Results 61 to 70 of about 113,253 (318)

Study of achromatic beamline design for laser-driven femtosecond electron beams

open access: yesHe jishu, 2023
BackgroundThe electron beams produced by laser plasma acceleration have excellent quality for pulse lengths of the order of fs. Due to the existence of a strong laser field, there are difficulties in direct applications, and more applications need to ...
ZHU Jungao   +7 more
doaj   +1 more source

Ultrafast Coherent Spectroscopy [PDF]

open access: yes, 1988
Coherent spectroscopy, initially started in the mid-sixties, is intimately conncected with the development of intense coherent light sources. The generation of ultrashort light pulses enabled coherent spectroscopy to be extended to real-time measurements of rapid dynamic processes on the time scale of 10−12 s.
Zinth, Wolfgang, Kaiser, Wolfgang
openaire   +2 more sources

Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation

open access: yesAdvanced Functional Materials, EarlyView.
A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han   +13 more
wiley   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Dual‐Salt Carbothermal Shock Strategy Enabling Ultrafast and Sustainable Regeneration of Spent LiFePO4 Cathode Materials

open access: yesAdvanced Functional Materials, EarlyView.
Lithium iron phosphate (LFP) accounts for over 50% of the global cathode market, underscoring the need for efficient recycling and regeneration. We propose a dual‐salt carbothermal shock (CTS) strategy using LiI and NaI to in situ repair Li vacancies.
Yanjuan Li   +7 more
wiley   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

An ultrafast peek into the ultracold [PDF]

open access: yesScience, 2016
Quantum Simulation Gases of Rydberg atoms—exotic atoms in which one of the electrons is orbiting the nucleus at a large distance—can simulate the effects of long-range interactions in many-body systems.
openaire   +2 more sources

Effect Of High-optical Excitation On The Ultrafast Electron Dynamics In Stacked-monolayer Graphene Samples [PDF]

open access: yes, 2017
We report on transient absorption experiments performed at high optical excitation fluences and used to study the ultrafast dynamics in graphene. We employed a degenerated scheme of pump and probe at 800 nm (1.55 eV).
Hugo L.; Padilha   +7 more
core   +1 more source

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

open access: yesAdvanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He   +5 more
wiley   +1 more source

Generation of 12 nJ Pulse Energy by a Thulium-doped Fiber Mamyshev Oscillator [PDF]

open access: yesEPJ Web of Conferences, 2022
Schuhbauer B.   +6 more
doaj   +1 more source

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