Search Results 1-20 of 957

WENG Julian , KASHIWAKURA Shunsuke , WAGATSUMA Kazuaki

… <p>This paper investigated two-dimensional spatial and temporal images of a copper emission line in laser-induced breakdown spectroscopy (LIBS), in order to clarify the excitation/de-excitation processes occurring in a laser-induced plasma. … The measurements were carried out under different plasma gases (argon, krypton, helium, and nitrogen), pressure levels (100 – 900 Pa) and delay times (100 – 1000 ns) with the aim of monitoring their effects on the behavior of the copper emission. …

Analytical Sciences 37(2), 367-375, 2021

J-STAGE 

Muhammad Razlan Zakaria , Mohd Firdaus Omar , Hazizan Md Akil , Mohd Mustafa Al Bakri Abdullah

… Based on the optical observation, zeta potential and UV-Vis spectroscopy, all findings indicate that the CNT dispersed in NMP has better dispersion and higher stability. … Analysis by extreme high-resolution field emission scanning electron microscope (XHRFESEM) shows the CNT was homogeneously distributed and covered the entire surface of the CF. …

Evergreen 7(4), 538-543, 2020-12

IR  DOI 

Mizuno Takahiko , Tsuda Takuya , Hase Eiji , Tokizane Yu , Oe Ryo , Koresawa Hidenori , Yamamoto Hirotsugu , Minamikawa Takeo , Yasui Takeshi

… Dual-comb microscopy (DCM), based on a combination of dual-comb spectroscopy (DCS) with two-dimensional spectral encoding (2D-SE), is a promising method for scan-less confocal laser microscopy giving an amplitude and phase image contrast with the confocality. … However, signal loss in a 2D-SE optical system hampers increase in image acquisition rate due to decreased signal-to-noise ratio. … In this article, we demonstrated optical image amplification in DCM with an erbium-doped fiber amplifier (EDFA). …

Scientific Reports (10), 8338, 2020-05-20

IR 

Shirai Naoki , Suga Goju , Sasaki Koichi

Plasma Sources Science and Technology 29(2), 025007, 2020-02-06

IR 

Watanabe Hiroyuki , Kawano Yuki , Tanaka Kazuo , Chujo Yoshiki

… We report an improvement of optical properties of the non‐emissive molecule through shuffling the molecular orbitals by boron complexation. … The formation of the B−N dative bond was confirmed by ¹¹B{¹H} NMR spectroscopy and a single‐crystal X‐ray structure analysis. … Most of the conventional 5AP derivatives hardly showed emission despite their planar and rigid molecular structures. …

Asian Journal of Organic Chemistry (9), 259-266, 2020-02

IR 

NAYAK Kali Prasanna

… <p>Tapered optical fiber with subwavelength diameter waist, <i>an optical nanofiber</i>, provides a unique and versatile platform for manipulating atoms and photons. … In the guided modes of the nanofibers, the optical field can be tightly confined in the transverse direction while enabling strong interaction with the surrounding medium in the evanescent region. …

Vacuum and Surface Science 63(10), 530-535, 2020

J-STAGE 

TABATA Kuniyoshi , KOMURASAKI Kimiya , KARIYA Tsuyoshi , MINAMI Ryutaro

… Optical emission spectroscopy was conducted for measuring vibrational and rotational temperatures of atmospheric millimeter-wave discharge plasma. …

Applied Plasma Science 28(1), 19-26, 2020

J-STAGE 

SUZUKI Asuka , MARUKO Takuya , TAKAHASHI Yoshihiro , SAKAMOTO Yukihiro

… Therefore, plasma during growth was measured using optical emission spectroscopy （OES）to clarify the relation between emission species and resistance values. … With increasing B-containing emission species such as B, BH, and BO intensity in OES spectra, resistivity was decreased. … Results suggest that B-containing emission species in OES spectra influence the resistivity of BDD.</p> …

Journal of The Surface Finishing Society of Japan 71(7), 473-477, 2020

J-STAGE 

Sekido Nobuaki , Kimura Yuta , Osanai Takumi , Miyagi Toshimi , Numakura Hiroshi , Yoshimi Kyosuke

… Diffusion couples composed of iron foils and Fe₂B bulk specimens were annealed at various temperature between 750ºC and 1100ºC, and the concentration profile of boron from the end-surface of the iron part were measured by the radio-frequency glow-discharge optical emission spectroscopy (rf-GD-OES). …

Tetsu-to-Hagane 106(6), 292-301, 2020

J-STAGE 

Asaka Koji , Toma Satoshi , Saito Yahachi

… <p>Long linear carbon chains (LCCs) encapsulated in carbon nanotubes (CNTs) were produced on a film scale by field emission discharge of CNT films. … LCCs inside CNTs were characterized by Raman spectroscopy and transmission electron microscopy. … originating from longitudinal optical phonons of LCCs. …

e-Journal of Surface Science and Nanotechnology 18(0), 159-163, 2020

J-STAGE