker Encyclopedia of Nanoscience and Nanotechnology, 2nd Edition, Taylor and Francis: New York, Published online: 25 Jun 2012; 1-14]

74.   Flicker noise in degenerately doped Si single crystals near the metal-insulator transition, A. K. Raychaudhuri, Arindam Ghosh and Swastik Kar, in Mesoscopic and Disordered Systems, A. M. Jayannavar, H. R. Krishnamurthy, A. K. Raychaudhuri (Eds.), Indian Academy of Sciences, Bangalore, India, 2002]

D.  Patent(s):

75.   US Patent: Carbon nanotube growth on metallic substrate using vapor phase catalyst delivery, Talapatra; Saikat, Kar; Swastik, Pal; Sunil, Vajtai; Robert, Ajayan; Pulickel, Received: June 26, 2012

E. Patent Applications:

76.   Graphene dispersion, and graphene membrane and devices incorporating the same, Xiaohong An, Swastik Kar, Trevor Simmons, Saroj Nayak, Morris A. Washington, Saikat Talapatra, Rakesh Shah, Published: Oct 20, 2011

77.   Ultrasensitive ion detector using carbon nanotubes or graphene, Bo Li, Ji Hao, Hyun Young Jung, Yung Joon Jung, Swastik Kar, Published: Jun 26, 2014

78.   Optoelectronic devices based on heterojunctions of single-walled carbon nanotubes and silicon, Yung Joon Jung, Swastik Kar, Young Lae Kim, Hyun Young Jung, Young Kyun Kwon, Published: Aug 7, 2014

79.   Tunable heterojunction for multifunctional electronics and photovoltaics, Xiaohong An, Fangze Liu, Swastik Kar, Published: Mar 6, 2014