Results 161 to 170 of about 708,136 (308)

Investigation of the laser fluence and wavelength dependence in surface‐assisted laser desorption/ionization mass spectrometry using gold nanoparticles

open access: yesRapid Communications in Mass Spectrometry, EarlyView.
Rationale Surface‐assisted laser desorption/ionization (SALDI) mass spectrometry (MS) builds on the use of nanostructured surfaces (e.g., coatings of colloidal nanoparticles) to promote analyte desorption and ionization. The SALDI process is believed to occur mainly through thermal processes, resulting from heating of the nanosubstrate upon absorption ...
Wendy H. Müller   +3 more
wiley   +1 more source

Tunable Broadband Emission via Self‐Trapped Excitons and Mn2+ Energy Transfer in a 0D Hybrid Manganese Bromide

open access: yesSmall, EarlyView.
A novel zero‐dimensional hybrid manganese bromide, (TMBM)2MnBr4, composed of isolated [MnBr4]2⁻ tetrahedra and TMBM⁺ (bromomethyltrimethylammonium) cations, exhibits two temperature‐driven phase transitions and intense green photoluminescence. Structural and spectroscopic analyses reveal that the emission arises from competition between self‐trapped ...
Paulina Peksa   +12 more
wiley   +1 more source

From Molecules to Bioaggregates: Unraveling the Photoexcitation Dynamics of Intracellularly Self‐Assembled Thiophene‐Based Fibers

open access: yesSmall Science, EarlyView.
Cell‐guided self‐assembly of thiophene based molecules inside living cells produces photostable, biocompatible nanofibers exhibiting J‐like excitonic coupling and stimulated emission. Integrated spectroscopic and quantum‐chemical analyses reveal unique photophysical behavior and low phototoxicity, positioning these supramolecular structures as ...
Filippo Monti   +11 more
wiley   +1 more source

Needle in a Haystack: Information Recovery in Low Signal‐to‐Noise Piezoresponse Force Microscopy Data

open access: yesSmall Methods, EarlyView.
Reconstruction of low signal‐to‐noise ratio signals enables improved information recovery in piezoresponse force microscopy data, even in data with a substantial amount of noise. Incorporating signal processing errors to detect and Bayesian matrix completion methods to reconstruct low SNR signals substantially alters the apparent PFM switching ...
Kerisha N. Williams   +5 more
wiley   +1 more source

A New Virtual Oscillator Control Without Third-Harmonics Injection For DC/AC Inverter

open access: yesIEEE transactions on power electronics, 2021
Siyi Luo   +4 more
semanticscholar   +1 more source

Power of the Many‐Body Force: Magnitudes and Angles of Atomic Van der Waals Dispersion Forces in Extended Molecular Systems

open access: yesSmall Structures, EarlyView.
Many‐body dispersion (MBD) forces are stronger, longer‐ranged, and more accurate than pairwise van der Waals (vdW) models. By comparing polyethylene melts, benzene solutions, and fullerenes, it is shown that a slower‐decay corrected pairwise scheme can recover MBD magnitudes.
Raul Ian Sosa   +2 more
wiley   +1 more source

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