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Issue 8, 2020
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Approaches to mid-infrared, super-resolution imaging and spectroscopy

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Abstract

This perspective highlights recent advances in super-resolution, mid-infrared imaging and spectroscopy. It provides an overview of the different near field microscopy techniques developed to address the problem of chemically imaging specimens in the mid-infrared “fingerprint” region of the spectrum with high spatial resolution. We focus on a recently developed far-field optical technique, called infrared photothermal heterodyne imaging (IR-PHI), and discusses the technique in detail. Its practical implementation in terms of equipment used, optical geometries employed, and underlying contrast mechanism are described. Milestones where IR-PHI has led to notable advances in bioscience and materials science are summarized. The perspective concludes with a future outlook for robust and readily accessible high spatial resolution, mid-infrared imaging and spectroscopy techniques.

Graphical abstract: Approaches to mid-infrared, super-resolution imaging and spectroscopy

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Article information


Submitted
25 Oct 2019
Accepted
05 Feb 2020
First published
10 Feb 2020

Phys. Chem. Chem. Phys., 2020,22, 4313-4325
Article type
Perspective

Approaches to mid-infrared, super-resolution imaging and spectroscopy

I. M. Pavlovetc, K. Aleshire, G. V. Hartland and M. Kuno, Phys. Chem. Chem. Phys., 2020, 22, 4313
DOI: 10.1039/C9CP05815J

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