Results 41 to 50 of about 153,685 (298)

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Achromatic Flat Metasurface Fiber Couplers within Telecom Bands

Photonics, 2022
We proposed a single metalens for fiber coupling within telecom bands. This proposed fiber coupler combined a single layer metalens and a Polydimethylsiloxane (PDMS) layer.
Jiayi Li, Rui Li, Xiaojun Xue, Xiao Jiang, Xiaoming Chen, Hsiang-Chen Chui   +5 more
doaj   +1 more source

Highly efficient coupling of photons from nanoemitters into single-mode optical fibers

, 2011
Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers. 7.4 +/- 1.2 % of the total emitted photons from single CdSe/ZnS nanocrystals were coupled into a 300-nm-diameter tapered fiber ...
Fujiwara, Masazumi, Noda, Tetsuya, Takeuchi, Shigeki, Toubaru, Kiyota, Zhao, Hong-Quan   +4 more
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Direct Side Pumping of Double-Clad Fiber Laser by Laser Diode Array Through the Use of Subwavelength Grating Coupler

IEEE Photonics Journal, 2012
An electron-beam-fabricated subwavelength grating coupler for direct side coupling of light emission from a high-power laser diode array (LDA) was studied theoretically and implemented experimentally.
C. W. Huang, C. L. Chang, D. Y. Jheng, K. Y. Hsu, S. L. Huang, D. W. Huang   +5 more
doaj   +1 more source

A lens-coupled scintillation counter in cryogenic environment

, 2011
In this work we present an elegant solution for a scintillation counter to be integrated into a cryogenic system. Its distinguishing feature is the absence of a continuous light guide coupling the scintillation and the photodetector parts, operating at ...
, , , , , , , A Amato, A description of this experimental method in condensed matter research can be found in: A. Schenck, A Stoykov, A. Kerek ., I. Britvich ., J A Konter, J Rodriguez, K Sedlak, M Bartkowiak, R Scheuermann   +16 more
core   +1 more source

Reducing Polarization Mode Dispersion With Controlled Polarization Rotations [PDF]

, 2006
One of the fundamental limitations to high bit rate, long distance, telecommunication in optical fibers is Polarization Mode Dispersion (PMD). Here we introduce a conceptually new method to reduce PMD in optical fibers by carrying out controlled ...
Barlow A J, Chen X, Chen X, Galtarossa A, Galtarossa A, Galtarossa A, Hart A C Huff R G Walker K L, Li M J, Pancharatnam S, Poole C D, Poole C D, Poole C D, S Massar, S Popescu, Slichter C P   +14 more
core   +2 more sources

Cell surface interactome analysis identifies TSPAN4 as a negative regulator of PD‐L1 in melanoma

Molecular Oncology, EarlyView.
Using cell surface proximity biotinylation, we identified tetraspanin TSPAN4 within the PD‐L1 interactome of melanoma cells. TSPAN4 negatively regulates PD‐L1 expression and lateral mobility by limiting its interaction with CMTM6 and promoting PD‐L1 degradation.
Guus A. Franken, Andrea Abel Gutierrez, Imke van Rossum, Cornelia G. Spruijt, Michiel Vermeulen, Guido van Mierlo, Blanca Scheijen, Annemiek B. van Spriel   +7 more
wiley   +1 more source

Utilizing a GeO2 optical fiber for a 2.79 μm Er:LuYSGG CW laser transmission

Results in Optics
We demonstrate the transmission of 2.79 μm continuous-wave (CW) Er:LuYSGG laser energy with a high coupling efficiency by a GeO2 fiber for the first time.
Kunpeng Dong, Dunlu Sun, Huili Zhang, Jianqiao Luo, Cong Quan, Yuwei Chen, Zhentao Wang, Hongyuan Li, Maojie Cheng   +8 more
doaj   +1 more source

Extremely Efficient DFB Lasers with Flat-Top Intra-Cavity Power Distribution in Highly Erbium-Doped Fibers

Sensors, 2023
High-performance erbium-doped DFB fiber lasers are presently required for several sensing applications, whilst the current efficiency record is only a few percent.
Amirhossein Tehranchi, Raman Kashyap
doaj   +1 more source