Molecular spectroscopy of a single aerosol particle

S. Arnold, M. Neuman, A. B. Pluchino

Research output: Contribution to journalArticlepeer-review


The absorption spectrum of a single micrometer-sized aerosol particle is measured for the first reported time in the IR. Particle absorption is determined through the IR modulation of visible scattered light near a structure resonance. This technique, termed structure resonance modulation spectroscopy, is used to measure the IR absorption spectrum of an (NH4)2SO4 aerosol droplet of 5.4-µm diameter in the region from 970 to 1280 cm-1. The resulting spectrum, when fitted by Mie theory, enables one to determine the molecular composition of the droplet.

Original languageEnglish (US)
Pages (from-to)4-6
Number of pages3
JournalOptics Letters
Issue number1
StatePublished - Jan 1984

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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