Effects of vibrational excitation on multidimensional tunneling: General study and proton tunneling in tropolone

1995 ◽  
Vol 102 (10) ◽  
pp. 3977-3992 ◽  
Author(s):  
Shoji Takada ◽  
Hiroki Nakamura
Keyword(s):  
Vibrational Excitation ◽  
General Study ◽  
Proton Tunneling ◽  
Multidimensional Tunneling

Experimental evidence for proton tunneling in methylammonium lead triiodide perovskites

2017 ◽  
Author(s):  
Lionel Hirsch ◽  
Yan-Fang Chen ◽  
Yu-Tang Tsai ◽  
Dario M. Bassani
Keyword(s):  
Experimental Evidence ◽  
Proton Tunneling

Effect of ro-vibrational excitation of NeH+on the stereodynamics for the reactions H+NeH+(v= 1−3,j= 1,3,5) → H+2+ Ne

2013 ◽  
Vol 22 (2) ◽  
pp. 028201
Author(s):  
Shu-Hui Yin ◽  
Jing-Han Zou ◽  
Ming-Xing Guo ◽  
Lei Li ◽  
Xue-Song Xu ◽  
...  
Keyword(s):  
Vibrational Excitation

scholarly journals Pixeled metasurface for multiwavelength detection of vitamin D

Nanophotonics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 3921-3930
Author(s):  
Valentina Di Meo ◽  
Alessio Crescitelli ◽  
Massimo Moccia ◽  
Annamaria Sandomenico ◽  
Angela M. Cusano ◽  
...  
Keyword(s):  
Vitamin D ◽  
Small Molecules ◽  
Vibrational Excitation ◽  
Localized Surface Plasmon ◽  
Large Field ◽  
Geometrical Parameters ◽  
Single Chip ◽  
Large Area ◽  
Accurate Analysis ◽  
Hydroxyvitamin D

AbstractThe steadily increasing demand for accurate analysis of vitamin D level, via measurement of its best general marker, 25-hydroxyvitamin D (25(OH)D), pushes for the development of novel automated assays capable of working at very low concentrations. Here, we propose a plasmonic biosensor of 25(OH)D3 (calcifediol) based on surface-enhanced infrared absorption spectroscopy, which exploits the resonant coupling between plasmonic nanoantennas and vibrational excitation of small molecules. Specifically, our proposed platform features a large-area (several mm2) metasurface made of gold nanoantennas fabricated on a silicon substrate, comprising different macroregions (“pixels”) of area 500 × 500 µm2. In each pixel, the nanoantenna geometrical parameters are tuned so as to support localized surface plasmon resonances (and hence large field enhancements at the nanoscale) within different regions of the infrared spectrum. As a result, a single chip is capable of performing analysis from the region of functional groups to that of fingerprint. Two different designs are fabricated via electron beam lithography, functionalized with a correlated antibody for the detection of 25(OH)D3, and characterized via Fourier-transform infrared spectroscopy. Our experiments demonstrate the capability to detect a concentration as low as 86 pmol/L, and an amount of immobilized small molecules of 25(OH)D3 monohydrate (molecular weight: 418.65 g/mol) as low as 4.31 amol over an area of 100 × 100 µm2.

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