Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Kenji Kinashi"'
Autor:
Naoto Tsutsumi, Takafumi Sassa, Tam Van Nguyen, Sho Tsujimura, Giang Ngoc Ha, Yusuke Mizuno, Boaz Jessie Jackin, Kenji Kinashi, Wataru Sakai
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract The photorefractive properties of triphenylamine polymer-based composites with various composition ratios were investigated via optical diffraction, response time, asymmetric energy transfer, and transient photocurrent. The composite consist
Externí odkaz:
https://doaj.org/article/36d6f6cb35554618b4c9710b3c0609ce
Publikováno v:
Photonics, Vol 11, Iss 6, p 521 (2024)
This paper investigates the possibilities of complex nonlinear dynamic signal generation using a simple photorefractive two-wave mixing system without any feedback using numerical simulations. The novel idea is to apply a sinusoidal electric field to
Externí odkaz:
https://doaj.org/article/9d6cf55082ef45f68dc9aa846af1debe
Publikováno v:
ACS Omega, Vol 7, Iss 14, Pp 12120-12126 (2022)
Externí odkaz:
https://doaj.org/article/cc48fa93aae14373b2506f5545de6a12
Autor:
Boaz Jessie Jackin, Masaki Shirai, Honoka Haginaka, Kenji Kinashi, Naoto Tsutsumi, Wataru Sakai
Publikováno v:
Nanoscale Research Letters, Vol 17, Iss 1, Pp 1-13 (2022)
Abstract An integrated device capable of generating large number of multiplexed optical vortex beams with arbitrary topological charge is considered as one of the crucial requirement for driving information photonics forward. Here we report a simple
Externí odkaz:
https://doaj.org/article/6aa113f136f34301a9f63664a98fb0a9
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
Abstract Large-area helix microstructures intended for metamaterials were fabricated using a negative photoresist, SU-8 using a two photon absorption direct laser writing (TPA-DLW). Two types of helix structures were fabricated. One type is those wit
Externí odkaz:
https://doaj.org/article/bd9dc04273b143a48e8225eabaa94c30
Publikováno v:
ACS Omega, Vol 5, Iss 47, Pp 30468-30477 (2020)
Externí odkaz:
https://doaj.org/article/731e8764a4db466c8aee741903716915
Autor:
Sumit Kumar Singh, Yoshikazu Adachi, Kenji Kinashi, Naoto Tsutsumi, Wataru Sakai, Boaz Jessie Jackin
Publikováno v:
Photonics, Vol 10, Iss 3, p 247 (2023)
Laguerre–Gaussian beams are structured light beams with a donut-shaped symmetric intensity profile and a helical phase profile. The beam profile is defined by a quantized parameter known as the mode number which extends to infinity. The availabilit
Externí odkaz:
https://doaj.org/article/66167196e0114f398af62152a3db0542
Autor:
Naoto Tsutsumi, Yusuke Mizuno, Boaz Jessie Jackin, Kenji Kinashi, Takafumi Sassa, Ha Ngoc Giang, Wataru Sakai
Publikováno v:
Photonics, Vol 9, Iss 12, p 996 (2022)
The photocurrent for poly(4-(dimethylamino)benzyl acrylate) (PDAA) photorefractive composites with (4-(diphenylamino)phenyl)methanol (TPAOH) photoconductive plasticizers was measured to be two orders of magnitude higher than that obtained with (2,4,6
Externí odkaz:
https://doaj.org/article/51dc38a027254d35b6290216683d7c26
Spin Trapping Analysis of Radical Intermediates on the Thermo-Oxidative Degradation of Polypropylene
Autor:
Thu Anh Nguyen, Hui Ming Lim, Kenji Kinashi, Wataru Sakai, Naoto Tsutsumi, Satoko Okubayashi, Satoru Hosoda, Tetsu Sato
Publikováno v:
Polymers, Vol 15, Iss 1, p 200 (2022)
The purpose of this study is to investigate the thermo-oxidative degradation behavior of polypropylene (PP) by comparing three types of pristine PP granules (consisting of homopolymer, random copolymer, and block copolymer) with their corresponding o
Externí odkaz:
https://doaj.org/article/70bb3dcb18074b6bb4325881d2e6962d
Publikováno v:
Polymers, Vol 14, Iss 21, p 4748 (2022)
The radical mechanisms of the thermal degradation of polyamide 66 (PA66) occurring under a vacuum at a temperature range between 80 °C and 240 °C (which includes the temperature of practical applications) were investigated using a spin-trapping ele
Externí odkaz:
https://doaj.org/article/8bcb21df35534fd28e887ee83475210d