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Zhao J, Matlock A, Zhu H, Song Z, Zhu J, Wang B, Chen F, Zhan Y, Chen Z, Xu Y, Lin X, Tian L, Cheng JX. Bond-selective intensity diffraction tomography. Nat Commun 2022; 13:7767. [PMID: 36522316 PMCID: PMC9755124 DOI: 10.1038/s41467-022-35329-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
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).
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Affiliation(s)
- Jian Zhao
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
- The Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA
| | - Alex Matlock
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02142, USA
| | - Hongbo Zhu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China.
| | - Ziqi Song
- Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiabei Zhu
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Biao Wang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China
| | - Fukai Chen
- Department of Biology, Boston University, Boston, MA, 02215, USA
| | - Yuewei Zhan
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Zhicong Chen
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Yihong Xu
- Department of Physics, Boston University, Boston, MA, 02215, USA
| | - Xingchen Lin
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China
| | - Lei Tian
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA.
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA.
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.
- Department of Physics, Boston University, Boston, MA, 02215, USA.
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Optical Diffraction Tomography Using Nearly In-Line Holography with a Broadband LED Source. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12030951] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
We present optical tomography methods for a 3D refractive index reconstruction of weakly scattering objects using LED light sources. We are able to record holograms by minimizing the optical path difference between the signal and reference beams while separating the scattered field from its twin image. We recorded multiple holograms by illuminating the LEDs sequentially and reconstructed the 3D refractive index reconstruction of the sample. The reconstructions show high signal-to-noise ratio in which the effect of speckle artifacts is highly minimized due to the partially incoherent illumination of the LEDs. Results from combining different illumination wavelengths are also described demonstrating higher acquisition speed.
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