Results 171 to 180 of about 2,328 (261)

Band‐Selective, Low‐Dispersion Terahertz Attenuators Based on 3D Bulk Metamaterials Leveraging De‐latticed Cross‐Bar Resonator Ensembles

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
This paper presents 3D bulk metamaterials in which diced cross‐bar meta‐grains are randomly dispersed in a polymer matrix by molding. The de‐latticed composite provides isotropic and band‐selective THz attenuation with over tenfold dispersion suppression compared to the periodic metasurface.
Zhen Liu, Chikaho Nagashima, Yoshiaki Kanamori   +2 more
wiley   +1 more source

Structural-Material Coupling Enabling Broadband Absorption for a Graphene Aerogel All-Medium Metamaterial Absorber. [PDF]

Nanomaterials (Basel)
Yan K, Ren Y, Zhang J, Song M, Du X, Lu M, Wu D, Li Y, Yun J.   +8 more
europepmc   +1 more source

Inverse Drexhage Effect in Epsilon‐Near‐Zero Substrates

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Radiative emission of dipoles near substrates is shown to reverse between (a) perfect electric conductors and (b) epsilon‐near‐zero (ENZ) media. The schematic highlights switch from vertical to horizontal dipole dominance, governed by interference with image dipoles, leading to directional emission into the upper half‐space and enabling new strategies ...
Sandeep Kumar Chamoli, Mohamed ElKabbash
wiley   +1 more source

Accurate prediction of geometrical parameters of an ultra-broadband metamaterial absorber using machine learning. [PDF]

Sci Rep
Ahmed MR, Jyoti O, Sarkar PP, Motin MA, Habib MS, Habib MS.   +5 more
europepmc   +1 more source

Ultra‐Broadband Optical Characterization of TiO2 Nanotube Arrays Revealing Annealing‐Tunable THz Absorption

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Lithography‐free spaced TiO2 NT arrays unlock tunable broadband absorption from THz to UV. By harnessing annealing‐driven phase transitions, strong phonon–polariton resonances emerge in the 1.4–3.6 THz range, whereas high absorptance persists beyond 10 THz.
Anjali Chaudhary, Morteza Afshar, Emil J. Y. Magaway, Sunil Kumar, Ravendra Kumar Varshney, Jiří Čapek, Ivan Richter, Štěpán Kment, Miguel Navarro‐Cía, Luca Mascaretti   +9 more
wiley   +1 more source

Optimization of terahertz broadband polarization insensitive metamaterial absorber using bisecting rectangles technique based on quadratic surrogates. [PDF]

Sci Rep
Etman AS, Hameed MFO, Obayya SSA, Hammad AE.   +3 more
europepmc   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

Advanced Engineering Materials, Volume 28, Issue 15, 5 August 2026.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari, Supharoek Sornsomrit, Muhammad Ayaz Akbar, Stephan Rudykh   +3 more
wiley   +1 more source

Ultra-wideband optically transparent flexible metamaterial absorber for satellite stealth. [PDF]

Sci Rep
Zhao C, Jia M, Zhang N, Meng S, Tian Y.
europepmc   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, Volume 36, Issue 67, 20 August 2026.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Metamaterial absorber using cascaded ring resonators and optimization through machine learning for sensing applications. [PDF]

Sci Rep
Rakhshani MR, Kazemi F, Rashki M.
europepmc   +1 more source