Ayaskanta Sahu

Ayaskanta Sahu

Assistant Professor

Chemical and Biomolecular Engineering

Biography

Ayaskanta Sahu is an Assistant Professor in the Department of Chemical and Biomolecular Engineering at NYU Tandon School of Engineering. His research focuses on investigating transport phenomena in new classes of nanostructured hybrid materials that have promise for optoelectronic and thermoelectric energy conversion.

Prior to joining NYU, he was a Materials Post-Doctoral Fellow at the Molecular Foundry, Lawrence Berkeley National Laboratory in Berkeley, California. He holds a B. Tech. degree in Chemical Engineering from the Indian Institute of Technology Roorkee and a Ph.D. in Chemical Engineering from the University of Minnesota. He spent a couple of years at ETH Zurich as a visiting scientist before joining the Molecular Foundry. 

Journal Articles

“Bottom-up design of de novo thermoelectric hybrid materials using chalcogenide resurfacing”, A. Sahu, B. Russ , N. Su , J. D. Forster , P. Zhou , E. S. Cho , P. Ercius , N. E. Coates , R. A. Segalman and J. J. Urban, J. Mater. Chem. A, 2017, DOI: 10.1039/C6TA09781B

"Carrier Scattering at Alloy Nanointerfaces Enhances Power Factor in PEDOT: PSS Hybrid Thermoelectrics”, E. W. Zaia, A. Sahu, P. Zhou, M. P. Gordon, J. D. Forster, Y. Liu, J. Guo, and J. J. Urban, Nano Lett., 2016, 16 (5), 3352

“Charge Trapping Defects in CdSe Quantum Dots," A. J. Almeida, A. Sahu, D. J. Norris, M. S. Brandt, M. Stutzmann, and R. N. Pereira, J. Phys. Chem. C., 2016, 120 (25), 13763

“Soft PEDOT: PSS Aerogel Architectures for Thermoelectric Applications,” M. P. Gordon, E. W. Zaia, P. Zhou, B. Russ, N. E. Coates, A. Sahu, and J. J. Urban,  J. Appl. Polym. Sci., 2016, 44070. DOI: 10.1002/app.44070

“Localization of Ag Dopant Atoms in CdSe Nanocrystals by Reverse Monte Carlo Analysis of EXAFS Spectra," A. Kompch, A. Sahu, C. Notthoff, F. Ott, D. J. Norris and M. Winterer, J. Phys. Chem. C., 2015, 119 (32), 18762

“Engineering Synergy: Energy and Mass Transport in Hybrid Nanomaterials," E. S. Cho, N. E. Coates, J. D. Forster, A. M. Ruminski, Boris Russ, A. Sahu, N. C. Su, F. Yang, and J. J. Urban, Adv. Mater., 2015, 27 (38), 5744 (Invited Article, Equal Contribution, Author List in α-order)

“Carrier Lifetime Enhancement in a Tellurium Nanowire/PEDOT:PSS Nanocomposite by Sulfur Passivation," J. Heyman, A. Sahu, N. E. Coates, B. Ehmann, and J. J. Urban, MRS Proc., 2015, 1742, mrsf14-1742-bb04-02

“Broadband Up-Conversion at Subsolar Irradiance: Triplet–Triplet Annihilation Boosted by Fluorescent Semiconductor Nanocrystals," A. Monguzzi, D. Braga, M. Gandini, V. C. Holmberg, D. K. Kim, A. Sahu, D. J. Norris, and F. Meinardi, Nano Lett., 2014, 14 (11), 6644

“Complex Chiral Colloids and Surfaces via High-Index Off-Cut Silicon,” K. M. McPeak, C. D. van Engers, M. Blome, J. H. Park, S. Burger, M. A. Gosálvez, A. Faridi, Y. R. Ries, A. Sahu, and D. J. Norris, Nano Lett., 2014, 14 (5), 2934

“Solid-Phase Flexibility in Ag2Se Semiconductor Nanocrystals,” A. Sahu, D. Braga, O. Waser, M. S. Kang, D. Deng, and D. J. Norris, Nano Lett., 2014, 14 (1), 115

“Influence of Silver Doping on Electron Transport in Thin Films of PbSe Nanocrystals,” M.S. Kang, A. Sahu, C.D. Frisbie and D.J. Norris, Adv. Mater., 2013, 25 (5), 725

“Electronic Impurity Doping in CdSe Nanocrystals," A. Sahu, M.S. Kang, A. Kompch, C. Notthoff, A.W. Wills, D. Deng, M. Winterer, C.D. Frisbie and D.J. Norris, Nano Lett., 2012, 12 (5), 2587 (Highlighted in Nature Materials, 2012, 11, 486)

“Quantum Confinement in Silver Selenide Semiconductor Nanocrystals," A. Sahu, A. Khare, D. Deng and D.J. Norris, Chem. Comm., 2012, 48, 5458

“Synthesis and Characterization of Al- and In-doped CdSe Nanocrystals," A.W. Wills, M.S. Kang, K.M. Wentz, S.E. Hayes, A.Sahu, W.L. Gladfelter and D.J. Norris, J. Mater. Chem., 2012, 22, 6335

“Size- and Temperature-Dependent Charge Transport in PbSe Nanocrystal Thin Films,” M.S. Kang, A. Sahu, D.J. Norris and C.D. Frisbie, Nano Lett., 2011, 11 (9), 3887

“Facile Synthesis of Silver Chalcogenide (Ag2E, E = S , Se and Te) Semiconductor Nanocrystals,” A.Sahu, L. Qi, M.S. Kang, D. Deng, and D.J. Norris, J. Am. Chem. Soc., 2011, 133(17), 6509

 “Size-dependent Electrical Transport in CdSe Nanocrystal Thin-films,” M.S. Kang, A. Sahu, D.J. Norris and C.D. Frisbie, Nano Lett., 2010, 10 (9), 3727

Education

University of Minnesota, Twin Cities, 2012

Doctor of Philosophy, Chemical Engineering

Indian Institute of Technology Roorkee, 2007

Bachelor of Technology, Chemical Engineering

Experience

New York University

Assistant Professor

From: January 2017 to present

Lawrence Berkeley National Laboratory

Materials Post-doctoral Fellow

From: April 2013 to December 2016

ETH Zurich

Visiting Scientist

From: April 2011 to March 2013

University of Minnesota, Twin Cities

Research and Teaching Assistant

From: August 2007 to November 2012

Research Interests

  • Colloidal Semiconductor Nanocrystals and Hybrid Organic/Inorganic Nanostructures
  • Bulk and Interfacial Doping of Semiconductor Nanocrystals and Hybrid Materials
  • Understanding and Controlling Energy Transport in Nanostructures
  • Optical, Electronic, Thermal, Thermo-electric Devices based on Nanostructures and Thin Films