Results 111 to 120 of about 43,973 (335)

High‐Energy Femtosecond All‐Fiber Laser Systems in 1.7–1.8 μm Using a Normal‐Dispersion Tm‐Doped Fiber

open access: yesAdvanced Photonics Research, EarlyView.
High‐energy ultrafast all‐fiber lasers are demonstrated in the 1.7–1.8 μm range using a novel Tm‐doped fiber with depressed cladding for dispersion tailoring and short‐pass filtering. A parabolic core enhances optical gain, overcoming poor gain overlap in conventional depressed cladding fibers.
Shaoxiang Chen   +5 more
wiley   +1 more source

The asymptotic behavior of the solutions of degenerate parabolic equations [PDF]

open access: bronze, 1987
Catherine Bandle   +2 more
openalex   +1 more source

Floquet‐Engineered Noise‐Resilient Terahertz Receiver with Modular Phased Array Architecture for Scalable Chip‐Scale Communication

open access: yesAdvanced Photonics Research, EarlyView.
Overcoming the bandwidth, latency, and power constraints of wired interconnects in multicore processing units, this work introduces a terahertz wireless solution featuring a dual‐carrier modular phased‐array transmitter and a novel 2D semiconductor quantum‐well nanoreceiver.
Kosala Herath   +5 more
wiley   +1 more source

Substrate‐Restricted Asymmetric Evolution of Solid‐State Nanopores

open access: yesAdvanced Theory and Simulations, EarlyView.
Standalone nanopores can either expand or shrink based on the nucleation mechanism. A substrate‐restricted asymmetric pore dynamics are uncovered ‐ top expansion and bottom shrinkage, with minimum aperture reduced and forming a conical geometry, driven by molecular migration along an energy potential gradient within nanopores.
Hongshuai Liu   +4 more
wiley   +1 more source

Homogenization of a nonlinear degenerate parabolic differential equation

open access: yesElectronic Journal of Differential Equations, 2001
In this article, we study the homogenization of the nonlinear degenerate parabolic equation $$ partial_t b({x /varepsilon},u_varepsilon) - mathop{ m div} a({x /varepsilon},{t /varepsilon}, u_varepsilon,abla u_varepsilon)=f(x,t), $$ with mixed boundary ...
A. K. Nandakumaran, M. Rajesh
doaj  

Observation of Localized Resonant Phonon Polaritons in Biaxial α‐MoO3 Nanoparticles

open access: yesAdvanced Science, EarlyView.
Biaxial α‐MoO3 nanoparticles exhibit tunable, high‐Q mid‐infrared resonances driven by localized phonon polaritons. Combining a novel synthesis method, hyperspectral near‐field imaging and a unified theoretical analysis, this work reveals eigenmodes and resonance conditions in biaxial particles.
Daniel Beitner   +7 more
wiley   +1 more source

A Resistive Soft Robotic Exosuit for Dynamic Body Loading in Hypogravity

open access: yesAdvanced Science, EarlyView.
The resistive hypogravity exosuit is a lightweight wearable robotic exosuit that uses pneumatic artificial muscles to restore Earth‐like metabolic and muscular demands during locomotion in low gravity. Tested on healthy subjects in Earth and simulated Moon gravity, the suit restores energy expenditure and muscle activation without altering gait ...
Emanuele Pulvirenti   +6 more
wiley   +1 more source

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