Results 31 to 40 of about 1,482,675 (252)

Optimizing optical Bragg scattering for single-photon frequency conversion

, 2014
We develop a systematic theory for optimising single-photon frequency conversion using optical Bragg scattering. The efficiency and phase-matching conditions for the desired Bragg scattering conversion as well as spurious scattering and modulation ...
Clark, Alex S., Eggleton, Benjamin J., Lefrancois, Simon   +2 more
core   +2 more sources

Efficient photosynthesis of carbon monoxide from CO2 using perovskite photovoltaics [PDF]

, 2015
Artificial photosynthesis, mimicking nature in its efforts to store solar energy, has received considerable attention from the research community. Most of these attempts target the production of H2 as a fuel and our group recently demonstrated solar-to ...
Abate, A, Curvat, L, Giordano, F, Grätzel, M, Luo, J, Mayer, MT, Schreier, M, Steier, L, Zakeeruddin, SM   +8 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Flexibility provision by virtual power line and soft open point in AC/DC distribution systems

International Journal of Electrical Power & Energy Systems
The increasing penetration of photovoltaic generation will significantly challenge the voltage quality, power flow, power losses in active distribution networks.
Xiaodong Yang, Wentao Jiang, Jing Ma, Da Xu, Chengjia Zhang, Yue Yang, Zhicheng Xu   +6 more
doaj   +1 more source

The crystal structure of tris(μ2-1,3-bis(4,4,4-Trifluoro-3-oxido-1-(oxo)but-2-en-1-yl)phenyl-/κ4O,O′:O′′,O′′′)-bis(1,2-dimethoxyethane-O,O′)-diterbium(III)

Zeitschrift für Kristallographie - New Crystal Structures, 2015
C50H38F18O16Tb2, monoclinic, C2/c (No. 15), a = 15.6505(13) Å, b = 12.8157(10) Å, c = 29.4494(24) Å, α = 90.0(0)°, β = 91.9581(9)°, γ = 90.0(0)°, V = 91.9581(9) Å3, Z = 4, Rgt(F) = 0.0262, wRref(F2) = 0.0612, T = 293 K.
Wang Bilin, Shi Jing, Hou Yan Jun, Chu Wen Yi, Sun Zhi Zhong   +4 more
doaj   +1 more source

Low-noise on-chip frequency conversion by four-wave-mixing Bragg scattering in SiNx waveguides

, 2012
Low-noise, tunable wavelength-conversion through non-degenerate four-wave mixing Bragg scattering in SiNx waveguides is experimentally demonstrated. Finite element method simulations of waveguide dispersion are used with the split-step Fourier method to ...
Agha, Imad, Davanco, Marcelo, Srinivasan, Kartik, Thurston, Bryce   +3 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Analysis and suppression method of synchronous frequency resonance for self-synchronizing voltage source inverter

International Journal of Electrical Power & Energy Systems
Self-synchronizing voltage source inverter (SSVSI) can effectively improve grid frequency stability. However, the synchronous frequency resonance (SFR) inevitably exists in SSVSI.
Youze Fu, Yandong Chen, Zhiwei Xie, Zili Wang, Shixiang Cao, Xuyang Li, Xudong Li, Hua Li   +7 more
doaj   +1 more source

The crystal structure of tris(μ2-1,3-bis(4,4,4-trifluoro-3-oxido-1-(oxo)but-2-en-1-yl)phenyl-κ4O,O′:O′′,O′′′)-bis(1,2-dimethoxyethane-κ2O,O′)dicerium(III), C50H38F18O16Ce2

Zeitschrift für Kristallographie - New Crystal Structures, 2016
C50H38F18O16Ce2, monoclinic, C2/c (no. 15), a = 15.589(3)Å, b = 13.118(2) Å, c = 29.118(5) Å, β = 92.285(2)°, V = 5949.8(18) Å3, Z = 4, Rgt(F) = 0.0452, wRref(F2) = 0.1321, T = 273 K.
Liu Yang, Shi Jing, Hou YanJun, Chu WenYi, Sun ZhiZhong   +4 more
doaj   +1 more source

Light Reflection Loss Reduction by Nano-Structured Gratings for Highly Efficient Next-Generation GaAs Solar Cells

Energies, 2020
This paper mainly focuses on increasing the conversion efficiency of GaAs solar cells by reducing the light reflection losses. The design of nano-structured gratings and their light trapping performance are modelled and optimised by using the finite ...
Narottam Das, Devanandh Chandrasekar, Mohammad Nur-E-Alam, M. Masud K. Khan   +3 more
doaj   +1 more source