Download or read book Surface Enhanced Raman Scattering Detection of DNA Assemblies in Solution written by Michael Bellavia and published by . This book was released on 2013 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Enhanced Raman Scattering New Theoretical Approaches Materials and Strategies written by Ivano Alessandri and published by Frontiers Media SA. This book was released on 2020-03-25 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Enhanced Raman Spectroscopy written by Marek Prochazka and published by Springer. This book was released on 2015-12-12 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of recent developments in RS and SERS for sensing and biosensing considering also limitations, possibilities and prospects of this technique. Raman scattering (RS) is a widely used vibrational technique providing highly specific molecular spectral patterns. A severe limitation for the application of this spectroscopic technique lies in the low cross section of RS. Surface-enhanced Raman scattering (SERS) spectroscopy overcomes this problem by 6-11 orders of magnitude enhancement compared with the standard RS for molecules in the close vicinity of certain rough metal surfaces. Thus, SERS combines molecular fingerprint specificity with potential single-molecule sensitivity. Due to the recent development of new SERS-active substrates, labeling and derivatization chemistry as well as new instrumentations, SERS became a very promising tool for many varied applications, including bioanalytical studies and sensing. Both intrinsic and extrinsic SERS biosensing schemes have been employed to detect and identify small molecules, nucleic acids and proteins, and also for cellular and in vivo sensing.

Download or read book Surface enhanced Raman Scattering of Nanostructured Assemblies written by Kyle W. Kimble and published by . This book was released on 2001 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book DNA Diagnostic Assays Using Surface Enhanced Raman Scattering SERS written by Mhairi Harper and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: DNA is the prerequisite for all biological life and its discovery has revolutionised the understanding of biomolecular interactions and disease expression. This has enabled significant improvements in patient diagnosis and medical treatment to be carried out. The advancements in technology and instrumentation have continually progressed this knowledge and continue to push the boundaries of diagnostic and clinical advancements. One effective way to achieve this is through application of dye labelled DNA sequences and metallic nanoparticle suspensions. This research details an understanding of the interaction between dye labelled oligonucleotides and silver nanoparticle surfaces, which generate strong surface enhanced Raman scattering (SERS) responses through specific hybridisation events which correlate to the presence of targeted sequences. During this study, the attraction of oligonucleotides onto metal nanoparticles was shown to be driven through the DNA nucleobases. Therefore, the increased exposure of the base groups within single stranded DNA sequences generated a higher affinity for metal surfaces which in turn produced stronger SERS responses when compared to double stranded DNA. This principle was utilised within a DNA detection assay to successfully demonstrate the presence of target DNA sequences. Two novel DNA detection assays were also investigated which utilised SERS to determine the presence of sequences relating to the methicillin resistant Staphylococcus aureus (MRSA) strain. A solution based detection method was developed through coupling a TaqMan assay with SERS. This combination enabled highly specific detection of clinically relevant sequences of MRSA to be obtained with 7 fM limits of detection achievable. The multiple detection of different genomic S. aureus strains was achieved through the molecularly specific and narrow emission spectral profiles obtained. A contrasting DNA detection strategy which relies upon the hybridisation of complementary sequences on a solid substrate surface was shown. Silver nanoparticles were functionalised with specific DNA sequences and a variety of SERS active molecules, enabling the selective detection of target sequences from nitrocellulose membranes. This thesis has exploited SERS to enable the specific identification of DNA sequences to be achieved via utilisation of silver nanoparticles. Through SERS, an insight into the interactions of DNA and silver nanoparticles surfaces has been gained as well as enhancing the sensitivity and specificity achievable within SERS detection assays.

Download or read book Surface Enhanced Raman Spectroscopy Biosensing and Diagnostic Technique for Healthcare Applications written by Swati Jain and published by Bentham Science Publishers. This book was released on 2021-12-28 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface enhanced Raman spectroscopy (SERS) is a technique applied in multidisciplinary research. Its use has tremendously grown in the last 40 years owing to improved nanofabrication, biomolecules extraction and sensitive signal acquisition techniques. This book focuses on the underlying principles of SERS by emphasizing on basic concepts and background information about the subject. Chapters explain the physics of Raman spectroscopy while also indicating its relevance to designing protocols and methodologies for biosensing and imaging. The book gives updated and recent details on colloids and nanostructures, their fabrication, surface engineering and immobilization methods, all in context to SERS based biosensing. Key Features: - Covers basic knowledge and new research about surface enhanced Raman spectroscopy (SERS) - Provides a complete framework on SERS based biosensing with concise chapters - Focuses on different active molecules critical to SERS and associated developed nanoassemblies - Presents information about ongoing research on SERS imaging applications - Highlights bottlenecks of SERS technique in biosensing - Includes references for further reading This book serves as a reference book for researchers and academicians and will also provide a reasonable understanding on the topic of SERS to newcomers irrespective of their background in a simple manner. The book is of interest to all readers within the scientific community involved with Raman spectroscopy, including chemists, physicists, biologists, material scientists as well as biomedical engineers.

Download or read book Surface enhanced Raman Scattering Based Biosensor Platforms for Viral DNA Detection written by Hao Zhang and published by . This book was released on 2011 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: SERS based DNA biosensors have recently gained considerable attention for detection of target gene sequences related to diseases in medicine, the food industry, the environment and agriculture. In this work, we developed three nanoparticle based SERS assays for detection of viral DNA. First, an indirect capture model assay using Au nanoparticles was demonstrated for SERS detection of DNA derived from the West Nile Virus (WNV) RNA genome. Upon incubation with colloidal Au, hybridization complexes containing the WNV target sequence, a complementary capture oligonucleotide conjugated to a strong tethering group and a complementary reporter oligonucleotide conjugated to methylene blue (MB), a Raman label, anchors the resultant ternary complex to Au nanoparticles and positions MB within the required sensing distance for SERS enhancement. The SERS test provides a spectral peak signature profile that is capture-specific and characteristic of the Raman spectrum for MB. The next study decribes a model paramagnetic nanoparticle (MNP) assay that is demonstrated for SERS detection of WNV target DNA sequence. Detection is based on the capture of WNV target sequences by hybridization with complementary oligonucleotide probes covalently linked to fabricated MNPs and Raman reporter tag-conjugated gold nanoparticles (GNPs) and the subsequent removal of GNP-WNV target sequence-MNP hybridization complexes from solution by an externally applied magnetic source. Laser excitation of the pelleted material provided a signature SERS spectrum which is diagnostic for the reporter, 5,5 feet-dithiobis(succinimidy-2-nitrobenzoate) (DSNB), and restricted to hybridization reactions containing WNV target sequences. Finally, we developed a magnetic capture-based SERS assay for the viral DNA multiplex detection in solution using Au-coated paramagnetic nanoparticles as SERS-active capture substrates and Raman tag-conjugated oligos as reporter probes. Using the DNA derived from the Rift Valley Fever Virus (RVFV) and West Nile Virus (WNV) RNA genome, WNV as the model targets, monoplex and multiplex SERS detection were designed and demonstrated.

Download or read book Detection of Non Amplified Genomic DNA written by Giuseppe Spoto and published by Springer Science & Business Media. This book was released on 2012-07-06 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an overview of state-of-the-art in non amplified DNA detection methods and provides chemists, biochemists, biotechnologists and material scientists with an introduction to these methods. In fact all these fields have dedicated resources to the problem of nucleic acid detection, each contributing with their own specific methods and concepts. This book will explain the basic principles of the different non amplified DNA detection methods available, highlighting their respective advantages and limitations. Non-amplified DNA detection can be achieved by adopting different techniques. Such techniques have allowed the commercialization of innovative platforms for DNA detection that are expected to break into the DNA diagnostics market. The enhanced sensitivity required for the detection of non amplified genomic DNA has prompted new strategies that can achieve ultrasensitivity by combining specific materials with specific detection tools. Advanced materials play multiple roles in ultrasensitive detection. Optical and electrochemical detection tools are among the most widely investigated to analyze non amplified nucleic acids. Biosensors based on piezoelectric crystal have been also used to detect unamplified genomic DNA. The main scientific topics related to DNA diagnostics are discussed by an outstanding set of authors with proven experience in this field.

Download or read book SERS for Point of care and Clinical Applications written by Andrew Fales and published by Elsevier. This book was released on 2022-08-12 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: SERS for Point-of-care and Clinical Applications focuses on the use of Surface-Enhanced Raman Spectroscopy (also known as Surface-Enhanced Raman Scattering) techniques in clinical and point-of-care settings. Sections provide an overview of SERS biomedical applications, providing in-depth information about point-of-care and clinical applications of SERS using specific examples from current literature. These applications are not always immediately evident to newcomers in the field, as Raman and SERS are often introduced as analytical methods for chemical analysis. This book offers a concise introduction to the biomedical applications of SERS for graduate students, scientists and researchers in all related fields. Highlights point-of-care applications for SERS Covers the recent biomedical applications of SERS carried out by leaders in the field Includes chapters on SERS probes and labels and label-free uses of SERS

Download or read book Novel Enzymatic Methods of DNA Detection Using Enhanced Raman Scattering written by Kristy Stephanie McKeating and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the years there have been a number of significant advances in DNA detection. In particular the advent of the Polymerase Chain Reaction (PCR) has enabled extremely low levels of DNA to be amplified and quantified, and along with fluorescence based detection measurements, has provided a reliable method of detecting genomic concentrations of DNA. However, throughout the years it has become apparent that although successful, these techniques have inherent complications that cannot be ignored in a research field as progressive as medical diagnostics. As a result, the future of biomolecule detection relies on the development of novel techniques that are able to eliminate the problems associated with conventional detection methods. Detection methods amenable to this goal include oligonucleotide nanoparticle conjugates for colorimetric DNA detection, and surface enhanced resonance Raman scattering (SERRS), which provides improved sensitivity in comparison to fluorescence along with the potential for multiplexed analysis. Additionally, the use of enzymes in DNA detection to provide a method of target cycling and signal amplification provides a path toward amplification free analysis. The overall aim of this research was to develop novel methods for the detection of DNA based on enzymatic activity. This primarily involved implementing the enzyme lambda exonuclease in a target cycling strategy, alongside DNA labelled with a donor and acceptor FRET pair for use in fluorescence detection. This enzyme was also utilised within a nanoparticle assembly system, whereby oligonucleotides were conjugated to gold and silver nanoparticles for use in SERRS analysis. Finally, alternative enzymatic processes were investigated for the detection of DNA using resonance Raman and surface enhanced resonance Raman scattering. The catalytic activity of a DNAzyme on certain peroxidase substrates was investigated and used within a catalytic beacon assay protocol for the detection of DNA. Also, the enzymatic activity of gold and silver nanoparticles was investigated and their potential as enzyme mimetics for analyte detection was examined.

Download or read book Surface Enhanced Raman Spectroscopy for Biophysical Applications written by Claudia Fasolato and published by Springer. This book was released on 2018-12-05 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explores the phenomenon of surface-enhanced Raman scattering (SERS), the huge amplification of Raman signal from molecules in the proximity of a metallic nanostructured surface, allowing readers to gain an in-depth understanding of the mechanisms affecting the spectroscopic response of SERS-active systems for effective applications. SERS spectroscopy is an ultrasensitive analytical technique with great potential for applications in the field of biophysics and nanomedicine. As examples, the author presents the design of nanocolloid-based SERS-active substrates for molecular sensing and of a folate-based SERS-active nanosensor capable of selectively interacting with cancer cells, enabling cancer diagnostics and therapy at the single-cell level. The author also suggests novel paths for the systematization of the SERS nanosystem design and experimental protocols to maximize sensitivity and reproducibility, which is essential when real-world biomedical applications are the goal of the study. With a combined approach, both fundamental and applied, and a detailed analysis of the state of the art, this book provides a valuable overview both for students new to SERS spectroscopy and for experts in the field.

Download or read book Surface Enhanced Vibrational Spectroscopy written by Ricardo Aroca and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Enhanced Vibrational Spectroscopy (SEVS) has reached maturity as an analytical technique, but until now there has been no single work that describes the theory and experiments of SEVS. This book combines the two important techniques of surface-enhanced Raman scattering (SERS) and surface-enhanced infrared (SEIR) into one text that serves as the definitive resource on SEVS. Discusses both the theory and the applications of SEVS and provides an up-to-date study of the state of the art Offers interpretations of SEVS spectra for practicing analysts Discusses interpretation of SEVS spectra, which can often be very different to the non-enhanced spectrum - aids the practicing analyst

Download or read book Surface Enhanced Raman Scattering written by Zhong-Qun Tian and published by John Wiley & Sons Incorporated. This book was released on 2010-06-14 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-Enhanced Raman Spectroscopy: Principles, Experiments, and Applications is a comprehensive, up to date, and balanced treatment of the theoretical and practical aspects of Surface-Enhanced Raman Scattering (SERS), a useful branch of spectroscopy for several areas of science. This book describes the basic principles of SERS, including SERS mechanisms, performing SERS measurements, and interpreting data. Also emphasized are applications in electrochemistry; catalysis; surface processing and corrosion; Self-Assemble-Layer and L-B Films; polymer science; biology; medicine and drug analysis; sensors; fuel cells; forensics; and archaeology. It is an essential guide for student and professional analytical chemists.

Download or read book Detection of DNA Components and DNA Sequences by Surface enhanced Raman Spectroscopy written by E. Papadopoulou and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Enhanced Raman Scattering Based Assays for DNA Detection by written by Danny van Lierop and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Raman Spectroscopy for Nanomaterials Characterization written by Challa S.S.R. Kumar and published by Springer Science & Business Media. This book was released on 2012-03-30 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: First volume of a 40-volume series on nanoscience and nanotechnology, edited by the renowned scientist Challa S.S.R. Kumar. This handbook gives a comprehensive overview about Raman spectroscopy for the characterization of nanomaterials. Modern applications and state-of-the-art techniques are covered and make this volume essential reading for research scientists in academia and industry.

Download or read book Frontiers of Surface Enhanced Raman Scattering written by Yukihiro Ozaki and published by John Wiley & Sons. This book was released on 2014-02-19 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive presentation of Surface-Enhanced Raman Scattering (SERS) theory, substrate fabrication, applications of SERS to biosystems, chemical analysis, sensing and fundamental innovation through experimentation. Written by internationally recognized editors and contributors. Relevant to all those within the scientific community dealing with Raman Spectroscopy, i.e. physicists, chemists, biologists, material scientists, physicians and biomedical scientists. SERS applications are widely expanding and the technology is now used in the field of nanotechnologies, applications to biosystems, nonosensors, nanoimaging and nanoscience.