ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-enhanced Raman scattering as a probe of surface geometry effects on the polymerization of a acrylic acid on silverJ. S. Suh and K. H. MichaelianCite this: J. Phys. Chem. 1987, 91, 3, 598–600Publication Date (Print):January 1, 1987Publication History Published online1 May 2002Published inissue 1 January 1987https://pubs.acs.org/doi/10.1021/j100287a022https://doi.org/10.1021/j100287a022research-articleACS PublicationsRequest reuse permissionsArticle Views179Altmetric-Citations32LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface geometry change in 2-naphthoic acid adsorbed on silverM. Moskovits and J. S. SuhCite this: J. Phys. Chem. 1988, 92, 22, 6327–6329Publication Date (Print):November 1, 1988Publication History Published online1 May 2002Published inissue 1 November 1988https://pubs.acs.org/doi/10.1021/j100333a030https://doi.org/10.1021/j100333a030research-articleACS PublicationsRequest reuse permissionsArticle Views567Altmetric-Citations250LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
볼타 전지에 대한 학생들의 오개념과 고등학교 화학 2 교과서에서 기술된 내용을 연구, 분석하였다. 볼타 전지에 대해 많은 학생들이 오개념을 가지고 있으며 몇몇 화학교과서의 경우 내용이 잘못 기술되어 있다는 것을 본 연구에서 밝혔다. 대부분의 교과서에는 볼타 전지의 초기 측정 전압이 왜 1.1V와 유사하며 시간이 지남에 따라 감소하는지에 대한 명확한 설명이 없다. 표준상태에서 볼타 전지의 기전력은 0.76V 이지만 어떤 교과서에는 다니엘 전지처럼 1.1V로 기술되어 있다. 대부분의 학생들은 볼타 전지를 배우거나 실험을 한 후에도 여전히 오개념을 가지고 있으며 이것은 적어도 다음 두 가지 요인에서 기인된다고 여겨진다. 첫째, 볼타 전지의 초기 측정 전위값이 다니엘 전지의 전위와 매우 유사하기 때문에 학생들이 혼동하여 오개념을 가진다. 둘째, 대부분 교과서의 볼타 전지 실험은 표준 상태가 아닌 조건에서 수행되도록 기술되어 있으므로 학생들이 실험을 하더라도 표준 상태 기전력값을 얻을 수 없기 때문에 여전히 오개념을 가지게 된다. 따라서 우리는 학생들의 오개념을 줄일 수 있는 개선된 볼타 전지의 실험 모형을 제안하였다. Misconceptions of students for a Voltaic cell were studied and their contents described in the high school chemistry II textbooks were analyzed. This study shows that students have many misconceptions and a few of chemistry textbooks contain some false description in a Voltaic cell. In the most textbooks, the reasons why the measured cell voltage of a Voltaic cell is near 1.1 V at the initial stage and then it decreases with time are not explained clearly. The emf of a Voltaic cell at a standard state is 0.76 V but in some textbooks it is described as 1.1 V of a Daniel cell. Even after learning the Voltaic cell or performing the experiment of textbooks, most students still have some misconceptions. These may be due to at least two following facts: the first is that the measured cell voltage of a Voltaic cell at the initial stage is very similar to that of a Daniel cell. The second is that the most experiment of a Voltaic cell is not performed under the condition of a standard state. Therefore, we have suggested a model of the modified experimental setup of a Voltaic cell that could reduce misconceptions of students.
We have fabricated hexagonally patterned silver nanoparticles for surface‐enhanced Raman scattering (SERS) by electrodepositing silver on the surface of an aluminum plate prepared by completely removing the oxide from anodic aluminum oxide (AAO) templates. Even after completely removing the oxide, well‐ordered hexagonal patterns, similar to the shape of graphene, remained on the surface of the aluminum plate. The borders of the hexagonal pattern protruded up to form sorts of nano‐mountains at both the sides and apexes of the hexagon, with the apexes protruding even more significantly than the sides. The aluminum plate prepared by completely removing the oxide has been used in the preparation of SERS substrates by sputter‐coating of gold or silver on it. Instead of sputter‐coating, here we have electro‐deposited silver on the aluminum plate. When silver was electro‐deposited on the plate, silver nanoparticles were made along the hexagonal margins.
We have developed a method for fabricating a good carbon nanotube (CNT) field emitter using electrophoretic deposition and fissure formation techniques. A thin film of CNTs was deposited on a Ti substrate, by electrophoresis, from an aqueous mixture of CNT and detergent, dried naturally, and then pressed on the surface to make it smooth. By firing, it was changed to numerous microsized islands. As a result very clean CNT tips were generated from the fissures formed. The film showed good field emission properties. Our method affords a process of simple steps and does not need any postdeposition or activation process for field emission.
Temporal changes in the surface-enhanced Raman scattering (SERS) of 4-vinylbenzoic acid (4vba) adsorbed on silver colloid surfaces were studied using a method in which the solution of the adsorbate-covered colloid solution flowed through a capillary at differing rates. In this way the photochemical effect of the illuminating laser was studied quantitatively. 4vba appears to exist on the colloid surface in two forms: one that photodesorbs under the influence of the laser and one that does not. An analysis of the SERS spectra suggests that the former adopts a surface geometry in which the benzene ring and carboxylate group are adsorbed flat on surface but where the vinyl group is not bonded directly to the surface. In the latter, all three groups are adsorbed on surface simultaneously: the benzene and vinyl groups are π-bonded, while the carboxylate group is adsorbed through a nonbonding electron pair of one of its oxygens. The photodesorption rate constant was found to be proportional to laser power. Its value was found to be large in the visible region of the spectrum, increasing toward the blue; hence, the photodesorption mechanism is likely initiated by a metal to adsorbate charge-transfer absorption.
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