-
1992 Volume 43 Issue 5 Pages
372
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Ryusuke NISHITANI, Atsuo KASUYA, Yuichiro NISHINA
1992 Volume 43 Issue 5 Pages
373-377
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Takayuki HOMMA, Takuya YAMAZAKI, Tetsuya OSAKA
1992 Volume 43 Issue 5 Pages
378-382
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Hiroshi TOKUMOTO
1992 Volume 43 Issue 5 Pages
383-387
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Masahiko HARA
1992 Volume 43 Issue 5 Pages
388-392
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Isao SEKINE, Makoto YUASA
1992 Volume 43 Issue 5 Pages
393-398
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Katsuhiko NAOI
1992 Volume 43 Issue 5 Pages
399-403
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Yuko ARAI
1992 Volume 43 Issue 5 Pages
404-408
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Masatoshi OSAWA
1992 Volume 43 Issue 5 Pages
409-413
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Yoshiro SASAKI
1992 Volume 43 Issue 5 Pages
414-418
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Junko KONDO, Kazunari DOMEN
1992 Volume 43 Issue 5 Pages
419-423
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Katsuhisa SUGIMOTO
1992 Volume 43 Issue 5 Pages
424-428
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Toshiaki OHTSUKA
1992 Volume 43 Issue 5 Pages
429-433
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Sachio YOSHIHARA
1992 Volume 43 Issue 5 Pages
434-439
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Takamasa SAGARA
1992 Volume 43 Issue 5 Pages
440-445
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Michio ENYO
1992 Volume 43 Issue 5 Pages
446-450
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Kyoichi WATANABE, Naoki MATSUDA, Tatsuo NISHINA, Tomokazu MATSUE, Isam ...
1992 Volume 43 Issue 5 Pages
451-456
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
An
in situ XRD study of electroless copper deposition on a nylon film substrate using Rochelle salt as a complexing agent and formalin as reducing agent have been carried out using a purpose-designed cell to clarify the effect of additives and aeration on the initial stage of the deposition. The additives used were 2, 2'-dipyridyl (dpy), 4, 4'-dpy, polyethylene glycol (PEG) 300, PEG 600 and PEG 1000, which are usual additives for obtaining uniform distribution of crystal size in the Cu deposits. There has been little discussion of average crystal size, inclusion of Cu
2O and other additive effects, or of bath aeration effect. The present study characterized the average crystal size of the Cu deposits as a function of additive concentration and plating time. It is suggested that 2, 2'-dpy promotes the codeposition of Cu
2O with Cu. The addition of 4, 4'-dpy appeared to limit the diameter of the deposited Cu crystals, while the average particle size increased with plating time depending on the additives used. Acration of the plating bath greatly retarded the undesired codeposition of Cu
2O in the presence of 2, 2'-dpy. XRD measurement showed no clear additive effect for PEG.
View full abstract
-
Takeshi SASAKI, Tatsuo ISHIKAWA
1992 Volume 43 Issue 5 Pages
457-461
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
In order to acquire spectra of organic materials adsorbed on electrode surfaces by
in situ infrared reflection absorption spectroscopy, several new techniques have been developed. The spectra of 2, 5-dihydroxythiophenol (DHT) and p-mercaptophenol (MP) adsorbed on polycrystalline gold electrodes were measured as a function of potential using these new
in situ IRRAS techniques.
The techniques developed in this work made it possible, in the fingerprint region, to monitor the changes in the vibrational properties of monolayer-adsorbed DHT and MP as a function of the applied potential. The overall spectral characteristics of both DHT and MP and their quinone derivatives in the adsorbed state closely resemble those of their solution-phase counterparts. The relatively high intensity of the signals observed for the adsorbed species provides strong evidence that both DHT and MP are adsorbed on gold with the molecular plane nearly perpendicular to the electrode surface and that their oxidation states change with potential change.
View full abstract
-
Sachio YOSHIHARA, Mieko OKAMOTO, Koji ENDO, Eiichi SATO
1992 Volume 43 Issue 5 Pages
462-466
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
A study was carried out using photothermal deflection spectroscopy (PDS)-also known as the Mirage method-to detect underpotential deposition (UPD) of lead on silver. A laser beam for activation was first passed through a liquid electrolyte to be absorbed at the solid/liquid interface. The laser probe grazed the surface of the solid and was deflected by the gradient in the liquid, so that absorbed light heated the electrode surface causing a gradient in the refractive index of the liquid. Beam deflection was detected by a position sensitive detector as a photothermal deflection (PD) signal. The silver electrodes used were polycrystal, single crystal (111) and single crystal (100). For the (111) surface a very sharp UPD peak appeared in the current-potential curve and the corresponding PD signal also showed relatively abrupt changes. For the (100) surface, on the other hand the PD signal showed a two-step change and decay was relatively gentle.
UPD was also investigated by electrochemical scanning tunneling microscopy, yielding
in situ STM images of the electrode surface in the solution. After UPD, the surface stepline of the STM images changed slightly and the height of the steps decreased. In addition corrugations appeared on the surface.
View full abstract
-
Yoichi HIROSE, Tsuneo KAMEDA, Toshihiko IIJIMA, Takeshi KIMURA
1992 Volume 43 Issue 5 Pages
467-471
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
A distinct electrical resistance change between a substrate and a torch has been found, that signals the nucleation and growth of diamond under the conditions of reverse bias in which the substrate is held at a negative potential to the torch. It appears that even the quality of diamond films and their deposition rates can be diagnosed using the profile of this resistance change. The results have been confirmed for a variety of substrate materials (Mo, Si, and Cu) over a wide range of synthesis conditions. A tentative model is proposed to explain the observed resistance change and interpret the above-mentioned phenomena. No such electrical resistance change has been observed under forward bias.
View full abstract
-
Masatoshi OSAWA, Naoki MATSUDA, Isamu UCHIDA
1992 Volume 43 Issue 5 Pages
472-477
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
The Adsorbed structure of mercaptobenzothiazole (MBT) at silver and copper electrode surfaces was investigated
in situ by surface-enhanced Raman scattering (SERS). The molecule has a thione-type structure in acidic solutions of pH<3 and an ionized-thiol-type structure in basic solutions of pH>9. Both types of MBT strongly adsorb on the electrodes through the sulfur atom. When thione-type MBT is adsorbed, the proton at the nitrogen atom is dissociated. In very strongly acidic solutions of pH<1, however, the adsorbed molecule is partly protonated. The protonation is enhanced by co-adsorbed halogen ions. The adsorbed MBT lies nearly flat at low coverages and stands nearly normal to the surface at high coverages.
View full abstract
-
Hiroyuki INOUE, Koji YAMAKAWA, Tetsuya KONDO, Seishi MASAKI
1992 Volume 43 Issue 5 Pages
478-480
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
A solution of silver methane sulfate and potassium iodide with HBPSA added was employed for the test solution and the electroplating bath. Differential capacity was found to decrease with increases in the concentration of HBPSA as did the grain size of the electrodeposits.
View full abstract
-
Masao MATSUOKA, Junichi MURAI, Chiaki IWAKURA
1992 Volume 43 Issue 5 Pages
481-482
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Michiko MAEDA, Sadako NAKAMURA
1992 Volume 43 Issue 5 Pages
483-484
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS
-
Yutaka TSURU, Masanori SEKITANI, Zyunichi NAKAMURA, Kunisuke HOSOKAWA
1992 Volume 43 Issue 5 Pages
485-486
Published: May 01, 1992
Released on J-STAGE: October 30, 2009
JOURNAL
FREE ACCESS