Results 91 to 100 of about 77,485 (300)

Low Threshold Vertical Cavity Surface Emitting Lasers Based on CsPbI3 Thin Films

open access: yesAdvanced Science, EarlyView.
The first vertical‐cavity surface‐emitting laser (VCSEL) based on CsPbI3 thin films is fabricated by planar hot pressing. By optimizing the cavity design through optical gain assessment and rigorous coupled‐wave analysis, the VCSEL achieved an exceptionally low lasing threshold of 2.8 µJ cm−2.
Naho Kurahashi   +11 more
wiley   +1 more source

Auger electron emission initiated by the creation of valence-band holes in graphene by positron annihilation

open access: yesNature Communications, 2017
Auger processes are at the core of electron emission in solid-state physics, however measuring the spectra of electrons emitted solely as a result of Auger transitions remains a challenge.
V. A. Chirayath   +13 more
doaj   +1 more source

CW‐Pumped Amplified Spontaneous Emission From Thermally Evaporated CsPbBr3 Films

open access: yesAdvanced Science, EarlyView.
Thermally evaporated CsPbBr3 thin films sustain amplified spontaneous emission from short‐pulse toward quasi‐continuous‐wave excitation. Time‐resolved spectroscopy, controlled excitation, and substrate engineering reveal how excitation duration governs optical‐gain stability.
Yuliia Kominko   +5 more
wiley   +1 more source

Antennas for the detection of radio emission pulses from cosmic-ray induced air showers at the Pierre Auger Observatory

open access: yes, 2012
The Pierre Auger Observatory is exploring the potential of the radio detection technique to study extensive air showers induced by ultra-high energy cosmic rays. The Auger Engineering Radio Array (AERA) addresses both technological and scientific aspects
ARAMO, CARLA   +6 more
core   +1 more source

Mechanochemical Engineered Sulfur Copolymers Onto Group 13 and Related Fillers Through Lewis Acid‐Base Pairing

open access: yesAdvanced Science, EarlyView.
Green mechanochemical copolymerization was developed for universal interfacial modification of Group 13 and related fillers. By leveraging Lewis acid–base coordination to anchor sulfur‐containing polymers—validated via multiscale characterization and DFT—this versatile method boosts performance across liquid fuels, thermal‐shielding materials, and ...
Chen Wang   +7 more
wiley   +1 more source

The Pierre Auger Observatory IV: Operation and Monitoring - Collection of papers in http://arxiv.org/ftp/arxiv/papers/1107/1107.4806.pdf

open access: yes, 2012
Contributions of the Auger Collaboration to the 32nd International Cosmic Ray Conference, Beijing, August, 2011: Technical reports on operations and monitoring of the Pierre Auger ...
ARAMO, CARLA   +4 more
core  

The Pierre Auger Observatory I: The Cosmic Ray Energy Spectrum and Related Measurements - Collection of papers in http://arxiv.org/ftp/arxiv/papers/1107/1107.4809.pdf

open access: yes, 2011
Contributions of the Auger Collaboration to the 32nd International Cosmic Ray Conference, Beijing, August, 2011: Studies of the cosmic ray energy spectrum at the highest energies with the Pierre Auger Observatory
D. D'Urso   +5 more
core   +1 more source

Ionically Counter‐Programmable Phase‐Separation of Superstable Star‐Biopolyamide Coacervates for Electrothermally‐Responsive Pseudosolid Smart Windows

open access: yesAdvanced Science, EarlyView.
We develop bio‐based, star‐branched polyamides from itaconic acid and cadaverine with tunable lower critical solution temperature (LCST) transitions for dynamic solar modulation. Specific metal ion coordination with pyrrolidone moieties drives precise phase transitions via calcium‐induced salting‐in and sodium‐induced salting‐out mechanisms. Formulated
Jie Liu   +6 more
wiley   +1 more source

Magnesium‐Retention Assisted Synthesis of High‐Performance Zintl Thermoelectrics

open access: yesAngewandte Chemie, EarlyView.
Mg volatilization and chemical instability during high‐temperature synthesis hinder the scalable fabrication of Mg‐based thermoelectrics. Here, a magnesium‐retention assisted synthesis (MRAS) strategy stabilizes Mg using a sacrificial Mg reservoir and an inert‐gas‐regulated melting environment.
Boxuan Hu   +9 more
wiley   +2 more sources

Observation of suppressed Auger mechanism in type-I quantum well structures with delocalized electron-hole wavefunctions

open access: yesAIP Advances, 2015
We report the first observation of non-threshold Auger mechanism for a quantum well structure with Type-I band alignment. Excitation-dependent photoluminescence measurements were used to extract the Auger recombination coefficients from 77 K up to room ...
Iman Hassani Nia   +2 more
doaj   +1 more source

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