Producing terahertz coherent synchrotron radiation at the Hefei Light Source

Abstract

Producing terahertz coherent synchrotron radiation atthe Hefei Light Source * XU De-Rong( ) 1) XU Hong-Liang( ) 2) SHAO Yan( ) 3)

Preparation and related properties of melanin iron supplement

“…BSM is a biological macromolecule with a complex structure, so the infrared spectrum of BSM shows a series of wide and strong absorption peaks. 39 The absorption peak of BSM is mainly located at several groups of absorption peaks of 3365 cm −1 , 2930 cm −1 , 1625 cm −1 , 1425 cm −1 ; the absorption peak at 3365 cm −1 is very wide and strong, indicating that BSM contains OH and NH, 40 and this region also belongs to the stretching vibration of CO; 41 the small and sharp absorption peak at 2930 cm −1 is caused by the stretching vibration of C–H in the alkane structure. 42 The strong absorption peaks at 1625 cm −1 and 1425 cm −1 are caused by the vibration of the aromatic ring, which is the vibration stretching absorption peak of the aromatic ring CC; 43 the strong absorption peak at 1625 cm −1 indicated the existence of CO in the molecule, which, together with the strong absorption peak at 3400 cm −1 , indicated the existence of –COOH.…”

Long-Stroke Nanopositioning Stage Driven by Piezoelectric Motor

“…When the drive voltage is applied across the A electrode and C electrodes (or B electrode and C electrode) at a resonate frequency of 39.6 KHz, the longitudinal extension and transverse bending vibration modes of the piezoelectric element are simultaneously excited [23], exactly as is modal simulated by the ANSYS FEM software and shown in Figure 2. A schematic illustration of the two vibration modes is presented in Figure 3.…”