Hyperspectral and Nanosecond Temporal Resolution Widefield Infrared Photothermal Heterodyne Imaging
Hyperspectral and Nanosecond Temporal Resolution Widefield Infrared Photothermal Heterodyne Imaging
复制标题
高光谱和纳秒时间分辨率宽场红外光热外差成像
DOI:
10.1021/acsphotonics.3c00559
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发表时间:
2023
期刊:
影响因子:
7
通讯作者:
Kuno, Masaru
中科院分区:
文献类型:
--
作者:
Kniazev, Kirill;Zaitsev, Evgenii;Zhang, Shubin;Ding, Yang;Ngo, Loc;Zhang, Zhuoming;Hartland, Gregory V.;Kuno, Masaru
Label-free, bond-selective imaging offers new opportunities for fundamental and applied studies in chemistry, biology, and materials science. Preventing its broader application to investigating spatially- congested specimens are issues related to low sensitivity as well as low spatial and temporal resolution. Here, we demonstrate a widefield, mid-infrared (MIR) photothermal imaging technique, called widefield Infrared Photothermal Heterodyne imaging (wIR-PHI), that massively parallelizes acquisition of MIR absorption data through use of a high-speed complementary metal-oxide-semiconductor camera. wIR-PHI possesses notable features that include: spatial resolution significantly below the MIR diffraction limit, hyperspectral imaging capabilities, high sensitivity, and ∼100 ns temporal resolution. The first two features are highlighted by hyperspectral imaging of proximally close poly(methyl methacrylate) (PMMA) and polystyrene (PS) nanoparticles where clear, bond-specific imaging of nanoparticles, separated by less than the MIR diffraction limit, is demonstrated. Sensitivity is highlighted by imaging individual PMMA and PS nanoparticles with radii betweenr= 97–556 nm. This leads to a current, peak absorption cross-section limit-of-detection of σabs= 1.9 × 10–16cm2. wIR-PHI’s 100 ns temporal resolution is simultaneously demonstrated by observing the decay of photothermal contrast on individual nanoparticles on a ∼200–6200 ns timescale. In whole, wIR-PHI’s dramatic increase in acquisition speed opens opportunities for future MIR kinetic imaging and spectroscopic studies of important chemical, biological, and material processes.
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影响因子:
3.5
作者:
R. Palmer;C. Manning;J. Rzepiela;J. Widder;J. L. Chao
通讯作者:
J. L. Chao
影响因子:
3.5
作者:
P. Seitz
通讯作者:
P. Seitz
影响因子:
3.5
作者:
JOHNSON, TJ;SIMON, A;HARRIS, GW
通讯作者:
HARRIS, GW
影响因子:
4
作者:
Lee, Eun Seong;Lee, Jae Yong
通讯作者:
Lee, Jae Yong
DOI:
10.1117/12.2545159
发表时间:
2020
期刊:
Single Molecule Spectroscopy and Super-resolution Imaging XIII
影响因子:
--
作者:
Pavlovetc, Ilia M.;Podshivaylov, Eduard A.;Frantsuzov, Pavel A.;Hartland, Gregory V.;Kuno, Masaru K.
通讯作者:
Kuno, Masaru K.