Results 121 to 130 of about 594,035 (375)

Colloidal Crack Sintering Lithography for Light‐Induced Patterning of Particle Assemblies

Advanced Functional Materials, EarlyView.
Colloidal crack sintering lithography (CCSL) is a microfabrication technique that uses light‐induced photothermal heating to trigger sintering and controlled cracking in polymer colloidal assemblies. Local structural changes generate microchannels and patterns, enabling direct writing of diverse topographic motifs.
Marius Schoettle, Ariane V. Mader, Willem L. Noorduin   +2 more
wiley   +1 more source

Dielectric laser acceleration of electrons in the vicinity of single and double grating structures - theory and simulations

, 2014
Dielectric laser acceleration of electrons close to a fused-silica grating has recently been observed (Peralta et al., Nature 503, 91 (2013); Breuer, Hommelhoff, PRL 111, 134803 (2013)).
Breuer, John, Hommelhoff, Peter, McNeur, Joshua   +2 more
core   +1 more source

Wide bandwidth and high coupling efficiency Si3N4-on-SOI dual-level grating coupler.

Optics Express, 2014
We propose and experimentally demonstrate fiber-to-chip grating couplers with aligned silicon nitride (Si(3)N(4)) and silicon (Si) grating teeth for wide bandwidths and high coupling efficiencies without the use of bottom reflectors.
W. Sacher, Ying Huang, L. Ding, B. Taylor, H. Jayatilleka, G. Lo, J. Poon   +6 more
semanticscholar   +1 more source

Spatiotemporal Plasma–Mediated Laser Fabrication of Ultrahigh‐Aspect‐Ratio Nanochannel Arrays for Vertical Perovskite Nanowire Semiconductor Devices

Advanced Functional Materials, EarlyView.
A spatiotemporal plasma–mediated laser processing approach is developed to fabricate ultrahigh–aspect ratio nanochannel arrays and corresponding perovskite nanowire arrays within transparent materials for optoelectronics devices. The laser‐fabricated nanochannels serve as templates for controlled perovskite infiltration and crystallization, enabling ...
Taijin Wang, Lingfeng Wang, Feng Liu, Gary J. Cheng   +3 more
wiley   +1 more source

Improved 8-channel silicon mode demultiplexer with grating polarizers.

Optics Express, 2014
An improved 8-channel silicon mode demultiplexer is realized with TE-type and TM-type grating polarizers at the output ends, and these gratings serve as fiber-chip couplers simultaneously. The present 8-channel silicon mode demultiplexer includes a three-
Jian Wang, Pengxin Chen, Sitao Chen, Yaocheng Shi, D. Dai   +4 more
semanticscholar   +1 more source

Thermal grating velocimetry

Optics Letters, 1998
A method is reported for time- and space-resolved nonintrusive velocimetry of high-speed gas flows by measurement of the Doppler shift of light scattered from a laser-induced thermal grating. The principle is demonstrated by use of a pulsed frequency-doubled Nd:YAG laser to induce a thermal grating in NO(2) seeded into an argon flow.
Walker, D, Williams, R, Ewart, P
openaire   +2 more sources

4D Printing of Self‐Immolative Polymers

Advanced Functional Materials, EarlyView.
The integration of self‐immolative polymers (SIPs) into light‐based 3D printed structures is presented as a new “living” 4D printing strategy. By exploiting their metastability and stimuli‐responsiveness, SIP‐containing printed objects can undergo rapid and triggered degrowth under ambient conditions and subsequent regrowth through polymer ...
Johannes Markhart, Philipp Mainik, Pia S. Klee, Eva Blasco   +3 more
wiley   +1 more source

Laser Interferometry for Broad Area SPR-Grating Couplers in Chemical Applications

Proceedings, 2017
In this work, the fabrication of a SPR (Surface Plasmon Resonance)-grating coupler using Laser Interference Lithography (LIL) has been investigated, giving rise to large area diffraction gratings on a 100 nm-thick gold film. The period of the diffraction
Mauricio Moreno-Sereno, Noemi Pérez, Guillem Domenech-Gil, Laura Parellada-Monreal, Miguel Martínez-Calderón, Mikel Gómez-Aranzadi, Nasser Darwish, Gemma G. Mandayo, Albert Romano-Rodriguez   +8 more
doaj   +1 more source

Quantum‐Grade Nanodiamonds from a Single‐Step, Industrial‐Scale Pressure and Temperature Process

Advanced Functional Materials, EarlyView.
Novel method for creation of nitrogen‐vacancy centers in 50‐nm nanodiamonds based on high‐temperature plastic deformation is demonstrated. Compared to the electron irradiation approach, it yields nitrogen‐vacancy centers with significantly improved charge stability, T1 relaxation time, and optical Rabi contrast.
Yahua Bao, Michal Gulka, Parkarsh Kumar, Jakub Copak, Priyadharshini Balasubramanian, Yuliya Mindarava, Rémi Blinder, Michael Olney‐Fraser, Haotian Wen, Hana Spanielova, Helen Zhi Jie Zeng, Benjamin Whitefield, Igor Aharonovich, Jaroslav Hruby, Fedor Jelezko, J. Daniel Belnap, Shery L. Y. Chang, Petr Cigler   +17 more
wiley   +1 more source

Plasma instability and amplification of electromagnetic waves in low-dimensional electron systems

, 1998
A general electrodynamic theory of a grating coupled two dimensional electron system (2DES) is developed. The 2DES is treated quantum mechanically, the grating is considered as a periodic system of thin metal strips or as an array of quantum wires, and ...
A. B. Mikhailovskii, A. L. Fetter, A. L. Fetter, C. Dahl, C. Wirner, D. C. Tsui, D. C. Tsui, D. Weiss, E. Gornik, F. Stern, I. L. Aleiner, K. Hirakawa, K. Kempa, L. Brey, L. D. Landau, L. D. Landau, L. D. Landau, L. Zheng, M. V. Krasheninnikov, M. V. Krasheninnikov, N. Okisu, R. A. Höpfel, R. Höpfel, S. A. Mikhailov, S. A. Mikhailov, S. A. Mikhailov, S. A. Mikhailov, S. A. Mikhailov, S. J. Allen, Jr., S. J. Allen, Jr., S. J. Smith, T. N. Theis, T. N. Theis, T. N. Theis, V. B. Shikin   +34 more
core   +1 more source