Results 91 to 100 of about 34,641 (302)

QBP1 Peptide as a Potential Anti‐Amyloidogenic Therapy for Type 2 Diabetes: An In Vitro Study

open access: yesAdvanced Science, EarlyView.
The anti‐amyloidogenic peptide QBP1 effectively halts human islet amyloid polypeptide (hIAPP) aggregation, preventing the formation of toxic β‐structured intermediates. Through a combination of biophysical assays, molecular dynamics, and cell‐based studies, QBP1 is shown to preserve β‐cell viability and metabolic homeostasis, positioning it as a ...
María M. Tejero‐Ojeda   +8 more
wiley   +1 more source

The Influence of Laser Linewidth on the Brillouin Shift Frequency Accuracy of BOTDR

open access: yesApplied Sciences, 2018
This paper analyzes the influence of laser linewidth on the measurement accuracy of a frequency-scanning Brillouin optical time domain reflectometer (FS-BOTDR), allowing for both the width of Brillouin gain spectrum and the signal-to-noise ratio (SNR) of
Qing Bai   +8 more
doaj   +1 more source

Spectral linewidth in microcavity surface‐emitting lasers [PDF]

open access: yes, 1994
The Schawlow–Townes expression for the laser linewidth predicts a substantial cw linewidth enhancement in microcavity lasers, in which a large fraction of spontaneous emission is directed into the lasing mode, in contrast with conventional semiconductor ...
Jasprit Singh   +3 more
core   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Linewidth narrowing in self-injection locked lasers: Effects of quantum confinement

open access: yes
This paper explores the impact of gain medium on linewidth narrowing in integrated self-injection locked III–V/SiN lasers, theoretically and experimentally.
Artem Prokoshin   +11 more
core   +1 more source

Enhanced ferromagnetic resonance linewidth of the free layer in perpendicular magnetic tunnel junctions

open access: yesAIP Advances, 2017
We report the frequency dependence of the ferromagnetic resonance linewidth of the free layer in magnetic tunnel junctions with all perpendicular–to–the–plane magnetized layers.
D. B. Gopman   +9 more
doaj   +1 more source

Narrow Linewidth Semiconductor Lasers from Visible to Infrared Wavelengths

open access: yes, 2022
We review recent breakthroughs of narrow-linewidth semiconductor lasers over broad wavelength range, including record-low fundamental linewidth below 40 mHz by self-injection-locking at infrared, the first fully integrated narrow-linewidth laser below ...
Morin, Ted   +14 more
core   +1 more source

New High‐Tc Charge‐Transfer Multiferroicity in the Quasi‐2D Antiferromagnet CrSbS3

open access: yesAdvanced Science, EarlyView.
ABSTRACT Low‐dimensional magnets, particularly 2D systems, offer a rich platform for realizing unconventional multiferroic mechanisms, especially when multiple polarization channels coexist. In the quasi‐2D antiferromagnet CrSbS3, which crystallizes in the centrosymmetric orthorhombic space group Pnma and orders magnetically at TN ≈ 90 K, two ...
Hung‐Cheng Wu   +17 more
wiley   +1 more source

Ferromagnetic resonance linewidth and two-magnon scattering in Fe1-xGdx thin films

open access: yesAIP Advances, 2017
Magnetization dynamics of Fe1-xGdx thin films (0 ≤ x ≤ 22%) has been investigated by ferromagnetic resonance (FMR). Out-of-plane magnetic field orientation dependence of resonance field and linewidth has been measured.
Sheng Jiang   +6 more
doaj   +1 more source

Narrow-Linewidth Fano Laser

open access: yes, 2022
By exploiting Fano resonances, a microscopic laser with a linewidth >20 times smaller than previous microscopic lasers is experimentally demonstrated. We also show that the linewidth can be further improved by engineering the Fano lineshape.
Yu, Yi   +4 more
core  

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