Results 81 to 90 of about 4,005 (228)

Mechanically Robust Biodegradable Stents With Theragenerative Vascular Responses via Combined 3D Printing and Janus Nanoengineering

Advanced Science, EarlyView.
This work introduces a theragenerative 3D‐printed biodegradable stent with Janus nanoarchitecture for spatially controlled vascular healing. A luminal tantalum ion–implanted surface accelerates endothelialization and hemocompatibility, while an abluminal sirolimus/poly‐L‐lactic acid–tantalum layer provides sustained drug release and suppresses smooth ...
Jong Hwa Seo, Dong‐Sung Won, Hyun Lee, Seojoon Bang, Hyeong Seok Kang, Ju Yeong Gwon, Chan Ho Moon, Ji Won Kim, Yubeen Park, Minho Kang, Dong Yun Lee, Donghyun Lim, Kisuk Yang, Gi Doo Cha, Soo‐Hong Lee, Tae‐Sik Jang, Seokbeom Kim, Jun‐Kyu Park, Jung‐Hoon Park, Hyun‐Do Jung   +19 more
wiley   +1 more source

Frontier Advances and Challenges of High-Power Thulium-Doped Fiber Lasers in Minimally Invasive Medicine

Photonics
Lasers are increasingly used in the biomedical field because of their concentrated energy, good stability, ease of use, and other advantages, promoting the development of precision medicine to a higher level.
Wen-Yue Xu, Gong Wang, Yun-Fei Li, Yu Yu, Yulei Wang, Zhiwei Lu   +5 more
doaj   +1 more source

Seedless One‐Pot Synthesis of Colloidal InAs Quantum Dots Enabling a High‐Accuracy Photoplethysmography Oximeter

Advanced Science, EarlyView.
A real‐time, non‐contact photoplethysmography (PPG) system based on InAs colloidal quantum dots (CQDs) synthesized via a seedless injection synthesis is demonstrated. The measured oxygen saturation shows considerable agreement with commercial PPG devices.
Beom Kwan Kim, Seungin Jee, Yongnam Ahn, In‐Suh Lee, Dongeon Kim, Seongchong Park, Yujin Jung, In‐Ho Bae, Se‐Woong Baek   +8 more
wiley   +1 more source

Multiwavelength Thulium-Doped Fiber Laser Using a Micro Fiber-Optic Fabry–Perot Interferometer

IEEE Photonics Journal, 2018
A compact, all-fiberized multiwavelength thulium-doped fiber laser based on a micro fiber-optic Fabry–Perot interferometer (FPI) and a nonlinear optical loop mirror (NOLM) has been demonstrated.
Meng Wang, Yijian Huang, Li Yu, Zongpeng Song, Dezhi Liang, Shuangchen Ruan   +5 more
doaj   +1 more source

Soft and Adhesive Cardiac Patch for Electrophysiological and Contraction Measurement

Advanced Science, EarlyView.
This study developed an epicardial electronic patch with a modulus similar to that of the heart (approximately 65kPa), which can collect stable electrocardiogram signals and myocardial contractility on the surface of a dynamically beating heart. This is attributed to the hydrogen bond interaction formed between the amino and catechol groups in the ...
Wuliang Chen, Xinyu Shen, Hanning Liu, Lamei Du, Caicai Jiao, Longfei Li, Qian Wang, Qiuting Zhang, Lixue Tang, Liang Hu, Yubo Fan   +10 more
wiley   +1 more source

Broadband silica-based thulium doped fiber amplifier employing dual-wavelength pumping

, 2016
We report a broadband and gain-flattened silica-based thulium-doped fiber amplifier with dual-wavelength pumping (790nm + 1600nm). 15dB gain bandwidth is more than 220nm ranging from 1700 to 1920nm with a maximum gain of 29dB and a noise figure of less ...
Alam, Shaif-ul, Jung, Yongmin, Kang, Qiongyue, Liang, Sijing, Richardson, David, Wang, Junjia   +5 more
core   +1 more source

Light‐Switched Mesenchymal Stem Cells for In Situ Exosome Amplification in Craniofacial Bone Defect Reconstruction

Advanced Science, EarlyView.
Light‐switchable MSCs (MSC‐UCNPs) were constructed by intracellular incorporation of UCNPs. Upon 980 nm irradiation, UCNPs emitted localized ultraviolet light (365 nm), activating the ROS/HEXB/LAMP1 signaling pathway to suppress lysosome–multivesicular body fusion and thereby enhance exosome biogenesis. Embedded within an injectable hydrogel, MSC‐UCNPs
Tingting Wu, Yajing Liu, Shuman Wang, Xiaoming Bai, Luyun Zhang, Yuwei Liu, Zhiwen Fu, Chen Shi   +7 more
wiley   +1 more source

Optical spectra of fiber lasers operating at two microns

Open Physics
This letter compares the optical spectra of holmium- and thulium-doped silica fiber lasers operating in the continuous-wave regime with an output power of about 10 W.
Barmenkov Yuri, Muniz-Canovas Pablo, Alatorre-Félix Miriam A., Aboites Vicente   +3 more
doaj   +1 more source

Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber

, 2012
We demonstrate generation of linearly polarized pulses from a passively Q-switched Erbium-doped fiber laser. The cavity was designed using only polarization maintaining (PM) fibers and components, resulting in linearly polarized output beam with degree ...
Abramski, Krzysztof M., Jagiello, Joanna, Kozinski, Rafal, Librant, Krzysztof, Lipinska, Ludwika, Sobon, Grzegorz, Sotor, Jaroslaw, Zdrojek, Mariusz   +7 more
core   +1 more source

Emerging Materials and Future Strategies for Solid Oxide Electrochemical Cells

Advanced Energy Materials, EarlyView.
Solid oxide electrochemical cells operate under strongly coupled electrochemical and thermodynamic conditions, where performance is constrained by interactions among crystal structure, defect chemistry, and interfacial evolution. This review, based on a structure‐defect‐property‐durability framework, reveals the roles of lattice symmetry and defect ...
Qiuchun Lu, Yufei Zhang, Han Zhao, Pooi See Lee, Daniel H.C. Chua   +4 more
wiley   +1 more source