Results 121 to 130 of about 25,300,669 (221)

Scanning‐Tip and Confocal Raman Characterization of Gold Nanoparticles as Plasmonic Structures for Molecular Sensing

Journal of Raman Spectroscopy, EarlyView.
We apply a sharp silicon tip, typically used for atomic force microscopy (AFM), as a nanoscale probe, and collect frequency‐shifted photons resulting from Raman scattering within the sharp tip. This approach allows us to map local electromagnetic fields in various plasmonic structures and study field “hotspots” with nanometer spatial resolution ...
Zhi Gao, Alexei V. Sokolov
wiley   +1 more source

JWST stellar occultation reveals unexpected changes in Chariklo's ring system. [PDF]

Sci Adv
Santos-Sanz P, Gomes-Júnior AR, Morgado BE, Kilic Y, Kalup C, Kiss C, Pereira CL, Holler BJ, Morales N, Ortiz JL, Sicardy B, Rizos JL, Stansberry J, French RG, Hammel HB, Lin ZY, Souami D, Desmars J, Milam SN, Braga-Ribas F, Assafin M, Benedetti-Rossi G, Camargo JIB, Duffard R, Rommel FL, Fernández-Valenzuela E, Pinilla-Alonso N, Vara-Lubiano M.   +27 more
europepmc   +1 more source

Tunable Terahertz Generation in Dispersion‐Engineered ZnTe Waveguides

Laser &Photonics Reviews, EarlyView.
A dispersion‐engineered Zinc Telluride (ZnTe) slab waveguide platform enables tunable and efficient guided‐wave terahertz (THz) generation through modal phase matching. By tailoring the optical and THz modal dispersion, coherent THz emission is achieved across 0.1–3 THz.
Arun Jana, Cormac McDonnell, Mai Tal, Anastasiya Reveguk, Amit Kohn, Tal Ellenbogen   +5 more
wiley   +1 more source

Editorial: Deep learning for computer vision and measurement systems. [PDF]

Front Artif Intell
Mousavirad SJ, El-Abd M, Oliva D.
europepmc   +1 more source

Wavefront Shaping for Optimal Extinction of Focused Light by Individual Nanoscatterers

Laser &Photonics Reviews, EarlyView.
Wavefront shaping enables near‐complete optical extinction by nanoscatterers separated from a planar reflector. Time‐reversed emission profiles provide optimal illumination conditions, yielding 70% extinction from a single plasmonic nanoparticle and up to 90% from sub‐wavelength nanoparticle clusters, offering a promising route to efficient in‐ and out‐
Nick Feldman, Joris Pals, Arie J. den Boef, F. Javier García de Abajo, Lyubov V. Amitonova, A. Femius Koenderink   +5 more
wiley   +1 more source

Magnetogravitationally regulated streamer accretion onto a class 0 protostellar system. [PDF]

Sci Adv
Huang B, Girart JM, Stephens IW, Megeath T, Le Gouellec VJM, Murillo NM, Cortés P, Fernández-López M, Li ZY, Looney LW, López-Vázquez JA, Pineda JE, Sánchez-Monge Á, Sanhueza P, Sadavoy S, Zhang Q, Hull CLH, Karnath N, Liang E, Myers PC.   +19 more
europepmc   +1 more source

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

Laser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman, Piotr Graczyk, Tobias Held, Mikolaj Pochylski, Kleoniki Sympoura, Rafal Bialek, Jacek Gapinski, Bahram Djafari Rouhani, Baerbel Rethfeld, Bartlomiej Graczykowski, Thomas Vasileiadis   +10 more
wiley   +1 more source

Metasurface-enabled astronomical polarimetry. [PDF]

Sci Adv
Li LW, Oakley PHH, Schindhelm RN, Sellers SG, Casini R, Rubin NA.   +5 more
europepmc   +1 more source

Design of an In Vivo‐Like Phantom for Quantitative Body CEST MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To design and validate a reproducible in vivo‐like fat‐containing CEST phantom that enables robust quantitative CEST MRI for body applications by providing physiologically realistic relaxation properties, relevant endogenous CEST contrasts (amide, guanidino, rNOE, and semi‐solid MT), and a controlled fat component.
Petr Menshchikov, Petr Bulanov, Neele Kempa, Mark E. Ladd, Andreas Korzowski, Philip S. Boyd   +5 more
wiley   +1 more source

Linear and Nonlinear Optical Properties of an AlSb/InAs/AlSb Spherical Quantum Dot in a Magnetic Field. [PDF]

Nanomaterials (Basel)
Wang S, Dakhlaoui H, Wong BM.
europepmc   +1 more source