—Breaking the single-molecule limit with terahertz spectroscopy “An antenna helps researchers measure vibrations in a buckyball” Terahertz spectroscopy has become a useful tool for studying materials because the energy and timescale of terahertz radiation match those of electron transitions, molecular vibrations, and other molecular excitations. But the radiation’s long wavelengths have prevented researchers from using the technique to study single molecules. One team of researchers now reports they’ve used an antenna to observe vibrations in a single 60-carbon buckyball (Nat. Photonics 2018, DOI: 10.1038/s41566-018-0241-1). Terahertz wavelengths are about 100 µm, 100,000 to 1 million times as large as a typical molecule, even a large one like a buckyball, which is about 1 nm across.
by Sam Lemonick |
September 09, 2018