{"id":1067,"date":"2025-04-17T11:21:09","date_gmt":"2025-04-17T16:21:09","guid":{"rendered":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/?page_id=1067"},"modified":"2026-10-05T09:16:11","modified_gmt":"2026-10-05T14:16:11","slug":"20224-present","status":"publish","type":"page","link":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/publications\/20224-present\/","title":{"rendered":"2020 – present"},"content":{"rendered":"

2026<\/strong><\/p>\n

Richarda Niemann, Doroth\u00e9e S. Mader, Gonzalo \u00c1lvarez-P\u00e9rez, Ana I. F. Tresguerres-Mata, Aitana Tarazaga Mart\u00edn-Luengo, Stefan Partel, Joshua D. Caldwell, Niclas S. Mueller, Martin Wolf, Javier Mart\u00edn-S\u00e1nchez, Pablo Alonso-Gonz\u00e1lez, and Alexander Paarmann, “In-plane vector-field imaging of propagating surface phonon polaritons [Invited],” Opt. Mater. Express 16<\/b>, 3483-3495 (2026).<\/div>\n
https:\/\/doi.org\/10.1364\/OME.609623<\/a>.\u00a0 \u00a0Awarded EDITOR\u2019S PICK<\/div>\n

M. T. Long, H. Salihoglu, S. Zare, G. Alvarez-Perez, M. Obst, P.E. Hopkins, S. De Liberato, D. G. Walker, J. D. Caldwell, \u201cNear-field Radiative Heat Transfer across Isotropic Solid-State Separations.\u201d Optical Materials Express<\/em> 16<\/strong>, 3496-3508 (2026). https:\/\/doi.org\/10.1364\/OME.607322<\/a><\/p>\n

R. Bangari, M. Mosayebi, J. E. Buchner, J. D. Caldwell, N. D. Bassim, T. G. Folland, \u201cAligning van der Waals Heterostructures Using Electron Backscatter Diffraction.\u201d ACS Nanoscience 6, 654-661 (2026). https:\/\/doi.org\/10.1021\/acsnanoscienceau.6c00042<\/a><\/p>\n

A. S. Senarath, S. Islam, A. Sengupta, O. Meilander, J. M. Osheroff, T. Anderson, A. Jacobs, R. Kaplar, M. A. Ebrish, S. L. Kosier, D. M. Fleetwood, J. D. Caldwell, R. D. Schrimpf, \u201cInfluence of Ion LET and Epitaxial Thickness on Single-Event Effects in Homojunction GaN Vertical Diodes.\u201d IEEE Transactions on Nuclear Science<\/em>, published online 10.1109\/TNS.2026.3725651(2026).<\/p>\n

S. Saha, R. Kowalski, J. R. Matson, T. G.Folland, T. Low, J. D. Caldwell, I-H. Lee, S-H. Oh, \u201cFar-Infrared Hyperbolic Phonon\u2013Polaritons in Zirconium Disulfide.\u201d Advanced Materials<\/em> 38<\/strong>, e74154 (2026). https:\/\/doi.org\/10.1002\/adma.74154<\/a>.<\/p>\n

T.S. Arnaud, R. W. Spangler, J. D. Georgaras, J. B. Haber, D. Hirt, M. Obst, G. Alonzo-Perez, M. Long III, F. G. Kaps, J. Wetzel, C. Ragle, J. E. Buchner, Y. Kim, A. Senarath, R. Niemann, M. He, G. Carini, U. Arregui-Leon, A. C. Behara, R. Bangari, N. Sahoo, N. C. Brumby, J. M. Klopf, M. Wolf, L. M. Eng, S. C. Kehr, T. G. Folland, A. Paarmann, P. E. Hopkins, F. Jornada, J-P. Maria, J. D. Caldwell, \u201cTailoring phonon-driven responses in \u03b1-MoO3 through isotopic enrichment.\u201d Advanced Materials <\/em>38<\/strong>, e73629 (2026). https:\/\/doi.org\/10.1002\/adma.73629(2026)<\/a>.<\/p>\n

P. Das, D. Mukhopadhyay, E. R. Bartelsen, R. Karanje, K. C. Maurya, P. Rao, A. I. K. Pillai, S. K. Selvaraja, M. Garbrecht, J. D. Caldwell, B. Saha, \u201cRoom-Temperature Hole Plasmons and Plasmon-Phonon Interactions in Epitaxial p\u2011Type Scandium Nitride.\u201d Nano Letters 26, 9614-9621 (2026). https:\/\/doi.org\/10.1021\/acs.nanolett.6c02445<\/a><\/p>\n

R. W. Spangler, T. S. Arnaud, C. Whittier, B. Kamaliya, S. S. Tripathy, P. E. Hopkins, E. C. Dickey, J. D. Caldwell, N. D. Bassim, J-P Maria, \u201cMillimeter-Scale Single-Crystal \u03b1\u2011MoO3 Nanosheets Grown by Alkali Salt-Assisted Chemical Vapor Deposition.\u201d ACS Nano 20<\/strong>, 20379-20391 (2026). https:\/\/doi.org\/10.1021\/acsnano.6c07396<\/a><\/p>\n

M. Ghorbani, B. Kamaliya, M. J. Tolchin, R. W. Spangler, Y. Kim, J. D. Caldwell, J-P. Maria, N. D. Bassim, \u201cDopant distribution in Ga-implanted CdO – a correlative Microscopy and molecular dynamics study.\u201d Advances Functional Materials <\/em>36<\/strong>, e77441 (2026). https:\/\/doi.org\/10.1002\/adfm.77441 2026<\/a>.<\/p>\n

R. W. Spangler, J. M. Shusterman, T. S. Arnaud, A. V. Ievlev, J. D. Caldwell, P. E. Hopkins, J-P. OMaria, \u201cRapid synthesis of dual-element isotope-enriched \ud835\udefc\u2212Mo O3<\/sup>crystals by reactive vapor transport.\u201d Physical Review Materials 10, L050401 (2026). https:\/\/doi.org\/10.1103\/p39r-gstw<\/a><\/p>\n

C. L. Ragle, J. E. Buchner, I-H. Lee, Y. Kim, B-I. Noh, S. Dixit, J. Matson, J. Li, S. Dai, J. H. Edgar, S-H. Oh, L. E. Buchanan, J. D. Caldwell, \u201cTuning Vibrational Coupling Strength Between Hyperbolic Media and Organic Molecules.\u201d Nanophotonics <\/em>15<\/strong>, e70051 (2026). https:\/\/doi.org\/10.1002\/nap2.70051<\/a><\/p>\n

E. Bartelsen<\/em>, R. Nolen<\/em>, M. He<\/em>, R. Spangler, K. Diaz-Granados<\/em>, J-P. Maria, J. D. Caldwell<\/strong>, \u201cMulti-resonant non-dispersive infrared gas sensing: breaking the selectivity and sensitivity tradeoff.”\u00a0ACS Photonics <\/em>13<\/strong>, 1854-1862 (2026). https:\/\/doi.org\/10.1021\/acsphotonics.5c02787<\/a><\/p>\n

N.S. Mueller, A.P. Fellows, A.E. Naclerio, D. Bal\u00e1\u017e, B. John, K.G. Hubmann, R.A. Kowalski<\/em>,<\/span>\u00a0<\/span><\/p>\n

J.D. Caldwell, K. Reuter, H. Heenen, C. Scheurer, M. Wolf, P.R. Kidambi, M. Thaemer, A.<\/span>\u00a0<\/span><\/p>\n

Paarmann, \u201cFull crystallographic imaging of monolayer h-BN using phase-resolved sum-<\/span>\u00a0<\/span><\/p>\n

frequency microscopy.\u201d Advanced Materials <\/i>38<\/b>, e10124 (2026).\u00a0<\/span><\/p>\n

https:\/\/doi.org\/10.1002\/adma.202510124<\/span>\u00a0<\/span><\/p>\n

G. Carini, A. Ardenghi, S. Dixit<\/strong>, M. Pradhan, E.\u00a0Gelzinytn, M. Obst<\/strong>,\u00a0A.\u00a0S. Senarath<\/em>,\u00a0N.\u00a0S. Mueller, G. \u00a0Alvarez-Perez, K. Diaz-Granados<\/em>, R. A.\u00a0Kowalski<\/em>,\u00a0R.\u00a0Niemann<\/strong>, F. G. Kaps, J. Wetzel,\u00a0R.\u00a0B.\u00a0Iyer, P. Mazzolini, J.\u00a0M. Klopf, J. Margraf, O. Bierwagen, M. Wolf,\u00a0K.\u00a0Reuter, L. Eng, S. Kehr, C. Carbogno, T. G. Folland,\u00a0J. D. Caldwell<\/strong>, M. R. Wagner, A. Paarmann, \u201cSpectral tuning of hyperbolic shear polaritons in monoclinic gallium Oxide via isotopic substitution.\u201d Advanced Materials<\/em> 38<\/strong>, published online https:\/\/doi.org\/10.1002\/adma.202514561<\/a> (2026).<\/p>\n

2025<\/strong><\/p>\n

Z. Pan, X. Zhang<\/em>, Z. Lai, M. Obst<\/strong>, J. D. Caldwell<\/strong>, D. Li, \u201cDifferential calorimetric measurement of thermal emissionfrom individual nanostructures.\u201d Review of Scientific Instruments<\/em> 96<\/strong>, 124902 (2025). https:\/\/doi.org\/10.1063\/5.0294041<\/a><\/p>\n

I-H. Lee, F. de Leon-Perez, D. Yoo, E-H. Ryu, T. Low, D. Caldwell<\/strong>, L. Martin-Moreno, S-H. Oh, \u201cUltrastrong Plasmon\u2212Phonon Coupling Enabled by Acoustic Graphene Plasmons.\u201d Nano Letters<\/em>, published online https:\/\/doi.org\/10.1021\/acs.nanolett.5c04495<\/a> (2025).<\/p>\n

C. Whittier, T. Casagrande, M. Chalifour, K. Kelley, M. J. Tolchin, M. He<\/em>, J. R. Nolen<\/em>, J-P. Maria, J. D. Caldwell<\/strong>, D. J. Masiello, N. D. Bassim, M. J. Lagos, \u201cSpatial Distribution and Sensitivity of Localized Plasmon Modes in Individual Infrared SPP\/ENZ Resonators Probed via EELS.\u201d ACS Photonics, published online https:\/\/doi.org\/10.1021\/acsphotonics.5c02382<\/a> (2025).<\/p>\n

N. S. Mueller, A.P. Fellows, A.E. Naclerio, D. Bal\u00e1\u017e, B. John, K.G. Hubmann, R.A. Kowalski<\/em>, J.D. Caldwell<\/strong>, K. Reuter, H. Heenen, C. Scheurer, M. Wolf, P.R. Kidambi, M. Thaemer, A. Paarmann, \u201cFull crystallographic imaging of monolayer h-BN using phase-resolved sum-frequency microscopy.\u201d Advanced Materials<\/em>, published online https:\/\/doi.org\/10.1002\/adma.202510124<\/a> (2025).<\/p>\n

G. Zhu, I. Hong, K. Li, T. Anyika, M. T. Ugwu, J. R. Nolen, M. He, J. D. Caldwell, J. C. Ndukaife, \u201cEngineering Thermal Emission with Enhanced Emissivity and Quality Factor Using Bound States in the Continuum and Electromagnetically Induced Absorption.\u201d Advanced Optical Materials<\/em>, published online https:\/\/doi.org\/10.1002\/adom.202501257 (2025).<\/p>\n

A. A. Shults, A. C. Koziel, J. D. Caldwell<\/strong>, J. E. Macdonald, \u201cDecomposition of Selenourea in Various Solvents: Red versus Gray Selenium in the Synthesis of Iron Selenide Nanoparticles.\u201d Chemisty of Materials <\/em>37<\/strong>, 4282-4290 (2025).<\/p>\n

R. A. Kowalski<\/em>, N.S. Mueller, G. Alvarez-Perez, M. Obst, K. Diaz-Granados<\/em>, G. Carini, A. Senarath<\/em>, S. Dixit<\/strong>, R. Niemann<\/strong>, R.B. Iyer, F.G. Kaps, J. Wetzel, J.M. Klopf, I.I. Kravchenko, M. Wolf, T.G. Folland, L.M. Eng, S.C. Kehr, P. Alonso-Gonzalez, A. Paarmann, J.D. Caldwell,<\/strong> \u201cUltraconfined Terahertz Phonon Polaritons in Hafnium Dichalcogenides\u201d, Nature Materials<\/em> 24<\/strong>, 1735-1741 (2025).<\/p>\n

J. D. Caldwell,<\/strong> A. Paarmann, \u201cTerahertz Light Confined to the Nanoscale with Hafnium Dichalcogenides\u201d, Nature Materials<\/em> 24<\/strong>, 1688-1689 (2025).<\/p>\n

P. Diaz-Nunez, C. Lanza, Z. Wang, V. G. Kravets, J. Duam, J. Alvarez-Cuervo, A. T. Martin-Luengo, A. N. Grigorenko, Q. Yang, A. Paarmann, J. D. Caldwell<\/strong>, P. Alonso-Gonzalez, A. Mischenko, \u201cVisualization of topological shear polaritons in gypsum thin films.\u201d Science Advances<\/em> 11<\/strong>, 2375-2548 (2025).<\/p>\n

Javier Garc\u00eda de Abajo, D. N. Basov, F. H. L. Koppens, et al., \u201cRoadmap for Photonics with 2D Materials.\u201d ACS Photonics <\/em>12<\/strong>, 3961-4095 (2025). Section 25: G. \u00c1lvarez-P\u00e9rez, J. Duan, A. Al\u00f9, T. Low, L. Mart\u00edn-Moreno, A. Paarmann, J. D. Caldwell<\/strong>, A. Y. Nikitin, P. Alonso-Gonz\u00e1lez, \u201cTwistoptics: Controlling light at the nanoscale with twisted 2D layer.\u201d Section 26:N. S. Mueller, A. Paarmann, P. Alonso-Gonz\u00e1lez, A. Y. Nikitin, A. Al\u00fa, T. Low, V. Volkov, L. Mart\u00edn-Moreno, J. D. Caldwell<\/strong>, \u201cOptical Anistropy of 2D van der Waals materials.\u201d<\/p>\n

G.A. Newsome, <\/span>K. Diaz-Granados<\/span><\/i>, K. Sam, <\/span>J.D. Caldwell, E.R. Birdsall, \u201cPyrolysis and Thermal Extraction Mass Spectrometry of Polymeric Materials with Suction-Driven, Real-Time Chemical Ionization Sources and Rapid Polarity Switching\u201d J<\/span>ournal of Mass Spectrometry<\/span>,\u00a0<\/span>518<\/strong>, 117514 (2025).<\/p>\n

A. S. Senarath<\/em>, S. Islam, J. R. McBride, O. Meilander, A. Sengupta, H. Pandey, T. Anderson, A. Jacobs, R. Kaplar, M.W. McCurdy, R. A. Reed, S. T. Pantelides, M. A. Ebrish, D. M. Fleetwood, J. D. Caldwell, R. D. Schrimpf, \u201cHeavy Ion-Induced Single-Event Leakage Current and Burnout in Homojunction GaN PIN Diodes.\u201d IEEE transactions on Nuclear Science <\/em>72<\/strong>, <\/em>2377-2385 (2025). doi: 10.1109\/TNS.2025.3556730 (2025).<\/p>\n

K. S. Diaz-Granados, L. J. Bergemann, M. Ballard, G. A. Newsome, G. M. Kavich, J. D. Caldwell, T. P. Cleland, \u201cInvestigation of Natural Dyes and Taxonomic Identification of Fibers Used in Chancay Textiles by Vibrational Spectroscopy and Mass Spectrometry.\u201d Journal of Proteome Research<\/em> 24<\/strong>, 710-728 (2025). https:\/\/doi.org\/10.1021\/acs.jproteome.4c00809<\/a><\/p>\n

W. Hutchins, J. A. Tomko, D. M. Hirt, S. Zare, J. R. Matson, K. Diaz-Granados, M. He, T. Pfeifer, J. Li, J. Edgar, J-P. Maria, J. D. Caldwell, P. E. Hopkins. \u201cUltrafast evanescent heat transfer across solid interfaces via hyperbolic phonon polaritons in hexagonal boron nitride.\u201d Nature Materials <\/em>24<\/strong>, 698-706 (2025). https:\/\/doi.org\/10.1038\/s41563-025-02154-5<\/a> (2025).<\/p>\n

2024<\/strong><\/p>\n

A. J. Cleri, M. He, M. J. Tolchin, C. Gubbin, E. Lang, K. Hattar, S. De Liberato, J. D. Caldwell, J-P. Maria, \u201cLaterally Modulating Carrier Concentration by Ion Irradiation in CdO Thin Films for Mid-IR Plasmonics.\u201d Advanced Optical Materials, published online, 2401009 (2024).
\nhttps:\/\/doi.org\/10.1002\/adom.202401009<\/a><\/p>\n

E. R. Hoglund, H. A. Walker, Md. K. Hussain, D.-L. Bao, H. Ni, A. Mamun, J. Baxter, J. D. Caldwell, A. Khan, S. T. Pantelides, P. E. Hopkins, J. A. Hachtel, \u201cNon-equivalent Atomic Vibrations at Interfaces in a Polar Superlattice.\u201d Advanced Materials 36, 2402925 (2024).<\/p>\n

C. Su, E. Janzen, M. He, C. Li, A. Zettl, J. D. Caldwell, J. H. Edgar, I. Aharonovich, \u201cFundamentals and emerging optical applications of hexagonal boron nitride: a tutorial.\u201d Advanced Optics 16, 229-346 (2024).
\nhttps:\/\/doi.org\/10.1364\/AOP.502922<\/a><\/p>\n

R. Niemann, N. S. Mueller, S. Wasserroth, G. Lu, M. Wolf, J. D. Caldwell, A. Paarmann, \u201cSpectroscopic and Interferometric Sum-Frequency Imaging of Strongly Coupled Phonon Polaritons in SiC Metasurfaces.\u201d Advanced Materials 36, 2312507 (2024).<\/p>\n

K. Diaz-Granados, R. Price, J. R. McBride, D. Moffett, G. M. Kavich, J. D. Caldwell, \u201cIdentification of Surface Coatings on Central African Wooden Sculptures Using Nano-FTIR Spectroscopy.\u201d ACS Photonics, (2024).
\nhttps:\/\/doi.org\/10.1021\/acsphotonics.4c00320<\/a><\/p>\n

N.R. Sahoo, B. Kumar, S.S. J. Prasath, S. Dixit, R. Kumar, A. Bapat, P. Sharma, J. D. Caldwell, A. Kumar, \u201cPolaritons in Photonic Hypercrystals of van der Waals Materials.\u201d Advanced Functional Materials 34, 2316863 (2024).<\/p>\n

J. \u00c1lvarez-Cuervo, M. Obst, S. Dixi, G. Carini, A. I. F. Tresguerres-Mata, C. Lanza, E. Ter\u00e1n-Garc\u00eda, G. \u00c1lvarez-P\u00e9rez, L.F. \u00c1lvarez-Tomillo, K. Diaz-Granados, R. Kowalski, A. S. Senerath, N. S. Mueller, L. Herrer, J.M. De Teresa, S. Wasserroth, J. M. Klopf, T. Beechem, M. Wolf, L.M. Eng, T.G. Folland, A. Tarazaga Mart\u00edn-Luengo, J. Mart\u00edn-S\u00e1nchez, S.C. Kehr, A.Y. Nikitin, J.D. Caldwell, P. Alonso-Gonz\u00e1lez1, A. Paarmann, \u201cUnidirectional Ray Polaritons in Twisted Asymmetric Stacks.\u201d Nature Communications 15, 9042 (2024).
\nhttps:\/\/doi.org\/10.1038\/s41467-024-52750-3<\/a><\/p>\n

D. Li, Z. Pan, J.D. Caldwell, \u201cPhonon Polariton-mediated Heat Conduction – Perspectives from Recent Progress.\u201d Journal of Materials Research, published online (2024).
\nhttps:\/\/doi.org\/10.1557\/s43578-024-01470-x<\/a><\/p>\n

K. S. Diaz-Granados, L. J. Bergemann, M. Ballard, G. A. Newsome, G. M. Kavich,
\nJ. D. Caldwell, T. P. Cleland, \u201cInvestigation of Natural Dyes and Taxonomic Identification of Fibers Used in Chancay Textiles by Vibrational Spectroscopy and Mass Spectrometry.\u201d Journal of Proteome Research, Accepted 2024.
\nhttps:\/\/doi.org\/10.1021\/acs.jproteome.4c00809<\/a><\/p>\n

S. G. Criswell, N. A. Mahadik, J. C. Gallagher, J. Barnett, L. Kim, M. Ghorbani, B. Kamaliya, N. D. Bassim, T. Tauber, J. D. Caldwell, \u201cNanoscale Infrared Spectroscopic Characterization of Extended Defects in 4H-Silicon Carbide.\u201d Nano Letters<\/em> 24<\/strong>, 114-121 (2024).<\/p>\n

H. Wang, A. Kumar, S. Dai, X. Lin, Z. Jacob, S-H. Oh, V. Menon, E. Narimanov, Y. D. Kim, J-P. Wang, P. Avouris, L. M. Moreno, J. D. Caldwell, T. Low, \u201cPlanar hyperbolic polaritons in 2D van der Waals materials.\u201d Nature Communications<\/em> 15<\/strong>, 69 (2024).<\/p>\n

S. Yang, M. He, C. Hong, J. Norlander, J-P. Maria, J. D. Caldwell, J. C. Ndukaife, \u201cSingle-peak and narrow-band mid-infrared thermal emitters driven by mirror-coupled plasmonic quasi-BIC metasurfaces.\u201d Optica<\/em> 11<\/strong>, 305-314 (2024).<\/p>\n

A. I. F. Tresguerres-Mata, C. Lanza, J. Taboada-Gutierrez, J. R. Matson, G. Alvarez-Perez, M. Isobe, A. T. Martin-Luengo, J. Duan, S. Partel, M. Velez, J. Martin-Sanchez, A. Y. Nikitin, J. D. Caldwell, P. Alonso-Gonzalez, \u201cObservation of naturally canalized phonon polaritons in LiV2<\/sub>O5 <\/sub>thin layers.\u201d Nature Communications<\/em> 15<\/strong>, 2696 (2024).<\/p>\n

A. Senarath, S. Islam, A. Sengupta, M. W. McCurdy. T. Anderson, A. Jacobs, R. Kaplar, D. R. Ball, E. X. Zhang, S. T. Pantelides, R. A. Reed, M. A. Ebrish, D. M. Fleetwood, J. D. Caldwell, R. D. Schrimpf, \u201cSingle Event Burnout in Homojunction GaN PiN Diodes with Hybird Edge Termination Design.\u201d Applied Physics Letters <\/em>124<\/strong>, 132101 (2024).<\/p>\n

2023<\/strong><\/p>\n

G. Hu, W. Ma, D. Hu, J. Wu, C. Zheng, K. Liu, X. Zhang, X. Ni, J. Chhen, Q. Dai, J. D. Caldwell, A. Paarmann, A. Al\u00f9, P. Li, C-W. Qiu, \u201cReal-space nanoimaging of hyperbolic shear polaritons in a monoclinic crystal.\u201d Nature Nanotechnology<\/em> 18<\/strong>, 64\u201370 (2023).<\/p>\n

M. He, J. R. Nolen, J. Nordlander, A. Cleri, G. Lu, T. Arnaud, N. S. McIlwaine, K. Diaz-Granados, E. Janzen, T. G. Folland, J. H. Edgar, J-P. Maria, J. D. Caldwell, “Coupled Tamm Phonon and Plasmon Polaritons for Designer Planar Multiresonance Absorbers.” Advanced Materials<\/em> 35 <\/strong>(20), 2209909 (2023).<\/p>\n

M. He, J. R. Matson, M. Yu, A. Cleri, S. S. Sunku, E. Janzen, S. Mastel, T. G. Folland, J. H. Edgar, D. N. Basov, J-P. Maria, S. Law, J. D. Caldwell, \u201cPolariton design and modulation via van der Waals\/doped semiconductor heterostructures.\u201d Nature communications<\/em> 14<\/strong> (1), 7965 (2023).<\/p>\n

A. Giri, S. G. Walton, J. Tomko, N. Bhatt, M. J. Johnson, D. R. Boris, G. Lu, J. D. Caldwell, O. V. Prezhdo, P. E. Hopkins, “Ultrafast and Nanoscale Energy Transduction Mechanisms and Coupled Thermal Transport across Interfaces.” ACS nano<\/em> 17<\/strong> (15), 14253-14282 (2023).<\/p>\n

K. Diaz-Granados, W. Ma, G. Lu, J. Matson, P. Li, J. D. Caldwell, “Tailored thermal emission in bulk calcite through optic axis reorientation.” Nanophotonics<\/em> 12<\/strong> (14), 2929-2936 (2023).<\/p>\n

G. Lu, Z. Pan, C. R. Gubbin, R. A. Kowalski, S. De Liberato, D. Li, J. D. Caldwell, “Launching and manipulation of higher\u2010order in\u2010plane hyperbolic phonon polaritons in low\u2010dimensional heterostructures.” Advanced Materials<\/em> 35<\/strong> 2300301 (2023).<\/p>\n

A. A. Shults, G. Lu, J. D. Caldwell, J. E. Macdonald, \u201cRole of carboxylates in the phase termination of metal sulfide nanoparticles,\u201d Nanoscale Horizons<\/em> 8<\/strong>, 1386-1394 (2023). – 2024\u00a0Nanoscale Horizons<\/i>\u00a0HOT article<\/a><\/b>.<\/span><\/p>\n

W. Huang, T. G. Folland, F. Sun, Z. Zhang, N. Xu, Q. Xing, J. Jiang, J. D. Caldwell, H. Yan, S. Deng, \u201cIn-plane hyperbolic polariton tuners in terahertz and long-wave infrared regimes,\u201d Nature Communications<\/em> 14<\/strong>, 2716 (2023).<\/p>\n

J. Matson, S. Wasserroth, X. Ni, M. Obst, K. Diaz-Granados, G. Carini, E. M. Renzi, E. Galiffi, T. G. Folland, L. M. Eng, J. M. Klopf, S. Mastel, S, Armster, V. Gambin, M. Wolf, S. C. Kehr, A. Al\u00f9, A. Paarmann, J. D. Caldwell, \u201cControlling the propagation asymmetry of hyperbolic shear polaritons in beta-gallium oxide,\u201d Nature Communications<\/em> 14<\/strong>, 5240 (2023).<\/p>\n

A. J. Cleri, J. R. Nolen, K. G. Wirth, M. He, E. L. Runnerstrom, K. P. Kelley, J. Nordlander, T. Taubner, T. G. Folland, J-P. Maria, J. D. Caldwell, \u201cTunable, Homoepitaxial Hyperbolic Metamaterials Enabled by High Mobility CdO,\u201d Advnaces Optical Materials<\/em> 11<\/strong>, 2202137 (2023).<\/p>\n

J. Liang, K. Ma, X. Zhao, G. Lu, J. Riffle, C. M. Andrei, C. Dong, T. Furkan, S. Rajabpour, R. R. Prabhakar, J. A. Robinson, V. Magdaleno, Jr., Q. T. Trinh, J. W. Ager, M. Salmeron, S. Aloni, J. D. Caldwell, S. Hollen, H. A. Bechtel, N. D. Bassim, M. P. Sherburne, Z. Y. Al Balushi, “Elucidating the Mechanism of Large Phosphate Molecule Intercalation Through Graphene-Substrate Heterointerfaces.” ACS Applied Materials & Interfaces<\/em> 15 <\/strong>(40), 47649-47660 (2023).<\/p>\n

Z. Pan, G. Lu, X. Li, J. R. McBride, R. Juneja, M. Long, L. Lindsay, J. D. Caldwell, D. Li, “Remarkable heat conduction mediated by non-equilibrium phonon polaritons.” Nature<\/em> 623<\/strong>, 307-312 (2023).<\/p>\n

M. He, L. Hoogendoorn, S. Dixit, Z. Pan, G. Lu, K. Diaz-Granados, D. Li, J. D. Caldwell, “Guided Polaritons along the Forbidden Direction in MoO3 with Geometrical Confinement.” Nano Letters<\/em>, 23<\/strong> (11), 5035-5041 (2023).<\/p>\n

J. R. Matson, Md N. Alam, G. Varnavides, P. Sohr, S. Knight, V. Darakchieva, M. Stokey, M. Schubert, A. Said, T. Beechem, P. Narang, S. Law, J, D. Caldwell, \u201cThe Role of Optical Phonon Confinement in The Infrared Dielectric Response of III-V Superlattices.\u201d Advanced Materials<\/em> 36<\/strong>, 2305106 (2023).<\/p>\n

<\/div>\n
2022<\/strong><\/div>\n

Kowalski, R. A.<\/span>,\u00a0Nolen, J. R.<\/span>,\u00a0Varnavides, G.<\/span>,\u00a0Silva, S. M.<\/span>,\u00a0Allen, J. E.<\/span>,\u00a0Ciccarino, C. J.<\/span>,\u00a0Juraschek, D. M.<\/span>,\u00a0Law, S.<\/span>,\u00a0Narang, P.<\/span>,\u00a0Caldwell, J. D.<\/span>,\u00a0Mid- to Far-Infrared Anisotropic Dielectric Function of HfS2<\/sub>\u00a0and HfSe2<\/sub><\/span>.\u00a0Adv. Optical Mater<\/i>\u00a0(2022).<\/span><\/p>\n

S. Yang, M. He, C. Hong, J. D. Caldwell,\u00a0 J. C. Ndukaife. \u201cEngineering Electromagnetic Field Distribution and Resonance Quality Factor Using Slotted Quasi-BIC Metasurfaces\u201d,\u00a0 Nano Letters\u00a0(2022).<\/p>\n

H. Zheng, M. He, Y. Zhou, I. I. Kravchenko, J. D. Caldwell, J. G. Valentine. \u201cCompound Meta-Optics for Complete and Loss-Less Field Control\u201d, ACS nano\u00a0(2022).
\nM. He, T.G. Folland, P. Alonso-Gonzalez, S. De Liberato, A. Paarmann, J.D. Caldwell, \u201cExploiting Reductions in Material Symmetry and Hybridization for Infrared Nanophotonics\u201d, ACS Photonics (2022).<\/p>\n

N. Passler, X. Ni, G. Hu, J.R. Matson, G. Carini, M. Wolf, M. Schubert, A. Alu, J.D. Caldwell, T.G. Folland, A. Paarmann, \u201cHyperbolic Shear Polaritons in Low-Symmetry Crystals\u201d, Nature, 602, pages595\u2013600 (2022).<\/p>\n

E.R. Hoglund, D.-L. Bao, A. O\u2019Hara, J.A. Hachtel, Z.T. Piontkowski, J.R. Matson, A.K. Yadav, R.C. Haisimaier, R. Engel-Herbert, J.F. Ihlefeld, J. Ravichandran, R. Ramesh, J.D. Caldwell, T.E. Beechem, S.T. Pantelides, P.E. Hopkins, J.M. Howe, \u201cNanoscale Phonon Spectroscopy Reveals Emergent Interface Vibrational Structure of Superlattices\u201d, Nature, (2021).<\/p>\n

2021<\/strong><\/p>\n

G. Lu, C.R. Gubbin, J.R. Nolen, T.G. Folland, K. Diaz-Granados, I.I. Kravchenko, J. Spencer, M.J. Tadjer, O.J. Glembocki, S. De Liberato, J.D. Caldwell, \u201cCollective Phonon-Polaritonic Modes in SiC Subarrays\u201d ACS Nano, doi.org\/10\/1021\/acsnano.1c08557 (2021).<\/p>\n

M. He, J.R. Nolen, J. Nordlander, A. Cleri, N.S. McIlwaine, Y. Tang, G. Lu, T.G. Folland, B.A. Landman, J.P. Maria, J.D. Caldwell, \u201cDeterministic Inverse Design of Lithography-Free, Wavelength-Selective Tamm Plasmon Thermal Emitters\u201d, Nature Materials, 20 1663-1669 (2021).<\/p>\n

G. Pavlidis, J.J. Schwartz, J.R. Matson, T.G. Folland, S. Liu, J.H. Edgar, J.D. Caldwell, A. Centrone, \u201cExperimental Confirmation of Hyperbolic Phonon Polaritons Long-Lifetimes in Monoisotopic (10B) Hexagonal Boron Nitride at Room Temperature\u201d, APL Materials, 9, 091109 (2021).<\/p>\n

M. He, G.R.S. Iyer, S. Aarav, S.S. Sunku, A.J. Giles, T.G. Folland, N. Sharac, X. Sun, J.R. Matson, S. Liu, J.H. Edgar, J.W. Fleischer, D.N. Basov, J.D. Caldwell, \u201cUltra-high-resolution, Label-free Hyperlens Imaging in the Mid-IR\u201d Nano Letters, 21(19), 7921-7928 (2021).<\/p>\n

P. Rufangura, I. Khodasevych, A. Agrawal, M. Bosi, T.G. Folland, J.D. Caldwell, F. Iacopi, \u201cEnhanced Absorption with Graphene-Coated Silicon Carbide Nanowires for Mid-Infrared Nanophotonics\u201d, Nanomaterials 11(9), 2339 (2021).<\/p>\n

G.X. Ni, A.S. McLeod, Z. Sun, J.R. Matson, C.F.B. Lo, D.A. Rhodes, F.L. Ruta, S.L. Moore, R.A. Vitalone, R. Cusco, L. Artus, L. Xiong, C.R. Dean, J.C. Hone, A.J. Mills, M.M. Fogler, J.H. Edgar, J.D. Caldwell, D.N. Basov, \u201cLong-lived Phonon Polaritons in Hyperbolic Materials\u201d Nano Letters, 21, 5767-5773 (2021).<\/p>\n

M. He, L. Lindsay, T.G. Folland, T.E. Beechem, J.R. Matson, K. Watanabe, A. Zavalin, A. Ueda, W.E. Collins, T. Taniguchi, J.D. Caldwell, \u201cPhonon Engineering of Boron Nitride via Isotopic Enrichment\u201d Journal of Materials Research, 36, 4394-4403 (2021).<\/p>\n

G. Lu, M. Tadjer, J.D. Caldwell, T.G. Folland, \u201cSpatial and spectral engineering of superstructure grating thermal emitters\u201d APL, 118, 141102 (2021).<\/p>\n

W.C. Huang, F.S. Sun, Z.B. Zheng, T.G. Folland, X.X. Chen, H.Z. Liao, N.S. Xu, J.D. Caldwell, H.J. Chen, S.Z. Deng, \u201cvan der Waals phonon polariton microstructures for configurable infrared electromagnetic field localizations\u201d Adv. Sci., 8(13), 2004872 (2021).<\/p>\n

G. Lu, C.R. Gubbin, J.R. Nolen, T.G. Folland, M.J. Tadjer, S. De Liberato, J.D. Caldwell, \u201cEngineering the Spectral and Spatial Dispersion of Thermal Emission through Polariton-Phonon Strong Coupling\u201d, Nano Letters, 21, 1831-1838 (2021).<\/p>\n

M. He, S.I. Halimi, T.G. Folland, S.S. Sunku, S. Liu, J.H. Edgar, D.N Basov, S.M. Weiss, J.D. Caldwell, \u201cGuided Mid-IR and Near-IR Light within a Hybrid Hyperbolic-Material\/Silicon Waveguide Heterostructure\u201d, Advanced Materials, 33(11) 2004305 (2021).<\/p>\n

A. Cleri, J. Tomko, K. Quiambao-Tomko, M.V. Imperatore, Y. Zhu, J.R. Nolen, J. Nordlander, J.D. Caldwell, Z. Mao, N.C. Giebink, K.P. Kelley, E. Runnerstrom, P. Hopkins, J.P. Maria, \u201cMid-wave to Near-IR Epsilon-Near-Zero Plasmon Modes in In-doped CdO\u201d, Phys. Rev. Mat., 5 035202 (2021).<\/p>\n

A. Livingood, J.R. Nolen, T.G. Folland, L. Potechin, S. Criswell, J.P. Maria, C. Shelton, E. Sachet, J.D. Caldwell, \u201cFilterless Non-Dispersive Infrared Sensing using Cadmium Oxide Narrowband Infrared Emitting Metamaterials (NIREMs)\u201d, ACS Photonics, 8, 472-480 (2021).<\/p>\n

D. Yoo, F. de Leon-Perez, I.-H. Lee, D.A. Mohr, M. Pelton, J.D. Caldwell, L. Martin-Moreno, S.-H. Oh, \u201cUltrastrong plasmon-phonon coupling via epsilon-near-zero nanocavities\u201d, Nature Photonics, 15, 125-130 (2021).<\/p>\n

J.A. Tomko, E.L. Runnerstrom, Y.-S. Wang, J.R. Nolen, D.H. Olson, K.P. Kelley, A. Cleri, J. Nordlander, J.D. Caldwell, O.V. Prezhdo, J.P. Maria, P.E. Hopkins, \u201cLong-lived modulation of plasmonic absorption by ballistic thermal injection\u201d, Nature Nano, 16, 47-51 (2021).<\/p>\n

2020<\/strong><\/p>\n

Fali, S. Gamage, M. Howard, T.G. Folland, T. Tiwald, K. Bolotin, J.D. Caldwell, Y. Abate, \u201cNanoscale Spectroscopy of Dielectric Properties of Mica\u201d, ACS Photonics, in press (2020).<\/p>\n

D. Yoo, F. de Leon-Perez, I.-H. Lee, D.A. Mohr, M. Pelton, J.D. Caldwell, L. Martin-Moreno, S.-H. Oh, \u201cUltrastrong plasmon-phonon coupling via epsilon-near-zero nanocavities\u201d, Nature Photonics, https:\/\/doi.org\/10.1038\/s41566-020-00731-5 (2020).<\/a><\/p>\n

J. A. Tomko, E.L. Runnerstrom, Y.-S. Wang, J.R. Nolen, D.H. Olson, K.P. Kelley, A. Cleri, J. Nordlander, J.D. Caldwell, O.V. Prezhdo, J.P. Maria, P.E. Hopkins, \u201cLong-lived modulation of plasmonic absorption by ballistic thermal injection\u201d, Nature Nano, https:\/\/doi.org\/10.1038\/s41565-020-00794-z (2020).<\/a><\/p>\n

S.A<\/a>. Dereshgi, T.G. Folland, A. Murthy, X. Song, I. Tanriover, V.P. Dravid, J.D. Caldwell, K. Aydin, \u201cLithography-free, planar IR polarization filters and converters via biaxial phonons in a-MoO3<\/sub> flakes integrated into Fabry-Perot cavities\u201d, Nat. Comm. 11(1) 1-9 (2020).<\/a><\/p>\n

I.H. Lee, M. He, X. Zhang, Y. Luo, S. Liu, J.H. Edgar, K. Wang, Ph. Avouris, T. Low, J.D. Caldwell, S.H. Oh, \u201cImage Polaritons in Boron Nitride for Extreme Polariton Confinement with Low Losses\u201d, Nature Comm, 11, 3649 (2020).<\/a><\/p>\n

P. Rufangura, T.G. Folland, A. Agrawal, J. Caldwell, F. Iacopi, \u201cTowards Low-Loss on-chip nanophotonics with graphene and silicon carbide: a review\u201d J. Phys Mater., 3, 032005 (2020).<\/a><\/p>\n

G. Ramer, M. Tuteja, J.R. Matson, M. Davanco, T.G. Folland, A. Kretinin, T. Taniguchi, K. Watanabe, K.S. Novoselov, J.D. Caldwell, A. Centrone, \u201cHigh-Q dark hyperbolic phonon-polaritons in hexagonal boron nitride nanostructures\u201d, Nanophotonics, 9(6), 1457 (2020).<\/a><\/p>\n

G. Lu, J.R. Nolen, T.G. Folland, M. Tadjer, D.G. Walker, J.D. Caldwell, \u201cNarrowband Polaritonic Thermal Emitters Driven by Waste-Heat\u201d ACS Omega\u00a05(19), 10900-10908, DOI: 10.1021\/acsomega.0c00600 (2020). \u2013 Supplemental Cover May 2020 Edition ACS Omega<\/strong><\/a><\/p>\n

Alvarez-Perez, T.G. Folland, I. Errea, J. Taboada-Gutierrez, J. Duan, J. Martin-Sanchez, A.I.F. Tresguerres-Mata, J.R. Matson, A. Bylinkin, M. He, W. Ma, Q. Bao, J.D. Caldwell, A.Y. Nikitin, P. Alonso-Gonzalez, \u201cInfrared Permittivity of the biaxial van der Waals semiconductor \u03b1-MoO3<\/sub> from near- and far-field correlative studies\u201d, Advanced Materials, 32, 1908176 doi.org\/10.1002\/adma.201908176 (2020). \u2013 Back Cover July 2020 Edition Advanced Material<\/strong><\/a><\/p>\n

J.R. Nolen, E.L. Runnerstrom, K.P. Kelley, T.S. Luk, T.G. Folland, J.P. Maria, J.D. Caldwell, \u201cUltraviolet to Far-Infrared Optical Properties of n-doped Cadmium Oxide Thin Films\u201d, Physical Review Materials, 4, 025202 (2020).<\/a><\/p>\n

T.G. Folland, G. Lu, A. Bruncz, J.R. Nolen, M. Tadjer, J.D. Caldwell, \u201cVibrational Coupling to Epsilon-Near-Zero Waveguide Modes\u201d ACS Photonics, 7(3) 614-621 (2020).<\/a><\/p>\n

A. Dunkelberger, D. Ratchford, A.B. Grafton, V.M. Breslin, E.S. Ryland, D.S. Katzer, K.P. Fears, R. J. Weiblen, I. Vurgaftman, A.J. Giles, C.T. Ellis, J.G. Tischler, J.D. Caldwell, J.C. Owrutsky, \u201cUltrafast Active Tuning of the Berreman Mode\u201d, ACS Photonics., 7(1), 279-287 (2020).<\/a><\/p>\n

B. Hauer, C.E. Marvinney, M. Lewin, N. Mahadik, J. Hite, N.D. Bassim, A.J. Giles, R.E. Stahlbush, J.D. Caldwell, T. Taubner, \u201cExploiting phonon-resonant near-field interactions for the nanoscale investigation of extended defects\u201d, Adv. Func. Materials, 30, 1907357\u00a0(2020).<\/a><\/p>\n

A. Howes, J.R. Nolen, J.D. Caldwell and J. Valentine: Near-Unity and Narrowband Thermal Emissivity in Balanced Dielectric Metasurfaces. Advanced Optical Materials 8, 1901470 (2020).<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

2026 Richarda Niemann, Doroth\u00e9e S. Mader, Gonzalo \u00c1lvarez-P\u00e9rez, Ana I. F. Tresguerres-Mata, Aitana Tarazaga Mart\u00edn-Luengo, Stefan Partel, Joshua D. Caldwell, Niclas S. Mueller, Martin Wolf, Javier Mart\u00edn-S\u00e1nchez, Pablo Alonso-Gonz\u00e1lez, and Alexander Paarmann, “In-plane vector-field imaging of propagating surface phonon polaritons [Invited],” Opt. Mater. Express 16, 3483-3495 (2026). https:\/\/doi.org\/10.1364\/OME.609623.\u00a0 \u00a0Awarded EDITOR\u2019S PICK M. T. Long, H….<\/p>\n","protected":false},"author":10000,"featured_media":0,"parent":6,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"class_list":["post-1067","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/pages\/1067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/users\/10000"}],"replies":[{"embeddable":true,"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/comments?post=1067"}],"version-history":[{"count":10,"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/pages\/1067\/revisions"}],"predecessor-version":[{"id":1292,"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/pages\/1067\/revisions\/1292"}],"up":[{"embeddable":true,"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/pages\/6"}],"wp:attachment":[{"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/media?parent=1067"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/my.vanderbilt.edu\/caldwellgroup\/wp-json\/wp\/v2\/tags?post=1067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}