The Dalian Coherent
Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large laser light source in the world dedicated to the particular range of short - wavelength light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germ
Light Source, whose completion was announced today in Beijing, has a twist that makes it unique: It is the only large laser
light source in the world dedicated to the particular range of short - wavelength light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germ
light source in the world dedicated to the particular range
of short - wavelength
light called vacuum ultraviolet, which makes it «a new tool for the detection and analysis of molecules undergoing chemical reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University of Göttingen in Germ
light called vacuum
ultraviolet, which makes it «a new tool for the detection and analysis
of molecules undergoing chemical
reactions,» says Alec Wodtke, a physical chemist at the Max Planck Institute for Biophysical Chemistry and the University
of Göttingen in Germany..
Ultraviolet rays have enough energy to allow the
reaction in common materials such as titanium dioxide, but UVs make up only about 4 percent
of the
light Earth receives from the sun.
David Sánchez - Quiles, a doctoral candidate at the Mediterranean Institute for Advanced Studies in Spain, explained that nanoparticles
of TiO2 act as
ultraviolet light filters in sunscreens, but are often coated with silica or alumina to avoid undesirable
reactions on the skin.
In a feat
of manipulating substances at the nanoscale, UCLA researchers and colleagues demonstrated a method for isolating two molecules together on a substrate and controlling how those two molecules react when excited with
ultraviolet light, making detailed observations both before and after the
reaction.
Hemolysis increases the
light absorbance
of blood serum or plasma, which particularly interferes with chemistry tests that read in the
ultraviolet / visible wavelengths.4 Increased free hemoglobin in plasma can also directly inhibit some chemical
reactions.