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Josh D. Caldwell

Associate Professor of Mechanical Engineering
Associate Professor of Electrical Engineering


My research focuses on the confinement of electromagnetic energy and charged particles in the nano- to atomic-scale dimensions and the interactions between such confined systems. This involves the sub-diffractional confinement of light using 'polaritons' within the optical spectral domain (primarily the infrared), the design of nanoscale optical components, and identifying and characterizing novel optical, electro-optical and electronic materials.


Invited Lecturer Nato School of Atomic & Molecular Spectroscopy
Primary Inventor on NRL Edison Award (top patent of the year), 2014
4x NRL Alan Berman Award winner (top paper of the year)
NRL Sabbatical Recipient at University of Manchester (UK) with the Novoselov group, 2013-2014
Young Scientist Award ESR in Low Dimensional Structures Workshop
Young Scientist Award PCSI Conference

Selected Publications:

Polaritons in layered 2D Materials. Low, T; Chaves A; Caldwell, JD; Kumar, A; Fang, NX; Avouris, P; Heinz, TF; Guinea, F; Martin-Moreno, L; Koppens, F, NATURE MATERIALS, 16, 182-194 , (2017) View Abstract

Atomic-scale photonic hybrids for mid-infrared and terahertz nanophotonics. Caldwell, JD; Vurgaftman, I; Tischler, JG; Glembocki, OJ; Owrutsky, JC; Reinecke, TL, NATURE NANOTECHNOLOGY, 11, 9-15 , (2016) View Abstract

Hyperbolic phonon-polaritons in boron nitride for near-field optical imaging and focusing. Li, PN; Lewin, M; Kretinin, AV; Caldwell, JD; Novoselov, KS; Taniguchi, T; Watanabe, K; Gaussmann, F; Taubner, T, NATURE COMMUNICATIONS, 6, 7507 , (2015) View Abstract

Low-loss, infrared and terahertz nanophotonics using surface phonon polaritons. Caldwell, JD; Lindsay, L; Giannini, V; Vurgaftman, I; Reinecke, TL; Maier, SA; Glembocki, OJ, NANOPHOTONICS, 4, 44-68 , (2015) View Abstract

Sub-diffractional volume-confined polaritons in the natural hyperbolic material hexagonal boron nitride. Caldwell, JD; Kretinin, AV; Chen, YG; Giannini, V; Fogler, MM; Francescato, Y; Ellis, CT; Tischler, JG; Woods, CR; Giles, AJ; Hong, M; Watanabe, K; Taniguchi, T; Maier, SA; Novoselov, KS, NATURE COMMUNICATIONS, 5, 5221 , (2014) View Abstract