Nanoscale simultaneous chemical and mechanical imaging via peak force infrared microscopy.

ABSTRACT: Nondestructive chemical and mechanical measurements of materials with ~10-nm spatial resolution together with topography provide rich information on the compositions and organizations of heterogeneous materials and nanoscale objects. However, multimodal nanoscale correlations are difficult to achieve because of the limitation on spatial resolution of optical microscopy and constraints from instrumental complexities. We report a novel noninvasive spectroscopic scanning probe microscopy method-peak force infrared (PFIR) microscopy-that allows chemical imaging, collection of broadband infrared spectra, and mechanical mapping at a spatial resolution of 10 nm. In our technique, chemical absorption information is directly encoded in the withdraw curve of the peak force tapping cycle after illumi

SUBMITTER: Wang L 

PROVIDER: S-EPMC5482550 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature