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IBS Institute for Basic Science

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Selective Suppression of Stimulated Raman Scattering with Another Competing Stimulated Raman Scattering 2019 FOM KEY WORDS: Vibrational spectroscopy, Raman microscopy, optical imaging, stimulated Raman scattering, coherent Raman scattering. Raman scattering microscopy offering a label-free, chemical-specific contrast mechanism based on the intrinsic vibrations of chemical bonds or groups is limited in spatial resolution by the optical diffraction limit. We ... RegDate 2020-03-31 Hit 1945
Label-free visualization of cellular uptake and trafficking of nanoparticles by interferometric scattering microscopy APS 2019 Interferometric scattering (iSCAT) microscopy is a new label-free optical imaging technique, recently developed to identify the nano-sized particles beyond a diffraction limit at a high temporal resolution. Here we report on the direct iSCAT visualization for the moment of cellular uptake of nanoparticles which are diffused in the plasma memb... RegDate 2020-03-30 Hit 1866
Coherent space-gated microscopy: a step towards deep-tissue phase imaging of biological cells 2019 SPIE Photonics West Conventional imaging scheme, relying on a ballistic wave, is severely compromised when applied to a multiply scattering medium. To mitigate the effect, a typical approach has been to distinguish and reject a multiply scattered wave in a time domain using a time-gating or coherence-gating method. Here, we present a new gating ... RegDate 2020-03-27 Hit 2016
High-resolution adaptive optical imaging within scattering media using point-illumination based closed-loop accumulation of single scattering microscopy 2019 SPIE Photonics West Optical imaging with diffraction-limited resolution has been a challenging task for targets deep within strongly scattering, inhomogeneous media such as biological tissues. Obtaining high-resolution images through inhomogeneous media is severely hindered not only by the background noise from multiple scattering of light but ... RegDate 2020-03-27 Hit 1685
Experimental mapping of near-field eigenmodes in sub-wavelength nanostructures 2019 16th Advanced Imaging Methods Workshop(AIM) - Abstract :"Near-field scanning optical microscopy (NSOM) is a useful tool for studying sub-diffraction nanostructures. As the size of nanostructures becomes smaller, the ability to observe and manipulate the near-field is getting more crucial. In ordinary NSOM imaging, the illumination of light source... RegDate 2020-03-27 Hit 1693
Feedback of time-gated reflection signals for enhancement of light energy delivery to the deeply embedded target OPJ 2018 In highly scattering medium such as biological environments, the light waves get diffused inboth space and time, and only a little amount of initial light energy can deliver to the targetobject. As a consequence, optical methodologies have been effective only to the shallowlayers, and their effect decreases with depth of the target. Here, we pres... RegDate 2020-03-27 Hit 1678
Precision Measurement of Circular Polarization States of Light with Rotating Wave-plate Polarimeter 2018 KPS Fall RegDate 2020-03-27 Hit 1683
Selective Activation DNA-PAINT Imaging with Reductive Caging 2018 KCS 122nd Advances in super-resolution microscopies enable us to observe sub-diffraction-limit organization of biological samples, such as intracellular distribution or structures in cells or tissues. However, super-resolution microscopies have limitations such as photobleaching of fluorescent dyes during prolonged light exposure. DNA-PAINT (Poin... RegDate 2020-03-27 Hit 1716
Heating Stability Observation of Binary and Quaternary Blend Organic Photovoltaics via In Situ Photoluminescence Spectroscopy 2018 KCS 122nd Organic photovoltaics (OPV) are remarkable solar cell because its processability and competitive price. Performance of OPV is directly related to its power conversion efficiency (PCE), which depends on state of bulk heterojunction in device. Bulk heterojunction of OPV is commonly binary blend (b-OPV), one component is conjugated polyme... RegDate 2020-03-27 Hit 1856
Raman and Fluorescence Imaging with Polymer Dot for Cell Biology 2018 KCS 122nd Raman scattering is an emerging contrast mechanism for biological imaging due to its narrow spectral bandwidth. However, the sensitivity is many orders of magnitude lower than that of fluorescence. Fluorescence offers extremely high sensitivity, but suffers from broad absorption and emission spectra. Since Raman and fluorescence are com... RegDate 2020-03-27 Hit 1738
Analytic framework for understanding the competing multiple light scattering processes ABC 2018 In many complex physical systems, the process of interest often cannot be easily separated from other processes because only the total combined process is accessible. Here, we suggest an analytic framework that predicts how each subprocess responds to the total process when only partial information on subprocesses is provided. Specifically, ... RegDate 2020-03-27 Hit 1749
Optical imaging featuring both long working distance and high spatial resolution by correcting the aberration of a large aperture lens ABC 2018 High-resolution optical imaging within thick objects has been a challenging task due to the short working distance of conventional high NA objective lenses. Lenses with a large physical diameter, such as microscope condensers, can feature both a large NA and a long working distance. However, such lenses suffer from strong aberrations. By perf... RegDate 2020-03-26 Hit 1735

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