Bond-selective intensity diffraction tomography.
Nat Commun
; 13(1): 7767, 2022 12 15.
Article
em En
| MEDLINE
| ID: mdl-36522316
ABSTRACT
Recovering molecular information remains a grand challenge in the widely used holographic and computational imaging technologies. To address this challenge, we developed a computational mid-infrared photothermal microscope, termed Bond-selective Intensity Diffraction Tomography (BS-IDT). Based on a low-cost brightfield microscope with an add-on pulsed light source, BS-IDT recovers both infrared spectra and bond-selective 3D refractive index maps from intensity-only measurements. High-fidelity infrared fingerprint spectra extraction is validated. Volumetric chemical imaging of biological cells is demonstrated at a speed of ~20 s per volume, with a lateral and axial resolution of ~350 nm and ~1.1 µm, respectively. BS-IDT's application potential is investigated by chemically quantifying lipids stored in cancer cells and volumetric chemical imaging on Caenorhabditis elegans with a large field of view (~100 µm x 100 µm).
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Tomografia
/
Microscopia
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article