Kinetic selection of nonradiative excitation in photonic nanoparticles Gd2O3:Er

2020 ◽  
Vol 22 (13) ◽  
pp. 6818-6825 ◽  
Author(s):  
Anatoly Zatsepin ◽  
Yulia Kuznetsova
Keyword(s):  
Energy Transfer ◽  
Excited States ◽  
Parallel Channels ◽  
Kinetic Selection ◽  
Selection Of

In Gd2O3:Er nanoparticles, we reveal four parallel channels of Gd3+def → Er3+ energy transfer by kinetic selection of excited states.

Selection of high-quality sperm with thousands of parallel channels

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Mohammad Simchi ◽  
Jason Riordon ◽  
Jae Bem You ◽  
Yihe Wang ◽  
Sa Xiao ◽  
...  
Keyword(s):  
Clinical Practice ◽  
High Selectivity ◽  
High Yield ◽  
Sperm Selection ◽  
High Quality ◽  
Parallel Channels ◽  
Selection Of

A 3D-structured sperm selection device is presented that achieves both high selectivity and high yield via thousands of parallel channels. The device significantly outperforms the best clinical practice by selecting ∼100 000 of higher-quality sperm.

Theoretical Studies of Collision-induced Energy Transfer in Electronically Excited States

1990 ◽  
Vol 94 (11) ◽  
pp. 1253-1262 ◽  
Author(s):  
M. H. Alexander ◽  
A. Berning ◽  
A. Degli Esposti ◽  
A. Joerg ◽  
A. Kliesch ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excited States ◽  
Theoretical Studies ◽  
Electronically Excited States ◽  
Electronically Excited

THE APPLICATION OF A NEUTRON IDENTIFICATION CIRCUIT TO THE STUDY OF FAST-NEUTRON INTERACTIONS IN STILBENE

1963 ◽  
Vol 41 (5) ◽  
pp. 793-811 ◽  
Author(s):  
F. A. Johnson
Keyword(s):  
Space Charge ◽  
Fast Neutron ◽  
Excited States ◽  
Light Output ◽  
Particle Spectrum ◽  
Low Light ◽  
Trigger Circuit ◽  
Equivalent Electron ◽  
Selection Of ◽  
Α Particles

A neutron identification circuit is described which has a threshold corresponding to a neutron energy of about 350 kev (50–60 kev equivalent electron energy). The photomultiplier is operated under conditions of space-charge saturation. Selection of pulses due to recoil protons or heavier particles is accomplished by allowing the initial negative-going spike of the space-charge-limited pulse from the last dynode to activate a trigger circuit, the output of which is used to gate the subsequent positive portion of the dynode pulse for presentation to a simple diode discriminator. Separation of pulses due to recoil protons and to α particles is also possible to some extent.The circuit is applied to an investigation of fast-neutron interactions in stilbene. For the case of 14.85-Mev neutrons it is shown that the majority of pulses of low light-output are due to α particles produced by neutron interactions with the carbon and that structure is apparent in this α-particle spectrum. α-Particle groups due to the C12(n, α)Be9 reaction and to the breakup of C12 from its excited states at 7.656 Mev and 9.63 or 10.1 Mev are identified.

scholarly journals Ultrabroadband two-dimensional electronic spectroscopy reveals energy flow pathways in LHCII across the visible spectrum

2019 ◽  
Vol 205 ◽  
pp. 09034
Author(s):  
Minjung Son ◽  
Alberta Pinnola ◽  
Roberto Bassi ◽  
Gabriela S. Schlau-Cohen
Keyword(s):  
Energy Transfer ◽  
Excited States ◽  
Energy Flow ◽  
Energy Levels ◽  
Electronic Spectroscopy ◽  
Visible Region ◽  
Visible Spectrum ◽  
Energy Relaxation ◽  
Two Dimensional ◽  
Flow Pathways

We utilise ultrabroadband two-dimensional electronic spectroscopy to map out pathways of energy flow in LHCII across the entire visible region. In addition to the well-established, low-lying chlorophyll Qy bands, our results reveal additional pathways of energy relaxation on the higher-lying excited states involving the S2 energy levels of carotenoids, including ultrafast carotenoid-to-chlorophyll energy transfer on 90-150 fs timescales.

scholarly journals Hindering the Kinetic Selection of Dendritic Ba-Fresnoite by Phase Separation in a Glass of the Near-Eutectic Composition Ba2TiSi2O8–2.625SiO2

2019 ◽  
Vol 19 (6) ◽  
pp. 3559-3566 ◽  
Author(s):  
Wolfgang Wisniewski ◽  
Peter Švančárek ◽  
Milan Parchovianský ◽  
Christian Thieme ◽  
Christian Rüssel
Keyword(s):  
Phase Separation ◽  
Eutectic Composition ◽  
Kinetic Selection ◽  
Selection Of
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