Results 231 to 240 of about 295,900 (371)

Size Effect on Photothermal Heating Ability of Gold Bipyramids

open access: yesAdvanced Optical Materials, EarlyView.
Gold bipyramids with identical spectral characteristics exhibits opposite volume‐dependent photo‐thermal heating at single‐particle versus collective scales. The thermal energy can be used to generate mechanical work by powering Stirling engine. Abstract Gold nanoparticles (AuNPs) exhibit photothermal properties that are fundamental to biomedical and ...
Aadesh Mohan Naik   +7 more
wiley   +1 more source

A Type I Hyperbolic Metamaterial Driven by Phonons on ZnO

open access: yesAdvanced Optical Materials, EarlyView.
This article reports the first realization of a phonon‐driven type I hyperbolic metamaterial with ZnO/(Zn,Mg)O heterostructures. By adjusting the Mg content and layer thickness ratio, it establishes a clear framework for achieving and tuning the type I hyperbolic region via phonon resonances.
Julia Inglés‐Cerrillo   +9 more
wiley   +1 more source

Pseudo‐Dichroism: Nanophotonic Induction of Chiroptical Activity in Symmetric Molecular Systems

open access: yesAdvanced Optical Materials, EarlyView.
By analyzing vibrational circular dichroism (VCD) spectra of chiral nanomaterials, we distinguish genuine molecular chirality (true dichroism) from measurement artifacts (pseudo dichroism) using a novel, robust framework. The spectral criteria we establish apply broadly to all chiroptical techniques in nanomaterial research, enhancing precision in ...
Victor Tabouillot   +7 more
wiley   +1 more source

PKS 1402+044 - A red object with a redshift of 3.20

open access: bronze, 1978
B. A. Peterson   +3 more
openalex   +1 more source

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