scholarly journals Photon echoes and two dimensional spectra of the amide I band of proteins measured by femtosecond IR – Raman spectroscopy

2020 ◽  
Vol 11 (33) ◽  
pp. 8862-8874
Author(s):  
Paul. M. Donaldson

New ultrafast 2D-IR-Raman photon echo spectroscopy techniques are introduced and applied to the structural analysis of proteins.

2019 ◽  
Vol 10 (42) ◽  
pp. 9673-9678 ◽  
Author(s):  
Li-Qing Zheng ◽  
Marco Servalli ◽  
A. Dieter Schlüter ◽  
Renato Zenobi

Two-dimensional covalent monolayers synthesized at an air/water interface were structurally analyzed by tip-enhanced Raman spectroscopy (TERS). Finally, on-metal surface synthesis of a 2D polymer was demonstrated under ambient conditions.


2015 ◽  
Vol 6 (9) ◽  
pp. 1592-1598 ◽  
Author(s):  
Mariangela Di Donato ◽  
Elena Ragnoni ◽  
Andrea Lapini ◽  
Tomasz M. Kardaś ◽  
Boźena Ratajska-Gadomska ◽  
...  

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Manavendra P. Singh ◽  
Manab Mandal ◽  
K. Sethupathi ◽  
M. S. Ramachandra Rao ◽  
Pramoda K. Nayak

AbstractDiscovery of two-dimensional (2D) topological insulators (TIs) demonstrates tremendous potential in the field of thermoelectric since the last decade. Here, we have synthesized 2D TI, Sb2Te3 of various thicknesses in the range 65–400 nm using mechanical exfoliation and studied temperature coefficient in the range 100–300 K using micro-Raman spectroscopy. The temperature dependence of the peak position and line width of phonon modes have been analyzed to determine the temperature coefficient, which is found to be in the order of 10–2 cm−1/K, and it decreases with a decrease in Sb2Te3 thickness. Such low-temperature coefficient would favor to achieve a high figure of merit (ZT) and pave the way to use this material as an excellent candidate for thermoelectric materials. We have estimated the thermal conductivity of Sb2Te3 flake with the thickness of 115 nm supported on 300-nm SiO2/Si substrate which is found to be ~ 10 W/m–K. The slightly higher thermal conductivity value suggests that the supporting substrate significantly affects the heat dissipation of the Sb2Te3 flake.


Sign in / Sign up

Export Citation Format

Share Document