Results 91 to 100 of about 180,033 (332)

External Reflection From Two‐Photon Laser‐Printed Micromirrors Enables Photomechanical Actuation at a 90° Incident Angle

Advanced Functional Materials, EarlyView.
Light reflectance increases along incidence angle and transmittance significantly drops around 90‐degree incidence angle. Here, we report two‐photon laser printed micro mirrors that redirect the skimming light beam into normal light absorption. Using this technique, light‐driven micro walkers and grippers are demonstrated by using grazing incidence ...
Leilei Song, Jianfeng Yang, Hao Zeng
wiley   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

Advanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta, Simone Bertucci, Jose Mendoza‐Carreño, Agustín Mihi, Paola Lova, Davide Comoretto, Ullrich Steiner, Marco Lattuada, Andrea Dodero   +8 more
wiley   +1 more source

Development of Photonic Crystal Fiber Based Gas/ Chemical Sensors

, 2018
The development of highly-sensitive and miniaturized sensors that capable of real-time analytes detection is highly desirable. Nowadays, toxic or colorless gas detection, air pollution monitoring, harmful chemical, pressure, strain, humidity, and ...
AA Rifat, AA Rifat, AA Rifat, BK Paul, Cándido Bariáin, D Ahuja, D Bykov, E Austin, G Amouzad Mahdiraji, G Whitenett, H Ademgil, H Ebendorff-Heidepriem, H Hamzaoui El, H Xuan, IE Araci, J Knight, J Park, J-M Brosi, J-P Berenger, Jeff Hecht, K Ahmed, K Ahmed, K Cui, K Fasihi, Kawsar Ahmed, KT Wan, L Alwis, M Arjmand, M Kaltenbrunner, M Pushkarsky, Md. Rabiul Hasan, Moutusi De, MR Hasan, MS Habib, NL Andrews, P Hu, Q Liu, R Hao, R. F. Cregan, S Asaduzzaman, S Asaduzzaman, S Das, S Gong, S Liu, S Olyaee, S Xu, SA Morin, SA Razzak, SK Mishra, SK Mishra, T Takeo, T Uno, TA Birks, W Ding, W Jin, Wee Lit Ng, X Feng, Y Al-Qazwini, Y Gao, Y Hou, Y Liu, Y Lu, Y Wang, Y Zhao, Y-H Chang   +64 more
core   +1 more source

High energy green nanosecond and picosecond pulse delivery through a negative curvature fiber for precision micro-machining [PDF]

, 2015
In this paper we present an anti-resonant guiding, low-loss Negative Curvature Fiber (NCF) for the efficient delivery of high energy short (ns) and ultrashort (ps) pulsed laser light in the green spectral region.
Carter, Richard M., Hand, Duncan P., Jaworski, Piotr, Knight, Jonathan C., Shephard, Jonathan D., Yu, Fei   +5 more
core   +1 more source

Novel Functional Materials via 3D Printing by Vat Photopolymerization

Advanced Functional Materials, EarlyView.
This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov, Patrick Fesser, Boris A. Bulgakov, Ulrich S. Schubert   +3 more
wiley   +1 more source

Intermodal Brillouin scattering in solid-core photonic crystal fibers

APL Photonics, 2021
We investigate intermodal forward Brillouin scattering in a solid-core photonic crystal fiber (PCF), demonstrating efficient power conversion between the HE11 and HE21 modes, with a maximum gain coefficient of 21.4 W−1 km−1. By exploring mechanical modes
Paulo F. Jarschel, Erick Lamilla, Yovanny A. V. Espinel, Ivan Aldaya, Julian L. Pita, Andres Gil-Molina, Gustavo S. Wiederhecker, Paulo Dainese   +7 more
doaj   +1 more source

Efficient Charge Transport in Zero‐Dimensional Perovskite for Ultrahigh‐Sensitivity X‐Ray Detection

Advanced Functional Materials, EarlyView.
A novel mono‐octahedral 0D Bi‐based Dpy3Bi2I12 perovskite strengthens the internal hydrogen bonds and forms a quasi‐2D lattice, exhibits exceptional charge transport and mobility, achieving high X‐ray sensitivity and ultralow‐dose imaging, and setting a new benchmark for 0D detector performance.
Xin Song, Lijie Wang, Jiayi Wang, Yafeng Xu, Renqian Zhou, Shulin Chen, Partha Maity, Peng Yuan, Yongcao Zhang, Bingyao Shao, Jian‐Xin Wang, Jun Yin, Ren‐Wu Huang, Youyou Yuan, Taimoor Ahmad, Osman M. Bakr, Omar F. Mohammed   +16 more
wiley   +1 more source

Silica photonic crystal fiber structure in order to simplify the process of making them [PDF]

Journal of Intelligent Procedures in Electrical Technology, 2014
In this research, a new structure of photonic crystal fibers(PCFs) will be proposed,in which instead of using the aire- holes in the cladding region, the flourine(2%) doped solid silica rods in order to reduce the problems associated with deformities of ...
Ashkan Ghanbari, Mehran Nikoo
doaj  

Finite element analysis of photonic crystal fibers [PDF]

, 2005
A finite-element-based vectorial optical mode solver, furnished with Bayliss-Gunzburger-Turkel-like transparent boundary conditions, is used to rigorously analyze photonic crystal fibers (PCFs).
Groesen, E. van, Hoekstra, H.J.W.M., Uranus, H.P.   +2 more
core   +2 more sources

2W/nm Peak-power All-Fiber Supercontinuum Source and its Application to the Characterization of Periodically Poled Nonlinear Crystals

, 2007
We demonstrate a uniform high spectral brightness and peak power density all-fiber supercontinuum source. The source consists of a nanosecond Ytterbium fiber laser and an optimal length PCF producing a continuum with a peak power density of 2 W/nm and ...
B.A. Cumberland, Demircan, Dudley, Dudley, Dunsby, Fei, Genty, Hsiung, J.C. Travers, J.R. Taylor, Jones, Knight, Kudlinski, R.E. Kennedy, Rakich, Ranka, S.V. Popov, Travers, Wadsworth   +18 more
core   +1 more source