Results 101 to 110 of about 12,496 (247)

The Relationship Between Plasma DPP4 Activity to BDNF Ratio and Mild Cognitive Impairment in Elderly Population With Normal Glucose Tolerance

open access: yesFrontiers in Aging Neuroscience, 2019
Objective: Since decreased brain-derived neurotrophic factor (BDNF) and increased dipeptidyl peptidase-4 (DPP4) activity have both been implicated in the pathogenesis of mild cognitive impairment (MCI), the aim of our study was to evaluate the ...
Liuping Xiao   +11 more
doaj   +1 more source

Cerebrospinal Fluid from Restless Legs Syndrome Patients Reduces Iron Uptake in Blood–Brain Barrier Endothelial Cells by Disrupting the Regulation of Transferrin Receptors

open access: yesAnnals of Neurology, Volume 100, Issue 1, Page 48-58, July 2026.
[Color figure can be viewed at www.annalsofneurology.org] Model figure of BBBECs TfR1 regulation in control and RLS: Graphical representation of TfR1 regulation in ECs by IRPs and representing it can be dysregulated by miR‐124‐3p in ECs of RLS. FPN1, ferroportin; BBBEC, blood‐brain barrier endothelial cells; IRP, iron regulatory proytein1/2; TfR1 ...
Kondaiah Palsa   +6 more
wiley   +1 more source

Widely Tunable Sampled-Grating DBR Laser

open access: yes, 2005
The 3-section SG-DBR tunable laser is fabricated using an ion implantation quantum-well intermixing process.
Zhao Lingjuan   +6 more
core  

Operating atomic fountain clock using robust DBR laser system

open access: yes, 2016
We operate an atomic fountain clock KRISS-F1 using a laser system based on a DBR (Distributed Bragg Reflector) laser. We have found that there is no major difference in the fountain performance between laser systems with an ECDL (Extended-Cavity Diode ...
Park, S.   +12 more
core   +1 more source

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

open access: yesInfoMat, Volume 8, Issue 7, July 2026.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

High‐Efficiency Phosphor Thin Films With Controlled Lateral Displacement for Low Color Crosstalk in Micro‐LED Displays

open access: yesJournal of the Society for Information Display, Volume 34, Issue 7, Page 626-636, July 2026.
High‐efficiency nano‐phosphor thin films were developed for micro‐LED color conversion, achieving high quantum efficiency and reduced lateral photon displacement. The optimized film structure effectively suppresses color crosstalk and enables high‐performance, full‐color micro‐LED displays.
Zengzhi Pei   +3 more
wiley   +1 more source

Tunable MQW-DBR lasers using selective area growth

open access: yes, 2000
The tunable ridge waveguide distributed Bragg reflector (DBR) lasers designed for wavelength-division-multiplex (WDM) communication systems at 1.55 um by using selective area growth (SAG) is reported.
Liu GL   +9 more
core  

EAM Modulated DBR Laser Array for TWDM-PON Applications [PDF]

open access: yes, 2017
4 Channel DBR laser arrays are fabricated for use in optical line terminals of TWDM-PON systems. These combine 1.4Q InGaAsP material in the DBR with EAMs using the identical active layer design. A tuning range ~10 nm and extinction ratio of >27 dB are
Zhu, H. L.   +6 more
core   +1 more source

Novel Sulfur‐Rich Polymers from Inverse Vulcanization as Functional Building Blocks for Photonics

open access: yesMacromolecular Rapid Communications, Volume 47, Issue 13, 3 July 2026.
Isopropenyl aromatic comonomers, in particular novel 2,7‐diisopropenylfluorene and 2,8‐diisopropenyldibenzothiophene, synthesized by sustainable, facile, single‐step SMCCR from available brominated substrates are exploited in the Inverse Vulcanization process to obtain functional Sulfur‐rich macromolecular materials.
Raimondo Insogna   +7 more
wiley   +1 more source

Exploiting Dimensionality in Hybrid Metal Halides: Design Strategies, Structure–Property Relationships, Optoelectronic Applications, and Future Perspectives

open access: yesSmall Structures, Volume 7, Issue 7, July 2026.
This review presents a unified structural classification for hybrid metal halides from 3D to 0D. It summarizes dimensional engineering strategies and dimension‐dependent structure–property relationships, offering a systematic framework to guide the design and development of high‐performance low‐dimensional optoelectronic materials.
Ying Liu   +3 more
wiley   +1 more source

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