Results 61 to 70 of about 5,590 (258)

Random Raman Lasing in Diode-Pumped Multi-Mode Graded-Index Fiber with Femtosecond Laser-Inscribed Random Refractive Index Structures of Various Shapes

Photonics
Diode-pumped multi-mode graded-index (GRIN) fiber Raman lasers provide prominent brightness enhancement both in linear and half-open cavities with random distributed feedback via natural Rayleigh backscattering.
Alexey G. Kuznetsov, Zhibzema E. Munkueva, Alexandr V. Dostovalov, Alexey Y. Kokhanovskiy, Polina A. Elizarova, Ilya N. Nemov, Alexandr A. Revyakin, Denis S. Kharenko, Sergey A. Babin   +8 more
doaj   +1 more source

Manufacturing and Spectral Features of Different Types of Long Period Fiber Gratings: Phase-Shifted, Turn-Around Point, Internally Tilted, and Pseudo-Random

Fibers, 2017
The manufacturing and spectral features of different types of long period fiber gratings (LPFGs), ranging from phase-shifted, turn-around point, and internally tilted gratings, to pseudo-random gratings, are described and discussed in detail.
Francesco Chiavaioli, Francesco Baldini, Cosimo Trono   +2 more
doaj   +1 more source

Seeding High Brightness Fiber Amplifiers With Multi-Phase Coded Signal Modulation for SBS Effect Management

IEEE Access, 2020
We propose a new modulation approach based on multi-phase coded signal (MPCS) to increase stimulated Brillouin scattering (SBS) threshold in high power narrow-linewidth fiber amplifiers.
Wenchang Lai, Pengfei Ma, Wei Liu, Can Li, Rongtao Su, Yanxing Ma, Jian Wu, Man Jiang, Pu Zhou   +8 more
doaj   +1 more source

Hierarchical Collagen Nanofiber Gels Recapitulate a Physiologically Relevant Tumor Stromal Microenvironment

Advanced Healthcare Materials, EarlyView.
The collagen nanofiber (CNF) gel supports cancer cell culture, exhibiting cell morphology and cancer‐related protein expression similar to Matrigel. It offers a higher collagen concentration than commercial gels. Additionally, the CNF gel allows replication of the high elasticity of in vivo cancer tissue by controlling collagen fiber sizes, ranging ...
Naoko Sasaki, Tomoyuki Suezawa, Shiro Kitano, Ryohei Katayama, Michiya Matsusaki   +4 more
wiley   +1 more source

High Power, High-Order Random Raman Fiber Laser Based on Tapered Fiber

IEEE Photonics Journal, 2017
In this paper, we demonstrate a high power and high-order random Raman fiber laser based on a 1 km novel tapered fiber (TF). The core diameter of the TF gradually increases from 8 μm to 20  μm.
Zhaokai Lou, Xiaoxi Jin, Hanwei Zhang, Pu Zhou, Zejin Liu   +4 more
doaj   +1 more source

Cellular Responses to Mechanical Cues Across Scales: From Fundamental Insights to Translational Potential

Advanced Healthcare Materials, EarlyView.
This review examines how cellular behavior is regulated by mechanical cues transmitted through soft biomaterials, from single‐cell mechanosensing to tissue‐level adaptation. It highlights why physiological relevance, rather than model complexity alone, is critical for translational mechanobiology and introduces a scoring framework linking material ...
Mathias Polz, Manuel P. Kainz, Niklas Haider, Theresa Rienmüller, Kerstin Lenk, Rupert Kargl, Michele Terzano, Gerhard Sommer, Gerhard A. Holzapfel, Julia Fuchs   +9 more
wiley   +1 more source

Random Emission and Control of Whispering Gallery Mode Using Flexible Optical Fiber

Photonics
Axially uniform optical fibers provide a low-cost, scalable platform for the emission of whispering gallery mode (WGM) lasers. This paper proposes a method for generating and controlling WGM lasers based on the design of a flexible optical fiber array ...
Bingyang Cao, Zhen He, Weili Zhang
doaj   +1 more source

Mechanically Compliant, Precision‐Porous Brain Implants Reduce the Foreign Body Reaction and Guide Regeneration

Advanced Healthcare Materials, EarlyView.
This study explores how the brain responds to implants of different properties. Hydrogels with various mechanical properties and pore sizes were implanted in adult rat brains. It is observed that hydrogels with mechanical property closely matched to the brain and 40 µm pore size elicit a pro‐healing response from the brain by modulating the immune ...
Ian Dryg, Le Zhen, Rebecca Darrow, Savannah Lawton, Lars Crawford, Robert Robinson, Steve Perlmutter, James D. Bryers, Buddy D. Ratner   +8 more
wiley   +1 more source

Superbunched random fiber laser

Photon superbunching, distinguished by second-order coherence values far exceeding the Gaussian thermal limit, represents a highly desirable resource for quantum optics and correlation-based imaging technologies. However, existing approaches typically rely on fragile experimental platforms, inefficient nonlinear conversion processes, or mechanically ...
Ji, Qiang, Pang, Yuxi, Zhang, Weiming, Zhao, Xian, Qin, Zengguang, Liu, Zhaojun, Xu, Yanping   +6 more
openaire   +2 more sources

Multifunctional Thiolated Hyaluronic Acid‐graft‐PEDOT Dressing With Antifouling, On‐Demand Drug Delivery and Electrical Stimulation for Wound Healing

Advanced Healthcare Materials, EarlyView.
A multifunctional P(EDOT‐co‐EDOT‐g‐THA) dressing acts as a dynamic biointerface integrating antifouling capability, on‐demand drug delivery, and electrical stimulation. It achieves electrochemically triggered thiolated hyaluronic acid (THA) release while modulating cellular responses for wound healing application.
Jingwen Yang, Jiwon Hong, Anthony Phillips, Bicheng Zhu, Jenny Malmstrom, Devon T. Bryant, Alireza Akbarinejad, Lisa I. Pilkington, Jadranka Travas‐Sejdic   +8 more
wiley   +1 more source