Results 81 to 90 of about 204,662 (249)

Influence of modulation frequency in rubidium cell frequency standards [PDF]

The error signal which is used to control the frequency of the quartz crystal oscillator of a passive rubidium cell frequency standard is considered. The value of the slope of this signal, for an interrogation frequency close to the atomic transition ...
Audoin, C., Cyr, N., Vanier, J., Viennet, J.   +3 more
core   +1 more source

Nonlinear dynamics of waves and modulated waves in 1D thermocapillary flows. I: General presentation and periodic solutions

, 2002
We present experimental results on hydrothermal traveling-waves dynamics in long and narrow 1D channels. The onset of primary traveling-wave patterns is briefly presented for different fluid heights and for annular or bounded channels, i.e., within ...
Alvarez, Aranson, Arnaud Chiffaudel, Arnaud Prigent, Baxter, Bekki, Benjamin, Bot, Bot, Brusch, Brusch, Burguete, Burguete, Chaté, Chaté, Couairon, Coullet, Coullet, Croquette, Cross, Daviaud, Daviaud, Eckhaus, François Daviaud, Garnier, Garnier, Garnier, Janiaud, Kolodner, Kolodner, Kramer, Lega, Lega, Leweke, Liu, Lowe, Matkowsky, Mercier, Montagne, Mukolobwiez, Nicolas Garnier, Pelacho, Pelacho, Rabaud, Riecke, Riley, Sakaguchi, Schouveiler, Schwabe, Schwabe, Shraiman, Smith, Tobias, Torcini, Tuckerman, van Hecke, van Hecke, Vince, Vince, Zhou   +59 more
core   +2 more sources

Adaptive Hydrogels With Spatiotemporal Stiffening Using pH‐Modulating Enzymes

Advanced Functional Materials, EarlyView.
The chemomechanical coupling in an adaptive hydrogel is studied to further the development of adaptive hydrogels. This coupling is achieved by embedding a pH‐modulating enzyme in a pH‐responsive hydrogel. The enzymatic reaction can be triggered locally, which generates a pH‐decreasing wave throughout the system, increasing the crosslinking density and ...
Natascha Gray, Zoe Grämiger, André R. Studart, Rafael Libanori   +3 more
wiley   +1 more source

Robust and Unified VLC Decoding System for Square Wave Quadrature Amplitude Modulation Using Deep Learning Approach

IEEE Access, 2019
We have proposed a square wave quadrature amplitude modulation (SW-QAM) scheme for visible light communication (VLC) using an image sensor in our previous work. Here, we propose a robust and unified system by using a neural decoding method.
Syukron Abu Ishaq Alfarozi, Kitsuchart Pasupa, Hiromichi Hashizume, Kuntpong Woraratpanya, Masanori Sugimoto   +4 more
doaj   +1 more source

Synchronization tracking in pulse position modulation receiver [PDF]

, 1987
A clock pulse generator for decoding pulse position modulation in an optical communication receiver is synchronized by a delay tracking loop which multiplies impulses of a data pulse by the square wave clock pulses from the generator to produce positive ...
Vilnrotter, Victor A.
core   +1 more source

Delayed feedback control of unstable steady states with high-frequency modulation of the delay

, 2013
We analyze the stabilization of unstable steady states by delayed feedback control with a periodic time-varying delay in the regime of a high-frequency modulation of the delay.
Gjurchinovski, Aleksandar, Jüngling, Thomas, Schöll, Eckehard, Urumov, Viktor   +3 more
core   +1 more source

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

Commensurate $4a_0$ period Charge Density Modulations throughout the $Bi_2Sr_2CaCu_2O_{8+x}$ Pseudogap Regime

, 2016
Theories based upon strong real space (r-space) electron electron interactions have long predicted that unidirectional charge density modulations (CDM) with four unit cell (4$a_0$) periodicity should occur in the hole doped cuprate Mott insulator (MI ...
Davis, J. C. Séamus, Edkins, S. D., Eisaki, H., Fujita, K., Hamidian, M. H., Kim, Eun-Ah, Lawler, M. J., Mesaros, A., Uchida, S.   +8 more
core   +1 more source

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 more
wiley   +1 more source

Stückelberg interference in a superconducting qubit under periodic latching modulation

New Journal of Physics, 2015
When the level separation of a qubit is modulated periodically across an avoided crossing, tunneling to the excited state—and consequently Landau–Zener–Stückelberg interference—can occur.
M P Silveri, K S Kumar, J Tuorila, J Li, A Vepsäläinen, E V Thuneberg, G S Paraoanu   +6 more
doaj   +1 more source