Positron Annihilation Spectroscopy (PAS) is a highly sensitive, non-destructive method for probing atomic-scale imperfections in a broad spectrum of materials, from metals and ceramics to polymers and ...

Abstract: A fully integrated CMOS receiver for mm-wave rotational spectroscopy is demonstrated. The receiver consists of a sub-harmonic mixer based receiving front-end which down-converts 225–280 GHz ...

The film discusses infrared spectroscopy, a powerful analytical tool that utilizes infrared radiation to analyze chemical compounds. It explains the nature of electromagnetic radiation and how ...

Molecular rotational resonance (MRR) spectroscopy operates in the microwave region, detecting transitions between pure rotational energy levels. Combined with adiabatic cooling, MRR produces highly ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

Scientists have identified two polycyclic aromatic hydrocarbons—1- and 2-cyanonaphthalene—in interstellar space for the first time (Science 2021, DOI: 10.1126/science.abb7535). While many astronomers ...

Researchers developed a new method that allows, for the first time, to elucidate the chiral structure of molecules -- the exact spatial arrangement of the atoms -- by nuclear magnetic resonance (NMR) ...

Raman spectroscopy is an analytical technique that allows for the assessment of molecular structure and the identification of materials by examining the rotational and vibrational modes of molecules.

A research team led by Prof. GAO Xiaoming at the Anhui Institute of Optics and Fine Mechanics (AIOFM), Hefei Institutes of Physical Science (HFIPS) of Chinese Academy of Sciences (CAS) recently ...

Faraday rotation spectroscopy (FRS) enables the detection of paramagnetic molecules by detecting changes in the polarization state of the linearly polarized light caused by a gaseous medium immersed ...

Abstract: The development of electronic THz wave rotational absorption spectroscopy for quantitative gas sensing and its experimental validation is reported. The implementation of a THz wave ...