نتایج جستجو برای: ft sers

تعداد نتایج: 23031  

Colorectal cancer (CRC) is one of the leading cancers in the world and early-screening is still the best method of cancer patient survival. However, colonoscopy as the current gold standard is not without flaws and an emerging technique called surface-enhanced Raman spectroscopy (SERS) coupled with machine learning is a possible candidate that could be applied in parallel with colonoscopy. This...

Colorectal cancer (CRC) is one of the leading cancers in the world and early-screening is still the best method of cancer patient survival. However, colonoscopy as the current gold standard is not without flaws and an emerging technique called surface-enhanced Raman spectroscopy (SERS) coupled with machine learning is a possible candidate that could be applied in parallel with colonoscopy. This...

2013
Ujjal Kumar Sur Joydeep Chowdhury

This article describes recent developments in the field of surface-enhanced Raman scattering (SERS) research. It begins with the early history of SERS as the first SERS spectrum was obtained from an electrochemical system of pyridine molecule adsorbed on roughened silver electrode, which led to the discovery of the SERS effect in the mid-1970s. The article also illustrates the various aspects o...

Journal: :Chemical and Biological Technologies in Agriculture 2023

Abstract Background Plastic is one of the most widely used materials worldwide in various fields, including packaging and agriculture. Its large quantities require proper disposal for this reason more attention paid to issue degrading plastic. Thanks production non-specific enzymes, fungi are able attack complex recalcitrant xenobiotics such as plastics. In recent years, several spectroscopic m...

2009
Maria Vega Cañamares John R. Lombardi Marco Leona

The FT-Raman and surface-enhanced Raman (SER) spectra of two hydroxyl derivatives of flavone, namely 7-hydroxyflavone, 3’,4’-dihydroxyflavone, have been obtained. The importance of these compounds lies in the fact that they are simple precursors to the most important of the flavonoid dyes, such as quercetin. The SERS spectra were obtained on citrate reduced Ag colloids. Assignments of the exper...

2014
Jun Feng Wang Xue Zhong Wu Rui Xiao Pei Tao Dong Chao Guang Wang

A new high-performance surface-enhanced Raman scattering (SERS) substrate with extremely high SERS activity was produced. This SERS substrate combines the advantages of Au film over nanosphere (AuFON) substrate and Ag nanoparticles (AgNPs). A three order enhancement of SERS was observed when Rhodamine 6G (R6G) was used as a probe molecule to compare the SERS effects of the new substrate and com...

Journal: :journal of biomedical physics and engineering 0
m. saliminasab dental student, shiraz dental school, shiraz university of medical science, shiraz, iran a. r. bahrampour professor of physics, department of physics, sharif university of technology, tehran, iran m. h. zandi assistant professor of physics, department of physics, shahid bahonar university of kerman, kerman, iran

surface-enhanced raman spectroscopy (sers) is a promising tool in the analytical science because it provides good selectivity and sensitivity without the labeling process required by fluorescence detection. this technique consists of locating the target analyte on nanometer range of roughed au-nanoparticles. the presence of the metal nanoparticles provides a tremendous enhancement to the result...

2014
John P. Nolan Erika Duggan Danilo Condello

Nanoparticle surface enhanced Raman scattering (SERS) tags have attracted interest as labels for use in a variety of applications, including biomolecular assays. An obstacle to progress in this area is a lack of standardized approaches to compare the brightness of different SERS tags within and between laboratories. Here we present an approach based on binding of SERS tags to beads with known b...

ژورنال: :روانشناسی بالینی و شخصیت 0
محمدرضا شعیری m.r. shaeeri مهدیه عطری فرد m. atrifard tarbiat modarres universityدانشگاه تربیت مدرس آزیتا شمشادی a. shemshadi

هدف اساسی پژوهش حاضر, وارسی ساخت عاملی و جنبه های روانسنجی «مقیاس درجه بندی حرمت خود»(sers) است. بدین خاطر پس از انجام مراحل مقدماتی و رفع مشکلات احتمالی, وارسی این مقیاس در سه مطالعه انجام پذیرفت: در مطالعه اول، با اجرای مقیاس بر روی 322 دانشجوی دانشگاه شاهد که به شیوه نمونه برداری خوشه ای انتخاب شده بود, ساخت عاملی این ابزار با استفاده از تحلیل عاملی وریمکس (متعامد) بررسی گردید. نتایج این تحل...

2007
E. C. Le P. G. Etchegoin

This paper presents an in-depth study of Surface Enhanced Raman Scattering (SERS) enhancement factors (EFs) and cross-sections, including several issues often overlooked. In particular, various possible rigorous definitions of the SERS EFs are introduced and discussed in the context of SERS applications, such as analytical chemistry and single molecule SERS. These definitions highlight the impo...

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