Results 91 to 100 of about 113,253 (318)

Ultrafast all-optical modulation in silicon optical fibers [PDF]

, 2011
Degenerate and non-degenerate two-photon absorption based modulation is demonstrated in a hydrogenated amorphous silicon core optical fiber.
Day, T.D., Peacock, A.C., Healy, Noel, J. V. Badding, Sazio, P.J.A., P. J. A. Sazio, N. Healy, Sparks, J.R., A. C. Peacock, J. R. Sparks, Mehta, P., Badding, J.V., P. Mehta, T. D. Day   +13 more
core   +1 more source

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

Advanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena, Lucia Suarez, Aitor Ontoria, Francisca J. Benitez, Elixabete Rezabal, María Soledad Orellano, Marcelo Calderón, Cristián Huck‐Iriart, Agustin S. Picco, Matias L. Picchio, Ana Beloqui   +10 more
wiley   +1 more source

Ultrafast Synthesis of Urchin-Like Rutile TiO2 by Single-Step Microwave-Assisted Method

Nanomaterials, 2018
The preparations of crystal titanium dioxide (TiO2) are often time-consuming multistep processes involving high temperature. Rapid and efficient methods to obtain TiO2 with anatase or rutile phase are desirable.
Liqin Xiang, Yuchi Liu, Yang Liu, Chen Zheng, Xiaopeng Zhao   +4 more
doaj   +1 more source

Recent advances in ultrafast laser micromachining: from optical materials to living cells

, 2009
Modification of transparent materials with ultrafast lasers has attracted considerable interest due to a wide range of applications including laser surgery, integrated optics, optical data storage, 3D micro- and nanostructuring [1,2].
Kazansky, P.G., Svirko, Yuri P., Shimotsuma, Yasuhiko, Hirao, Kazuyuki, Qiu, Jiarong, Sakakura, Masaaki, Beresna, Martynas, Miura, Kiyotaka   +7 more
core  

Vibrational Coherence Reveals the Role of Dark Multiexciton States in Ultrafast Singlet Exciton Fission

, 2014
We use 2D electronic photon-echo spectroscopy to study ultrafast singlet exciton fission in pentacene. Our observations and analysis of vibronic coherences provide insight to the role played by dark multiexcitonic states in mediating ...
Bakulin, Artem A., Zigmantas, Donatas,, Dassia Egorova, Alster, Jan, Jan Alster, Rao, Akshay, Alster, Jan,, Egorova, Dassia, Alex Chin, Zigmantas, Donatas, Donatas Zigmantas, Sarah E. Morgan, Artem A. Bakulin, Chin, Alex, Akshay Rao, Morgan, Sarah E., Lund University.   +16 more
core   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

Resonance-free deep ultraviolet to near infrared supercontinuum generation in a hollow-core antiresonant fibre

JPhys Photonics
Supercontinuum generation in the ultraviolet (UV) spectral region is challenging in solid-core optical fibres due to solarisation and photodarkening. Antiresonant hollow-core fibres have overcome this limitation and have been shown to guide UV light at ...
Mohammed Sabbah, Robbie Mears, Kerrianne Harrington, William J Wadsworth, James M Stone, Tim A Birks, John C Travers   +6 more
doaj   +1 more source

Steady-State and Ultrafast Fluorescence Depolarisation in Rigid-Rod Conjugated Polymers [PDF]

, 2010
Polarised spectroscopic techniques were used to investigate the underlying physics of steady-state and ultrafast fluorescence depolarisation in conjugated polymers.
Vaughan, Helen Louise, VAUGHAN, HELEN,LOUISE   +1 more
core  

Ultrafast Vertical Organic Electrochemical Transistors With Ion‐Permeable Conductive Polymer Top Electrodes

Advanced Materials, EarlyView.
Vertical organic electrochemical transistors (vOECTs) are limited in speed by ion‐impermeable metal electrodes that slow ion injection. Using ion‐permeable PBFDO top electrodes allows direct vertical ion injection into BBL channels, achieving high current densities (>400 A cm−2), large on/off ratios (>106), and ultrafast switching in 28 µs. This sets a
Han‐Yan Wu, Yingxue An, Luigi Fabiano, Qifan Li, Qingqing Wang, Feng Zhang, Wenlong Jin, Miao Xiong, Junpeng Ji, Ugo Bruno, Grzegorz Greczynski, Grazia Maria Lucia Messina, Xianjie Liu, Chi‐Yuan Yang, Simone Fabiano   +14 more
wiley   +1 more source

Molecular dynamics studies of ultrafast laser-induced phase and structural change in crystalline silicon

, 2012
In this work, thermodynamic phenomena in crystalline silicon irradiated by an ultrafast laser pulse were studied using the method of molecular dynamics simulations. The Stillinger-Weber potential was used to model the crystalline silicon. The temperature
Yang, Chengjuan, Xu, Xianfan, Wang, Yaguo   +2 more
core   +1 more source