Results 81 to 90 of about 30,451 (313)

Parity-time symmetric gratings in 1550  nm distributed-feedback laser diodes: insight on device design rules

, 2021
H. Benisty, Vincent Brac de la Perrière, A. Ramdane, Anatole Lupu   +3 more
openalex   +2 more sources

siRNA Delivery via Cross‐Linked Gelatin Microparticles Enables Targeted Modulation of Osteogenic‐Vascular Cross‐Talk: An Advanced Human 3D in Vitro Test System for Therapeutic siRNA

Advanced Healthcare Materials, EarlyView.
Osteogenic‐angiogenic cross‐talk is a vital prerequisite for vascularized bone regeneration. In this study, we investigated the effects of siRNA‐mediated silencing of two inhibitory proteins, Chordin and WWP‐1, via CaP‐NP‐loaded gelatin microparticles in osteogenically differentiated microtissues.
Franziska Mitrach, Jonas Kubat, Stefan Simm, Alexandra H. Springwald, Burak Demir, Anton Liebezeit, Michael C. Hacker, Michaela Schulz‐Siegmund   +7 more
wiley   +1 more source

Single-mode Distributed Feedback Lasers for ⁸⁷Rb Two-Photon Quantum Technology Systems

, 2022
Eugenio Di Gaetano, Paul F. Griffin, Brendan Keliehor, Marc Sorel, Erling Riis, Douglas J. Paul   +5 more
openalex   +1 more source

A Modular Bioinstructive Platform Reveals Mechanistic Insights into Additive‐Free, Topography‐Driven Osteogenesis

Advanced Healthcare Materials, EarlyView.
Engineered microparticle topographies direct human mesenchymal stem cell osteogenesis without biochemical additives. This osteogenic commitment is driven by canonical Hedgehog signaling and followed by temporal IGF‐II engagement. Two‐photon polymerization demonstrates spatial control, enabling the engineering of topographical gradients that pattern ...
Fatmah I. Ghuloum, Leo A. H. Zeef, Lee A. Stevens, Marco A. N. Domingos, Susan J. Kimber, Mahetab H. Amer   +5 more
wiley   +1 more source

Communication with chaos using semiconductor lasers with an air gap

Moldavian Journal of the Physical Sciences, 2015
This paper reports the numerical results of the dynamical behavior of an integrated semiconductor laser subject to multiple optical feedback loops. The laser setup consists of a distributed feedback active section coupled to multi section cavities.
Oloinic, Tatiana, Rusu, Spiridon, Tronciu, Vasile   +2 more
doaj  

Implementation of Er-doped random fiber laser self-mixing sensor with ultra-limit sensitivity

APL Photonics
This study first demonstrates that the random distributed feedback fiber laser (RDFL) can be implemented for sensing detection by using the self-mixing effect as a sensing mechanism.
Jun Hu, Ruifeng Li, Zhijia Hu, Haosen Li, Yaozhong Yang, Hongtao Li, Jialiang Lv, Qi Yu, Yunkun Zhao, Benli Yu, Liang Lu   +10 more
doaj   +1 more source

3D‐Printed Titanium Implants with Bioactive Peptide‐Polysaccharide Scaffolds for Personalized Bone Reconstruction

Advanced Healthcare Materials, EarlyView.
Porous 3D‐printed titanium implants are made bioactive by integration with a supramolecular peptide‐hyaluronic acid nanofibrillar scaffold, without the addition of exogenous cells or growth factors. Uniform filling of the implant architecture promotes vascularized, spatially homogeneous bone regeneration, significantly enhancing osteogenesis throughout
Noam Rattner, Vladimir Perlis, Eran Golden, Ariel Pokhojaev, Rachel Sarig, Itzhak Binderman, Michal Halperin‐Sternfeld, Solomon Dadia, Lihi Adler‐Abramovich   +8 more
wiley   +1 more source

Impact of feedback time-distribution on laser dynamics

Physical Review Research
Time-distributed optical feedback in semiconductor lasers has gained attention for its ability to produce high-quality chaos and effectively suppress the time delay signature.
Martin Skënderas, Spencer W. Jolly, Martin Virte   +2 more
doaj   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source

Laser Chemosensor with Rapid Responsivity and Inherent Memory Based on a Polymer of Intrinsic Microporosity

Sensors, 2011
This work explores the use of a polymer of intrinsic microporosity (PIM-1) as the active layer within a laser sensor to detect nitroaromatic-based explosive vapors.
Graham A. Turnbull, Kadhum J. Msayib, Neil B. McKeown, Yue Wang, Ifor D. W. Samuel   +4 more
doaj   +1 more source