Results 191 to 200 of about 1,920,107 (363)

Bright LaF3:Eu@Ir Phosphors Combining Two‐Photon Excitation, d → f Energy Transfer and Tunable Time‐Gated Chromaticity for Multicolor Cell Imaging

open access: yesAdvanced Optical Materials, EarlyView.
The surface functionalization of Eu‐doped LaF3 particles with a two‐photon absorbing IrIII complex results in the formation of ultrabright Eu:LaF3 phosphors, which exhibit a combination of short‐lived IrIII and long‐lived EuIII‐sensitized emissions. These Ir/Eu hybrids are effectively internalized by HEK‐293 cells without causing toxic effects, thereby
Yating Ye   +5 more
wiley   +1 more source

Tunable‐Wavelength Broadband Liquid‐State Carbon‐Quantum‐Dot Lasers

open access: yesAdvanced Optical Materials, EarlyView.
This work provides a gain‐induced waveguide structure to achieve programmable mode spacing by coupling liquid‐state lasing of carbon quantum dots to a vertically placed aluminum mirror, enabling an unprecedented transition from random lasing to multimode lasing without cumbersome micromanufacturing, even single‐mode lasing at a wide range from 641 to ...
Xuezhe Dong   +9 more
wiley   +1 more source

Femtosecond Laser Irradiation Induced Heterojunctions Between Graphene Oxide and Silver Nanowires. [PDF]

open access: yesMaterials (Basel)
Feng J   +8 more
europepmc   +1 more source

Femtosecond Yb:YCOB laser pumped by narrow-stripe laser diode and passively modelocked using ion implanted saturable-absorber mirror

open access: green, 2000
G.J. Valentine   +12 more
openalex   +2 more sources

Enhanced THz Emission From Ultrathin Ta/Fe/Pt Spintronic Trilayers

open access: yesAdvanced Optical Materials, EarlyView.
Ultrathin Ta/Fe/Pt spintronic trilayers on MgO(100) substrates generate intense terahertz (THz) emission under femtosecond laser pulse excitation. Constructive interference of the emitted THz waves from Ta and Pt layers is maximized through crystallographic engineering of the Ta layer into a high‐resistivity fcc phase and optimization of the trilayer ...
Evangelos Th. Papaioannou   +8 more
wiley   +1 more source

Femtosecond Laser-Assisted Donor and Recipient Preparation for Bowman Layer Transplantation. [PDF]

open access: yesJ Clin Med
Schlosser R   +8 more
europepmc   +1 more source

Carbon‐Coated Moth‐Eye Structure: An Ultrabroadband THz‐DUV Near‐Perfect Absorber

open access: yesAdvanced Optical Materials, EarlyView.
A silicon moth‐eye surface coated with pyrolytic carbon achieves >98% absorption from 1 to 1200 THz by combining gradient‐index matching with PyC's broadband conductivity, forming an ultra‐broadband absorber from THz to deep UV. Experimental results and simulations agreed well.
Yuki Hakamada   +18 more
wiley   +1 more source

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