High-resolution Fourier-transform infrared chemical imaging with multiple synchrotron beams
Michael J. Nasse,Michael J. Walsh,Eric C. Mattson,Ruben Reininger,Andre Kajdacsy-Balla,Virgilia Macias,Rohit Bhargava,Carol J. Hirschmugl +7 more
TLDR
This advance allows truly diffraction-limited high-resolution imaging over the entire mid-infrared spectrum with high chemical sensitivity and fast acquisition speed while maintaining high-quality SNR.Abstract:
Conventional Fourier-transform infrared (FTIR) microspectroscopic systems are limited by an inevitable trade-off between spatial resolution, acquisition time, signal-to-noise ratio (SNR) and sample coverage. We present an FTIR imaging approach that substantially extends current capabilities by combining multiple synchrotron beams with wide-field detection. This advance allows truly diffraction-limited high-resolution imaging over the entire mid-infrared spectrum with high chemical sensitivity and fast acquisition speed while maintaining high-quality SNR.read more
Citations
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Journal ArticleDOI
Evidence of Nanocrystalline Semiconducting Graphene Monoxide during Thermal Reduction of Graphene Oxide in Vacuum
Eric C. Mattson,Haihui Pu,Shumao Cui,Marvin A. Schofield,Sonny H. Rhim,Ganhua Lu,Michael J. Nasse,Michael J. Nasse,Rodney S. Ruoff,Michael Weinert,Marija Gajdardziska-Josifovska,Junhong Chen,Carol J. Hirschmugl +12 more
TL;DR: The results indicate that the resulting thermally reduced G-O (TRG-O) consists of a two-dimensional nanocrystalline phase segregation: unoxidized graphitic regions are separated from highly oxidized regions of GMO.
Journal ArticleDOI
Mid-Infrared Spectrometer Using Opto-Nanofluidic Slot-Waveguide for Label-Free On-Chip Chemical Sensing
Pao Tai Lin,Sen Wai Kwok,Hao-Yu Greg Lin,Vivek Singh,Lionel C. Kimerling,George M. Whitesides,Anu Agarwal +6 more
TL;DR: The combination of CMOS-compatible planar mid-IR microphotonics, and a high-throughput nanofluidic sensor system, provides a unique platform for chemical detection.
Journal ArticleDOI
Ultrasensitive chemical sensing through facile tuning defects and functional groups in reduced graphene oxide.
Shumao Cui,Haihui Pu,Eric C. Mattson,Zhenhai Wen,Jingbo Chang,Yang Hou,Carol J. Hirschmugl,Junhong Chen +7 more
TL;DR: A facile, low-cost, and efficient method to tune the structure and properties of chemically reduced graphene oxide (rGO) by applying a transient voltage across the rGO for ultrasensitive gas sensors and found the voltage-activated rGO was highly sensitive to NO2 with a sensitivity 500% higher than that of the original rGO.
Journal ArticleDOI
Towards a table-top synchrotron based on supercontinuum generation
TL;DR: In this paper, the authors compared the brightness of IR supercontinuum (SC) sources with those of synchrotron IR beamlines and SiC thermal emitters (Globars).
Journal ArticleDOI
Application of Vibrational Spectroscopy and Imaging to Point-of-Care Medicine: A Review
Susanne Pahlow,Karina Weber,Karina Weber,Jürgen Popp,Jürgen Popp,Bayden R. Wood,Kamila Kochan,Anja Rüther,David Perez-Guaita,Philip Heraud,Nicholas Stone,Alex Dudgeon,Ben Gardner,Rohith Reddy,David Mayerich,Rohit Bhargava +15 more
TL;DR: Recent developments that demonstrate potential for point of care impact and major trends in spectroscopic analyses ranging from in vivo measurements to that of ex vivo bodily fluids to extracted and processed tissues are provided.
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