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121.
Tatsuki Tahara Yasuhiro Awatsuji Atsushi Kaneko Takamasa Koyama Kenzo Nishio Shogo Ura Toshihiro Kubota Osamu Matoba 《Optical Review》2010,17(3):108-113
We propose an optical implementation of a parallel two-step phase-shifting digital holography that utilizes a polarization
technique. The implementation uses a phase-shifting array device consisting of a retarder array attached to an image sensor,
and does not require the optical system to image the phase-shifting array device onto the image sensor required for the previously
reported optical implementation of the parallel two-step phase-shifting digital holography. Then, the proposed implementation
is essentially simple to align and compose. A preliminary experiment showed that the parallel two-step phase-shifting digital
holography based on the proposed implementation can remove the conjugate image clinging to the image reconstructed by Fresnel
transform alone with DC term suppression. Also, when the reconstruction distance was changed, the qualities of the reconstructed
images were quantitatively evaluated by using normalized root-mean-square error. It was clarified that the proposed implementation
was superior to other parallel phase-shifting digital holographies and Fresnel transform alone. Thus, the validity of the
proposed implementation was confirmed. 相似文献
122.
Tatsuki Tahara Yasuhiro Awatsuji Kenzo Nishio Shogo Ura Toshihiro Kubota Osamu Matoba 《Optical Review》2010,17(6):519-524
We comparatively analyzed and quantitatively evaluated the field of view and the viewing zone of single-shot phaseshifting
digital holography that uses space-division multiplexing, for the first time. We formulated the sampling intervals in the
techniques in which the phase of the reference wave is spatially divided into two and four steps, and numerically simulated
the areas. It was clarified that each area of the spatial two-step phase-shifting technique was twice as wide as that of the
spatial four-step phase-shifting technique. We also experimentally investigated the areas. The ghost appeared for the spatial
four-step technique when the object was between the boundary of the field of view of the spatial two-step technique and that
of the spatial four-step technique, but did not appear for the spatial two-step technique. 相似文献
123.
Catalytic C?H borylation has been reported using newly designed iron complexes bearing a 4,5,6,7‐tetrahydroisoindol‐2‐ide‐based PNP pincer ligand. The reaction tolerated various five‐membered heteroarenes, such as pyrrole derivatives, as well as six‐membered aromatic compounds, such as toluene. Successful examples of the iron‐catalyzed sp3 C?H borylation of anisole derivatives were also presented. 相似文献
124.
Sagun Jonchhe Chiran Ghimire Yunxi Cui Shogo Sasaki Mason McCool Soyoung Park Keisuke Iida Kazuo Nagasawa Hiroshi Sugiyama Hanbin Mao 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(3):887-891
Mechanical anisotropy is an essential property for biomolecules to assume structural and functional roles in mechanobiology. However, there is insufficient information on the mechanical anisotropy of ligand–biomolecule complexes. Herein, we investigated the mechanical property of individual human telomeric G‐quadruplexes bound to telomestatin, using optical tweezers. Stacking of the ligand to the G‐tetrad planes changes the conformation of the G‐quadruplex, which resembles a balloon squeezed in certain directions. Such a squeezed balloon effect strengthens the G‐tetrad planes, but dislocates and weakens the loops in the G‐quadruplex upon ligand binding. These dynamic interactions indicate that the binding between the ligand and G‐quadruplex follows the induced‐fit model. We anticipate that the altered mechanical anisotropy of the ligand–G‐quadruplex complex can add additional level of regulations on the motor enzymes that process DNA or RNA molecules. 相似文献
125.
Mochizuki Masahiro Suzuki Shogo D. Yanagisawa Keisuke Ohue Masahito Akiyama Yutaka 《Molecular diversity》2019,23(1):11-18
Molecular Diversity - Druglikeness is a useful concept for screening drug candidate compounds. We developed QEX, which is a new druglikeness index specific to individual targets. QEX is an... 相似文献
126.
Kazutomo Kawaguchi Satoshi Nakagawa Shogo Kinoshita Makoto Wada Hiroaki Saito Hidemi Nagao 《Molecular physics》2017,115(5):587-597
ABSTRACTWe present a simple coarse-grained model in which each amino acid residue is represented by one coarse-grained particle for interacting protein complex. In order to determine the coarse-grained potential function of the interaction between amino acid residues, free energy profile as a function of the distance between amino acid side chains is investigated by using all-atom molecular dynamics simulations with thermodynamic integration method. The Langevin dynamics simulation with Gō-like model and our coarse-grained model reproduces homotetramer complex structure of GCN4-pLI and shows that interaction between hydrophobic amino acid residues promote the association of GCN4-pLI monomers. 相似文献
127.
Orientation-controlled anisotropic diffraction gratings are realized by interferometric exposure using composite materials of nematic liquid crystals (LCs) and LC diacrylate monomers. The anisotropic diffraction properties in volume gratings, which dominantly diffract p- or s-polarized light, are shown to be controlled by the rubbed directions of the alignment layers under the control of the photopolymerization temperature. Images of the fringe patterns observed by polarization microscopy show the effects of the alignment layers on the LC orientation during grating formation. 相似文献
128.
Kazuhira Miwa Shinobu Aoyagi Takahiro Sasamori Shogo Morisako Hiroshi Ueno Yutaka Matsuo Hideki Yorimitsu 《Molecules (Basel, Switzerland)》2022,27(2)
The reduction of fullerene (C60) with sodium dispersion in the presence of an excess amount of dipropyl sulfate was found to yield highly propylated fullerene, C60(nC3H7)n (max. n = 24), and C60(nC3H7)20 was predominantly generated as determined by mass spectroscopy. 相似文献
129.
Optical Review - A waveguide grating on a transparent substrate can serve as an optical notch filter owing to guided-mode resonance. The filtering wavelength is highly sensitive to an incidence... 相似文献
130.
Shogo Nobukawa Seiki Hasunuma Takumi Sako Azusa Miyagawa Masayuki Yamaguchi 《Journal of Polymer Science.Polymer Physics》2017,55(24):1837-1842
We have investigated the effect of antiplasticization on the stress‐optical behavior of polycarbonate (PC) containing terphenyls (tPh) and di(2‐ethylhexyl)adipate (DEHA). Addition of the three tPhs (p‐, o‐, and m‐tPh) and DEHA at contents of 5–10 wt % increases the tensile storage modulus (E' ) of PC owing to the antiplasticization effect. In particular, p‐tPh increases E' more than the other additives, suggesting that the rod‐like shape matches the free volume of PC in the glassy state. The three tPh isomers improve the glassy birefringence of PC while DEHA does not change the glassy birefringence, which corresponds to the polarizability anisotropy. The stress‐optical coefficient, a ratio of stress and birefringence, of PC decreases with increasing additive content in order of p‐tPh ? o‐tPh > m‐tPh = DEHA. This result is agreement with a restricted rotational motion of additive molecule in PC, which is observed in dynamic mechanical and birefringence data. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017 , 55 , 1837–1842 相似文献