Results 61 to 70 of about 31,377 (306)

The Removal of Ceramic Locks in Orthodontia by Means of Laser - Evaluation of the Effect of Diode Lasers Tm:YAP, Nd:YAG and GaAs

Česká Stomatologie a Praktické Zubní Lékařství, 2009
The study demonstrates the possibility of using laser radiation for ceramic bracket removing. Three laser radiations were examined for this effect, and the removing possibility and velocity together with enamel and pulp damage were investigated.
T. Dostálová, H. Jelínková, P. Koranda, J. Šulc, M. Němec, I. Ivanov, M. Miyagi, K. Iwai   +7 more
doaj  

Dual-Wavelength Passively Mode-Locked Yb-Doped Fiber Laser Based on a SnSe₂-PVA Saturable Absorber

IEEE Photonics Journal, 2019
In this letter, tin diselenide (SnSe2) was successfully prepared with the liquid-phase exfoliation method and embedded into polyvinyl alcohol as a saturable absorber (SA) in a dual-wavelength passively mode-locked Yb-doped fiber laser. Stable mode-locked
Qiongyu Hu, Ming Li, Ping Li, Zhaojun Liu, Zhenhua Cong, Xiaohan Chen   +5 more
doaj   +1 more source

Electrically driven lasing in metal halide perovskites: Challenges and outlook

APL Materials, 2020
Metal halide perovskite semiconductors have shown great potential as emissive layers in light-emitting diodes and gain media in optically pumped lasers, and thus represent a possible foundation for a non-epitaxial electrically driven laser diode. However,
William B. Gunnarsson, Barry P. Rand
doaj   +1 more source

Optical trapping with "on-demand" two-photon luminescence using Cr:LiSAF laser with optically addressed saturable Bragg reflector [PDF]

, 2012
We demonstrate a diode-pumped Cr:LiSAF laser with controllable and reliable fast switching between its continuous-wave and mode-locked states of operation using an optically-addressed semiconductor Bragg reflector, permitting dyed microspheres to be ...
Agate, Ando, C. T. A. Brown, David Burns, Hopkins, Nikolaus K. Metzger, Roth, Savitski, Savitski, Stephane Calvez, Tsuda, Vasili G. Savitski, W. Sibbett   +12 more
core   +1 more source

A Non‐Reciprocal Architected Porous Medium

Advanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies, Pablo Zavattieri, Nicolás Silin   +2 more
wiley   +1 more source

Optoelectrical Devices for Neural Interfacing: Engineering Integration, Stability, and Multimodal Sensing

Advanced Healthcare Materials, EarlyView.
Implantable optoelectrical devices are an effective resource for the modulation and monitoring of neural activity with high spatiotemporal resolution. This review discusses current challenges faced by these devices and outlines future perspectives for the development of next‐generation neural interfaces targeting chronic, multisite, and multimodal ...
Stella Aslanoglou, Barbara Spagnolo, Antonio Balena, Massimo De Vittorio, Ferruccio Pisanello   +4 more
wiley   +1 more source

Directly diode-pumped, Kerr-lens mode-locked, few-cycle Cr:ZnSe oscillator

, 2019
Lasers based on Cr$^{2+}$-doped II-VI material, often known as the Ti:Sapphire of the mid-infrared, can directly provide few-cycle pulses with super-octave-spanning spectra, and serve as efficient drivers for generating broadband mid-infrared radiation ...
Gröbmeyer, Sebastian, Krausz, Ferenc, Mak, Ka Fai, Nagl, Nathalie, Pervak, Vladimir, Pronin, Oleg   +5 more
core   +1 more source

321W average power, 1GHz, 20ps 1060nm pulsed fiber MOPA source [PDF]

, 2005
Pulses from a gain-switched laser diode were amplified in a fiber MOPA system to produce in excess of 320W of average power in 20ps pulses at 1GHz repetition rate at ...
Dupriez, P., Hickey, L.M.B., Ibsen, M., Jeong, Y., Malinowski, A., Nilsson, J., Piper, A., Richardson, D.J., Sahu, J.K., Zervas, M.N.   +9 more
core   +1 more source

Fully Wireless and Flexible Valves for Multiplexed and Prolonged Intravesical Liquid Release

Advanced Healthcare Materials, EarlyView.
A fundamental mechanism for the simultaneous control of multiple magnetic valves is reported in a miniature soft robotic patch for intravesical drug delivery, enabling fully wireless and programmable liquid release. Integrated with a bioadhesive interface and induction‐coupling‐based liquid volume sensing, the soft robotic patch is promising to enable ...
Boyang Xiao, Yi Zhu, Yusheng Wang, Janene M. Pierce, Jeffrey J. Tosoian, Xiaoguang Dong   +5 more
wiley   +1 more source

Mid-infrared wavelength- and frequency-modulation spectroscopy with a pump-modulated singly-resonant optical parametric oscillator [PDF]

, 2006
We describe the implementation of the wavelength- and frequency-modulation spectroscopy techniques using a singly-resonant optical parametric oscillator (OPO) pumped by a fiber-amplified diode laser.
Adhimoolam, B., Boller, K.-J., Gross, P., Lee, C.J., Lindsay, I.D.   +4 more
core   +3 more sources