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A Raman Spectroscopic Approach to Photo‐Degradation Process of PTB7‐Th Polymer
2017 120th KCS Meeting Organic photovoltaic(OPV) is one of the most promising chemical components due to its potential to becoming next generation solar cell such as low cost, flexibility etc. Because of its potential, OPV has been studied to improve the power conversion efficiency. However, there is the Achilles heel of OPV, photodegradation. Even in...
RegDate
2019-10-31
Hit
2751
Fluorescence Protein for Long-term Live-cell Super-resolution Imaging of Various Cellular Structures
2017 120th KCS Meeting UnaG is a fluorescent protein discovered form Japanese Eel, whose fluorescence arise only when the protein binds to bilirubin (BR), a nonfluorescent metabolite. We investigated UnaG’s photoswitchable nature caused by repetitive binding and unbinding of BR. Mainly the photooxidation of BR induces the off-switching of UnaG fluore...
RegDate
2019-10-31
Hit
2340
Orientation-Sensitive Imaging of Anisotropic Particle with Interferometric Scattering Microscopy-type Method
2017 120th KCS Meeting Single molecule detection techniques have allowed one to observe biological systems. It is difficult to observe nanoscopic phenomena optically because of diffraction limit of optical detection. To overcome this limit, various super-resolution microscopy, such as fluorescence microscopy, have been developed. Although there are num...
RegDate
2019-10-31
Hit
2075
Infrared spectroscopy of Electrolyte System in Lithium-Ion Batteries
2017 120th KCS Meeting Lithium ion battery(LIB) is indispensable material in daily life for the portable energy storage devices. For this reason, various studies of LIB have been steadily done specially to increase the efficiency and stability. To find out the maximum efficiency condition of battery, researchers measure the conductivity by exchanging ...
RegDate
2019-10-31
Hit
2787
Vibrational mode competition in three-color stimulated Raman scattering (SRS) spectroscopy
2017 120th KCS Meeting Stimulated Raman Scattering (SRS) can obtain much enhanced scattering cross section (about seven orders of magnitude) than normal Raman scattering. Conventional SRS uses two-waves, pump and Stokes light, to detect molecular vibrational mode. The previous studies tuned the pump and Stokes wavelength to make vibrational coherence, ...
RegDate
2019-10-31
Hit
2859
Imaging of weak-contrast objects beyond shot noise limit
2017 ABC In this study, we measure a reflection matrix (i.e. input-output responses) of an object with extremely weak absorbance. The reflection eigenchannels identified from the singular value decomposition of the reflection matrix differentiate objects depending on their absorptivity. By using this property, we significantly improve the image contr...
RegDate
2019-10-30
Hit
1986
Enhancement of light energy delivery into the target deeply embedded in scattering media with time-gated reflection eigenchannel
2017 ABC Delivering light energy into the target object embedded in scattering media is critical for optical imaging or sensing. However, only a small fraction of incident waves reaches the target object due to random diffusion by multiple light scattering. Here we present a method to enhance light energy delivery toward the deeply embedded target in s...
RegDate
2019-10-30
Hit
2093
Focusing of light energy inside a scattering medium by controlling the time-gated multiple light scattering
2017 ABC To apply photonics technologies for in vivo applications, efficient delivery of light energy to targets embedded deep within scattering media is critical. Here we present a method to counteract random diffusion and to focus ‘snake-like’ multiple-scattered waves to the target embedded deep within scattering media. To realize this, we exper...
RegDate
2019-10-30
Hit
2106
Aberration Correction of an Optical System for High-resolution Synthetic Aperture Imaging
2017 ABC In high-resolution microscopy, objective lenses with high numerical aperture (NA) are essential elements. Oil immersion type objectives are widely exploited to achieve extremely high NA. However, their relatively limited working distance of a few hundred microns, limits their imaging depth and makes them hard to be used for deep-tissue imagin...
RegDate
2019-10-30
Hit
2620
Simultaneous suppression of aberration and scattering for high-resolution optical coherence imaging deep within biological tissues
2017 ABC Thick biological tissues give rise to not only the multiple scattering of incoming light waves, but also the aberrations of remaining signal waves. Due to the inability of existing optical microscopy to overcome both problems simultaneously, imaging depth warranting the sub-micron spatial resolution has remained extremely shallow. Here we pre...
RegDate
2019-10-30
Hit
1857
3D imaging of macroscopic objects hidden behind scattering media using time-gated aperture synthesis
2017 ABC Precision measurement for morphology of macroscopic objects has played an important role in many applications. We demonstrated a method for high-resolution macroscopy through a scattering layer. For a macroscopic scale test target, a Julian plaster model was used in the experiment. The height and width of the model were 6 cm and 3 cm, respect...
RegDate
2019-10-30
Hit
2246
High-resolution reflectance endomicroscopic imaging free from back-reflection noise at ultrathin imaging probes
2017 ABC Research trends in endoscopy have been to reduce the dimension of the system for minimally invasive diagnostics and to improve spatial resolution to the microscopic level for the detailed investigation of specimens. In developing endoscopes that meet these needs, ultrathin imaging probes such as graded index lenses and fiber bundles have been ...
RegDate
2019-10-30
Hit
1779
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