Results 81 to 90 of about 4,998,210 (282)

Frequency dissemination with free-space optical links [PDF]

, 2010
Optical clock technology is very certain to be integrated in the next high precision time standards. The demand for higher accuracy in time synchronization makes the use of free-space optical links necessary for frequency dissemination, especially if ...
Mata Calvo, Ramon, Giggenbach, Dirk, Moll, Florian   +2 more
core  

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +1 more source

Improving multi access interference suppression in optical CDMA by using all-optical signal processing [PDF]

, 2013
This paper presents the study of a novel alloptical method for processing optical CDMA signals towards improving suppression of multi access interference.
Glesk, Ivan, Idris, Siti Khadijah, Osadola, Tolulope Babajide   +2 more
core   +4 more sources

Characterization of Pure and Pb2+ ion Doped Methylcellulose Based Biopolymer Electrolyte Films: Optical and Electrical Properties

International Journal of Electrochemical Science, 2018
Pb2+ ion-conducting biopolymer electrolyte films, based on methylcellulose (MC) were prepared, using the solution cast technique. The effect of Pb2+ doping concentration on the optical and electrical properties of host MC are described in this manuscript.
Omed Gh. Abdullah, Shujahadeen B. Aziz, Dlear R. Saber   +2 more
doaj   +1 more source

Floquet-engineered topological flat bands in irradiated twisted bilayer graphene

Physical Review Research, 2020
We propose a tunable optical setup to engineer topologically nontrivial flat bands in twisted bilayer graphene under circularly polarized light. Using both analytical and numerical calculations, we demonstrate that nearly flat bands can be engineered at ...
Yantao Li, H. A. Fertig, Babak Seradjeh
doaj   +1 more source

Barrier‐Assisted Plasma Doping for Spatially Selective Resistance Engineering in MoS2 Transistors

Advanced Materials, EarlyView.
Barrier‐assisted NH3 plasma doping enables damage‐free, spatially selective carrier modulation in monolayer MoS2 transistors. An ultrathin pV3D3/Al2O3 protective‐dielectric stack acts as a chemical filter that allows NHx radicals to reach the MoS2 surface while blocking plasma damage. This process achieves a high electron concentration of 4.3 × 1013 cm−
Inseong Lee, Joonho Park, Seungsun Yoo, Seunghyun Yu, Mingu Kang, Seohak Park, Min Kyu Lee, Hyeongjin Lim, Dongyoung Kim, Kunwoo Roh, Sejin Kim, Kihyuk Kim, Wonbae Ahn, Kibum Kang, Yong‐Hoon Kim, Sung‐Yool Choi   +15 more
wiley   +1 more source

Metal Oxide Nano‐Interface Boosting the Deep Ultraviolet Adjustable Noise‐Filtering In‐Sensor Computing

Advanced Materials, EarlyView.
We show that sol‐gel‐fractured indium–magnesium oxide combines deep‐ultraviolet responsivity, high carrier mobility, and an excellent memory dynamic range. This unique materials platform enables deep‐ultraviolet long‐afterglow light‐emitting devices with multifunctional integration.
Zhongshi Ju, Peng Li, Jingsong Yuan, Boyuan Yu, Bin Han, Yusheng Chen, Jiangang Ma, Haiyang Xu, Yichun Liu, Paolo Samorì   +9 more
wiley   +1 more source

Electrolyte Design for Fast‐Charging Lithium‐Based Batteries

Advanced Materials, EarlyView.
A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley   +1 more source

Multiplexing a serial array of tapered optical fibre sensors using coherent optical frequency domain reflectometry [PDF]

, 2012
The use of high spatial resolution optical frequency domain reflectometry (OFDR) to facilitate the multiplexing of a serial array of tapered optical fibre sensors is presented.
Tatam, Ralph P., Chehura, Edmon, James, Stephen W., Jarzebinska, Renata   +3 more
core   +1 more source

Volatile Memristive Devices With Tunable Temporal Dynamics For Event‐Based Sensing

Advanced Materials, EarlyView.
Tunable volatile memristive devices can serve various neural‐inspired tasks that require different time windows of information retention. The ionic‐based volatility of the presented Pt/a‐STO/TaOx/Ta device stack can be reproducibly and controllably tuned in multiple ways.
Dimitrios Spithouris, Johannes Hellwig, Hugh Greatorex, Clemens Wittberg, Panagiotis Koutsogiannis, César Magén, Elisabetta Chicca, Regina Dittmann   +7 more
wiley   +1 more source