Results 171 to 180 of about 55,633 (211)

3D-printed aberration-free terahertz metalens for ultra-broadband achromatic super-resolution wide-angle imaging with high numerical aperture. [PDF]

Nat Commun
Chen J, Huang SX, Chan KF, Wu GB, Chan CH.   +4 more
europepmc   +1 more source

Responsive Visible‐Wavelength Metasurfaces from Porous Silicon Based on Fano Guided‐Mode Resonance

Advanced Optical Materials, EarlyView.
The article introduces mesoporous silicon metasurfaces (pSi‐MS) supporting Fano guided‐mode resonances in the visible regime. By combining top‐down lithographic patterning of 2D gratings with bottom‐up electrochemical porosification, the approach realizes a new class of responsive metasurfaces, enabling highly sensitive and portable platforms for small
Tomoshree Dash, Saddam Gafsi, Estevao Marques Dos Santos, Ivan Kravchenko, Judson D. Ryckman   +4 more
wiley   +1 more source

Compact and high-resolution spectrometer via Brillouin integrated circuits. [PDF]

Nat Commun
Wang JQ, Yang YH, Zhu ZX, Lu JJ, Li M, Pan X, Ma C, Xiao L, Zhang B, Wang W, Dong CH, Xu XB, Guo GC, Sun L, Zou CL.   +14 more
europepmc   +1 more source

Versatile Control of Spectral Emissivity in Mid‐Infrared Metasurfaces via Silicon Microstructuring

Advanced Optical Materials, EarlyView.
A family of metasurfaces is obtained very simply, solely through the structuration of a single‐crystal silicon surface, without any other material involved. Based on the infrared plasmonic behavior of highly doped silicon, further control of surface topography by micro‐ and nano‐structuration is found to enable an avenue of options toward tailoring its
Kirollos Ernest Matta, Elyes Nefzaoui, Ahmed A. Elsayed, Armande Hervé, Martine Gnambodoe‐CapoChichi, Frédéric Marty, Mazen Erfan, Yasser M. Sabry, Abdelkrim Khelif, Tarik Bourouina   +9 more
wiley   +1 more source

Broadband ultrafast self-heterodyned chiro-optical spectroscopy

Cerullo G, Gucci F, Iudica A, Tacchi AVY, Schirato A, Crotti G, Kim RM, Lee SM, Han JH, Villa A, Ali D, Rizzo A, Maiuri M, Nam KT, Valle GD.   +14 more
europepmc   +1 more source

Conformational switching modulates excited-state pathways in a cofacial perylene dimer. [PDF]

Chem Sci
Bressan G, Hartmann D, Brouwer J, Braun EM, Bull JN, Barendt TA.   +5 more
europepmc   +1 more source

Ultrabroadband Excitation of Hot Carriers in Plasmonic Nanorods Revealed by Two‐Dimensional Electronic Spectroscopy

Advanced Optical Materials, EarlyView.
This work dissects the ultrafast response of polydisperse plasmonic nanorods using two‐dimensional electronic spectroscopy, uniquely combining temporal and spectral resolution. Our ultrabroadband pulses cover both transverse and longitudinal nanorods’ resonances, revealing sub‐200‐fs dynamics and distinct broadening mechanisms.
Andrea Schirato, Mattia Russo, Luca Moretti, Alessandro Molinelli, Laura Polito, Filippo Rossi, Giulio Cerullo, Giuseppe Della Valle, Margherita Maiuri   +8 more
wiley   +1 more source

Dual-actuator-type active noise control in vibro-acoustic systems with openings. [PDF]

Sci Rep
Maamoun KSA, Lai CK, Wrona S, Pawelczyk M, Karimi HR.   +4 more
europepmc   +1 more source

Incorporating Si into Sb2Se3: Tailoring Optical Phase Change Materials via Nanocomposites

Advanced Optical Materials, EarlyView.
We study the structural, optical, and thermal effects of adding silicon to Sb2Se3 and demonstrate that the as‐deposited solid solution phase segregates after electro‐thermal switching, creating a nanocomposite with effective‐medium properties and a phase‐change response.
Chih‐Yu Lee, Yi‐Siou Huang, Felix Adams, Chuanyu Lian, Hongyi Sun, Jie Zhao, Zichao Ye, Nathan Youngblood, Juejun Hu, Leslie H Allen, Yifei Mo, Ichiro Takeuchi, Carlos A Ríos Ocampo   +12 more
wiley   +1 more source

Chemical Fingerprint Imaging <i>In Planta</i> with Broadband Coherent Anti-Stokes Raman Scattering Microscopy. [PDF]

Anal Chem
Ebersbach P, Smirnoff N, Camp CH, Moger J.   +3 more
europepmc   +1 more source