Ashutosh Giri


  • Nanoscale Thermal Transport
  • Energy Conversion and Storage
  • Ultrafast Optical Spectroscopy
  • Nanomechanics
  • Condensed Matter Physics 
  • Nanoengineered Materials


  • Ph.D., Mechanical Engineering, University of Virginia, 2016
  • M.S., Mechanical Engineering, University of Pittsburgh, 2012
  • B.S., Physics, Adelphi University, 2010

Selected Publications

Thakur S, Giri A. Role of Anharmonicity in Dictating the Thermal Boundary Conductance across Interface Composed of Two-Dimensional Materials. Physical Review Applied, 2023; 20(1), 014039. doi: 10.1103/PhysRevApplied.20.014039
Giri A, Walton SG, Tomko J, et al. Ultrafast and Nanoscale Energy Transduction Mechanisms and Coupled Thermal Transport across Interfaces. ACS nano, 2023. doi: 10.1021/acsnano.3c02417
Rahman MA, Thakur S, Hopkins PE, Giri A. Engineering the Electronic and Thermal Properties of Two-Dimensional Covalent Organic Frameworks. The Journal of Physical Chemistry C, 2023. doi: 10.1021/acs.jpcc.3c00652
Thakur S, Giri A. Origin of Ultralow Thermal Conductivity in Metal Halide Perovskites. ACS Applied Materials & Interfaces, 2023. doi: 10.1021/acsami.3c03499
Dionne JC, Rahman MA, Giri A. Graphullerite: A Thermally Conductive and Remarkably Ductile Allotrope of Polymerized Carbon. ACS Omega, 2023. doi: 10.1021/acsomega.3c01412
Karna P, Giri A. Effects of intense laser irradiation on the thermal transport properties of metals. Physical Review B, 2023; 107(9), 094301. doi: 10.1103/PhysRevB.107.094301
Hoque MSB, Brummel IA, Hoglund ER, et al. Interface-independent sound speed and thermal conductivity of atomic-layer-deposition-grown amorphous AlN/Al2O3 multilayers with varying oxygen composition. Physical Review Materials, 2023; 7(2), 025401. doi: 10.1103/PhysRevMaterials.7.025401
Meirzadeh E, Evans AM, Rezaee M, et al. A few-layer covalent network of fullerenes. Nature, 2023; 613(4942), 71-76. doi: 10.1038/s41586-022-05401-w
Karna P, Hoque MSB, Thakur S, Hopkins PE, Giri A. Direct Measurement of Ballistic and Diffusive Electron Transport in Gold. Nano Letters, 2023. doi: 10.1021/acs.nanolett.2c03781
Giri A, Karna P, Hopkins PE. Exceptionally Enhanced Thermal Conductivity of Aluminum Driven by Extreme Pressures: A First-Principles Study. The Journal of Physical Chemistry Letters, 2022; 13, 10918-10923. doi: 10.1021/acs.jpclett.2c03090
Giri A, Thakur S, Mattoni A. Molecular Rotor-Rotor Heat Diffusion at the Origin of the Enhanced Thermal Conductivity of Hybrid Perovskites at High Temperatures. Chemistry of Materials, 2022. doi: 10.1021/acs.chemmater.2c02124
Rahman MA, Dionne CJ, Giri A. Thermally Conductive Self-Healing Nanoporous Materials Based on Hydrogen-Bonded Organic Frameworks. Nano Letters, 2022. doi: 10.1021/acs.nanolett.2c03032
Giri A, Dionne CJ. Magnesium Doping Enhances Thermal Conductivity of Polymerized Fullerene Crystals. The Journal of Physical Chemistry C, 2022; 126(40), 17406-17414. doi: 10.1021/acs.jppc.2c05503
Thakur S, Dionne CJ, Karna P, et al. Density and atomic coordination dictate vibrational characteristics and thermal conductivity of amorphous silicon carbide, Physical Review Materials, 2022; 6(9); 094601. doi: 10.1103/PhysRevMaterials.6.094601
Rahman MA, Dionne CJ, Giri A. Pore Size Dictates Anisotropic Thermal Conductivity of Two-Dimensional Covalent Organic Frameworks with Adsorbed Gases, ACS Applied Materials & Interfaces, 2022. doi: 10.1021/acsami.2c03019
Giri A, Dionne CJ, Hopkins PE. Atomic coordination dictates vibrational characteristics and thermal conductivity in amorphous carbon. npj Computational Materials, 2022; 8(1), 1-7. doi: 10.1038/s41524-022-00741-7
Dionne CJ, Rahman MA, Hopkins PE, Giri A. Supramolecular Interactions Lead to Remarkably High Thermal Conductivities in Interpenetrated Two-Dimensional Porous Crystals. Nano Letters, 2022; 22(7), 3071-3076. doi: 10.1021/acs.nanolett.2c00420
DeCoster M, Babaei H, Jung SS, et al. Hybridization from Guest-Host Interactions Reduces the Thermal Conductivity of Metal-Organic Frameworks. Journal of the American Chemical Society, 2022. doi: 10.1021/jacs.1c12545
Giri A, Evans AM, Rahman MA, McGaughey AJH, Hopkins PE. Highly Negative Poisson’s Ratio in Thermally Conductive Covalent Organic Frameworks.  ACS nano, 2022. doi: 10.1021/acsnano.1c09833
Hopkins EP , Tomko JA, Giri A. Quasi-harmonic theory for phonon thermal boundary conductance at high temperatures. Journal of Applied Physics, 2022;131(1), 015101. doi: 10.1063/5.0071429 
Thakur S, Dai Z, Karna P, Giri A. Tailoring the thermal conductivity of two-dimensional metal halide perovskites, Materials Horizons, 2022. doi: 10.1039/D2MH01070D
Rahman MA, Giri A. Uniquely anisotropic mechanical and thermal responses of hybrid organic-inorganic perovskites under uniaxial strain. The Journal of Chemical Physics, 2021; 155(12), 124703. doi: 10.1063/5.0065207
Evans AM, Giri A, Sangwan VK, et al. Thermally conductive ultra-low-k dielectric layers based on two-dimensional covalent organic frameworks. Nature Materials, 2021; 1-7. doi: 10.1038/s41563-021-00934-3
Giri A, Hopkins PE. Heat Transfer Mechanisms and Tunable Thermal Conductivity Anisotropy in Two-Dimensional Covalent Organic Frameworks with Adsorbed Glass. Nano Letters, 2021. doi: 10.1021/acs.nanolett.1c01863
Warzoha RJ, Wilson AA, Donovan BF, et al. Applications and impacts of nanoscale thermal transport in electronics packaging. Journal of Electronic Packaging, 2021; 143(2), 020804. doi: 10.1115/1.4049293
Braun JL, King SW, Hoglund ER, et al. Hydrogen effects on the thermal conductivity of delocalized vibrational modes in amorphous silicon nitride (a-SiNₓ : H). Physical Review Materials, 2021; 5(3), 035604. doi: 10.1103/PhysRevMaterials.5.035604
Giri A, Cheaito R, Gaskins JT, et al. Thickness-Independent Vibrational Thermal Conductance across Confined Solid-Solution Thin Films. ACS Applied Materials & Interfaces, 2021; 13(10), 12541-12549. doi: 10.1021/acsami.0c20608
Aryana K., Gaskins JT., Nag J., et al. Interface controlled thermal resistances of ultra-thin chalcogenide-based phase change memory devices. Nature Communications, 2021; 12(1), 1-11. doi: 10.1038/s41467-020-20661-8
Giri A., Origins of pressure-induced enhancement in thermal conductivity of hybrid inorganic-organic perovskites. Nanoscale, 2021; 13(2), 685-691. doi: 10.1039/D0NR08776A
Donovan BF., Warzoha RJ., Cosby T., et al. Strained Polymer Thermal Conductivity Enhancement Counteracted by Additional Off-Axis Strain. Macromolecules, 2020; 53(24), 11089-11097. doi: 10.1021/acs.macromol.0c01243
Rasel MAJ., Giri A., Olson DH., Ni C., Hopkins PE., Feser JP. Chain-Length Dependence of Thermal Conductivity in 2D Alkylammonium Lead Iodide Single Crystals. ACS Applied Materials & Interfaces, 2020; 12(48), 53705-53711. doi: 10.1021/acsami.0c10894
Krahl F., Giri A., Hoque MSB., Sederholm L., Hopkins PE., Karppinen M. Experimental Control and Statistical Analysis of Thermal Conductivity in ZnO-Benzene Multilayer Thin Films. The Journal of Physical Chemistry C, 2020; 124(45), 24731-24739. doi: 10.1021/acs.jpcc.0c06461
Giri A, Chou SS, Drury DE, et al. Molecular tail chemistry controls thermal transport in fullerene films. Physical Review Materials, 2020; 4(6), 065404. doi: 10.1103/PhysRevMaterials.4.065404
Koh YR, Cheng Z, Mamun A, et al. Bulk-like Intrinsic Phonon Thermal Conductivity of Micrometer-Thick AlN Films. ACS Applied Materials & Interfaces, 2020; 12(26), 29443-29450. doi: 10.1021/acsami.0c03978
Giri A, Hopkins GE. Achieving a better heat conductor. Nature Materials, 2020; 19(5), 482-484. doi: 10.1038/s41563-020-0658-z
Giri A, Chen AZ, Mattoni A, et al. Ultralow thermal conductivity of two-dimensional metal halide perovskites. Nano Letters, 2020; 20(5), 3331–3337. doi: 10.1021/acs.nanolett.0c00214
Giri A, Hopkins GE. A review of experimental and computational advances in thermal boundary conductance and nanoscale thermal transport across solid interfaces. Advanced Functional Materials, 2020; 30(8), 1903857. doi: 10.1002/adfm.201903857
Wang YS, Zhou X, Tomko JA, Giri A, Hopkins PE, Prezhdo OV. Electron–Phonon Relaxation at Au/Ti Interfaces Is Robust to Alloying: Ab Initio Nonadiabatic Molecular Dynamics. The Journal of Physical Chemistry C, 2019; 123(37), 22842-22850. doi: 10.1021/acs.jpcc.9b06914
Giri A, Hopkins PE. Resonant phonon modes in fullerene functionalized graphene lead to large tunability of thermal conductivity without impacting the mechanical properties. Journal of Applied Physics, 2019; 125(20), 205102. doi: 10.1063/1.5094061
Giri A, Gaskins JT, Wang Y-S, Prezhdo OV, Hopkins PE. First principles determination of ultrahigh electrical and thermal conductivity in free electron metals via pressure tuning the electron-phonon coupling factor. Physical Review B, 2019; 99(16), 165139. doi: 10.1103/PhysRevB.99.165139
Gaskins JT, Kotsonis G, Giri A, et al. Correction to Thermal Boundary Conductance Across Heteroepitaxial ZnO/GaN Interfaces: Assessment of the Phonon Gas Model. Nano Letters, 2019; 19(2), 1408-1408. doi: 10.1021/acs.nanolett.8b02837
Tomko JA, Olson DH, Giri A, et al. Nanoscale wetting and energy transmission at solid-liquid interfaces. Langmuir, 2019; 35, 2106-2114. doi: 10.1021/acs.langmuir.8b03675

Recent Grants

11/3/2021. PI.  American Chemical Society. “Thermal transport in covalent organic frameworks: Experiments and simulations on the fundamental role of gas adsorbates, with applications to natural gas storage."
9/20/2022. PI. U.S. Office of Naval Research “Unraveling the microscopic dynamics of coupled energy states in nanostructures"
7/7/22. Co-PI. University of Connecticut. “NIUVT2021:  COMP 45: Modeling experiments and prototype development of near theoretical capacity lithium ion batteries for unmanned underwater vehicles”
7/22/2021. PI. National Science Foundation. “Thermally Functional and Reversible Thermal Conductivity Switching In Nanoporous Molecular Frameworks”
6/24/2021. PI. Office of Naval Research. “YIP Unraveling the microscopic dynamics of coupled energy states in nanostructures.”

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