Download or read book New Microfabricated Tools for Electrochemical Imaging and Sensing written by Todd Johnathan Anderson and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation covers the development of microfabricated bipolar ultramicroelectrode arrays consisting of many thousands of individually addressable electrodes to enable high resolution electrochemical imaging. Two different devices are presented and discussed prior to characterization in several proof-of-concept experiments, after which one of the array designs is utilized in the creation of a high-throughput electrocatalyst screening platform. Additionally, a micromachining procedure for the fabrication of glass-supported solid-state nanopore substrates is introduced. Chapter 1 opens with an introduction to various electrochemical imaging techniques and examines bipolar coupling to an optical reporter reaction as a method for simultaneously reading the current through very dense electrode arrays. The advantages of such a scheme are further explored from the perspective of efficient electrocatalytic screening before the chapter concludes with a discussion of possible solutions to the issues associated with high frequency biomolecule detection via resistive pulse sensing in solid-state nanopores. Chapter 2 then presents a submicron bipolar microelectrode array design which utilizes interfering laser beams to generate the requisite periodic electrode patterns. The shortcomings of this design are addressed in Chapter 3 with the fabrication of an updated device which is used to image several dynamic electrochemical systems via an alternate imaging scheme. This updated device is further utilized in Chapter 4 as a platform for highly parallelized screening of compositionally varied electrocatalyst samples. Chapter 5 then closes this dissertation with the introduction of a novel microfabrication method for freestanding SiNx membranes on glass chips as a means of eliminating the capacitive noise effects associated with semiconductor/insulator interfaces in high bandwidth solid-state nanopore measurements.

Download or read book Application of Microfabrication in Electrochemical Sensing written by Susan Carroll and published by . This book was released on 2011 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, micro fabrication techniques are explored not only to simplify the production of complex lab on-a-chip devices (LOC), but also micro fabrication will be utilized to create intelligent design features that will enhance an electrochemical sensor's capabilities. First, a low temperature adhesive bonding procedure for LOC glass devices was evaluated for capillary electrophoresis (CE) applications. This low temperature method utilizes UV adhesive to bond the glass microchips under the assistance of a mask aligner. The bonding process was carried out at room temperature in 30 minutes, and provided a near 100% success rate. Microchips exhibited similar electroosmotic flow, separation characteristics, stable long-term performance, excellent chip-to-chip reproducibility, as their thermally bonded counter parts. This bonding approach required new but easily implemented structural features. In addition to cost effective and reliable fabrication techniques, microchips designed for long-term unattended electrochemical sensing have been evaluated. Specific advantages of the micro fabrication approach include the capability to create an intelligent design containing features such as redundant sensing electrodes, on-chip reference and auxiliary electrodes, and in situ electrode regeneration/calibration. One system targeted involves continuous pH monitoring in drinking water at solid-state iridium oxide electrodes. Microchips utilized consist of a flow-through silicon platform containing patterned gold electrodes onto which iridium oxide was deposited electrochemically. To simulate drinking water detection scenarios, sensors were integrated into a flow system. Elven equivalent pH electrodes where evaluated for electrode-to-electrode reproducibility, long-term drift, and response to expected interfering agents. With on-chip voltage treatment, absolute potentials measured for an electrode array are within ± 4 mY, with identical (±1 mY/pH unit) calibration slopes. This performance level is sustainable over weeks. Sensors for exhaustive coulometry were designed, fabricated and evaluated. Microchips contained thin-film gold working and Ag/AgCI pseudo-reference electrodes. A custom flow cell containing a counter electrode chamber was constructed to integrate the sensor and to create an electrolysis chamber with a fixed volume. Different chip designs were evaluated for reproducibility and longevity using Fe(CN)63-/4- as model analytes. The relative standard deviation (RSD) for a chip (over 42 days) was 5.5% whereas the sensor-to-sensor reproducibility was within 6.3%. A more practical application for utilizing exhaustive coulometry by the determination of free chlorine in drinking water is briefly evaluated. Initially studies will outline the challenges involved by analyzing hypochlorite.

Download or read book Wearable Sensors and Systems 1 and Microfabricated and Nanofabricated Systems for MEMS NEMS 14 written by A. Kholsa and published by The Electrochemical Society. This book was released on 2018-09-21 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tools for Flexible Electrochemical Microfabrication written by Weihua Wang and published by . This book was released on 2002 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Trends in Quorum Sensing and Quorum Quenching written by V. Ravishankar Rai and published by CRC Press. This book was released on 2020-05-04 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book on Trends in Quorum Sensing and Quorum Quenching: New Perspectives and Applications focuses on the recent advances in the field of quorum sensing in bacteria and the novel strategies developed for quorum sensing inhibition. The topics covered are multidisciplinary and wide-ranging,and includes quorum sensing phenomenon in pathogenic bacteria, food spoilers, and agriculturally relevant bacteria. The applications of quorum sensing inhibitors such as small molecules, bioactives, natural compounds, and quorum quenching enzymes in controlling bacterial infections in clinical settings, agriculture and aquaculture are discussed. The potential use of quorum quenching enzymes for mitigating biofouling is also covered. Special focus is given to exploring quorum sensing inhibitors from microbes and flora inhabiting biodiversity rich regions including tropical rain forests and marine environments. Key features: Covers the fundamental aspects, the progress and challenges in the field of quorum sensing and quorum quenching Reviews quorum sensing in Gram-positive and Gram-negative bacteria of clinical, agricultural, and industrial relevance Discusses the application and future trends of quorum sensing inhibitors from lab to clinical and environmental settings Provides comprehensive coverage on molecular mechanisms in bacterial signaling

Download or read book Microfabricated Systems and MEMS VII written by and published by The Electrochemical Society. This book was released on 2004 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Integrated Microfabricated Biodevices written by Michael J. Heller and published by CRC Press. This book was released on 2002-01-03 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the new generation of integrated microfabricated devices, including DNA chips, Lab-on-a-Chip, microcapillary electrophoresis systems, biosensors, and microanalytical systems. It traces their development with the established and evolving technologies such as microlithography, micromachining, microelectromechanical systems, microfluids, and nanotechnology.

Download or read book Medical Imaging and Computer Aided Diagnosis written by Ruidan Su and published by Springer Nature. This book was released on 2020-07-02 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers virtually all aspects of image formation in medical imaging, including systems based on ionizing radiation (x-rays, gamma rays) and non-ionizing techniques (ultrasound, optical, thermal, magnetic resonance, and magnetic particle imaging) alike. In addition, it discusses the development and application of computer-aided detection and diagnosis (CAD) systems in medical imaging. Given its coverage, the book provides both a forum and valuable resource for researchers involved in image formation, experimental methods, image performance, segmentation, pattern recognition, feature extraction, classifier design, machine learning / deep learning, radiomics, CAD workstation design, human–computer interaction, databases, and performance evaluation.

Download or read book Biomedical Index to PHS supported Research written by and published by . This book was released on 1987 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nano and Microfabrication for Industrial and Biomedical Applications written by Regina Luttge and published by William Andrew. This book was released on 2016-06-12 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano- and Microfabrication for Industrial and Biomedical Applications, Second Edition, focuses on the industrial perspective on micro- and nanofabrication methods, including large-scale manufacturing, the transfer of concepts from lab to factory, process tolerance, yield, robustness, and cost. The book gives a history of miniaturization and micro- and nanofabrication, and surveys industrial fields of application, illustrating fabrication processes of relevant micro and nano devices. In this second edition, a new focus area is nanoengineering as an important driver for the rise of novel applications by integrating bio-nanofabrication into microsystems. In addition, new material covers lithographic mould fabrication for soft-lithography, nanolithography techniques, corner lithography, advances in nanosensing, and the developing field of advanced functional materials. Luttge also explores the view that micro- and nanofabrication will be the key driver for a "tech-revolution" in biology and medical research that includes a new case study that covers the developing organ-on-chip concept. - Presents an interdisciplinary approach that makes micro/nanofabrication accessible equally to engineers and those with a life science background, both in academic settings and commercial R&D - Provides readers with guidelines for assessing the commercial potential of any new technology based on micro/nanofabrication, thus reducing the investment risk - Updated edition presents nanoengineering as an important driver for the rise of novel applications by integrating bio-nanofabrication into microsystems

Download or read book Liquid Cell Electron Microscopy written by Frances M. Ross and published by Cambridge University Press. This book was released on 2017 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2.6.2 Electrodes for Electrochemistry

Download or read book Nanoscience And Technology A Collection Of Reviews From Nature Journals written by Peter Rodgers and published by World Scientific. This book was released on 2009-08-21 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 35 review articles on nanoscience and nanotechnology that were first published in Nature Nanotechnology, Nature Materials and a number of other Nature journals. The articles are all written by leading authorities in their field and cover a wide range of areas in nanoscience and technology, from basic research (such as single-molecule devices and new materials) through to applications (in, for example, nanomedicine and data storage).

Download or read book Forensic Investigation of Explosions Second Edition written by Alexander Beveridge and published by CRC Press. This book was released on 2011-11-02 with total page 832 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its second edition, Forensic Investigation of Explosions draws on the editor’s 30 years of explosives casework experience, including his work on task forces set up to investigate major explosives incidents. Dr. Alexander Beveridge provides a broad, multidisciplinary approach, assembling the contributions of internationally recognized experts who present the definitive reference work on the subject. Topics discussed include: The physics and chemistry of explosives and explosions The detection of hidden explosives The effect of explosions on structures and persons Aircraft sabotage investigations Explosion scene investigations Casework management The role of forensic scientists Analysis of explosives and their residues Forensic pathology as it relates to explosives Presentation of expert testimony With nearly 40 percent more material, this new edition contains revised chapters and several new topics, including: A profile of casework management in the UK Forensic Explosives Laboratory, one of the world’s top labs, with a discussion of their management system, training procedures, and practical approaches to problem solving Properties and analysis of improvised explosives An examination of the Bali bombings and the use of mobile analytical techniques and mobile laboratories The collection, analysis, and presentation of evidence in vehicle-borne improvised explosive device cases, as evidenced in attacks on US overseas targets This volume offers valuable information to all members of prevention and post-blast teams. Each chapter was written by an expert or experts in a specific field and provides well-referenced information underlying best practices that can be used in the field, laboratory, conference room, classroom, or courtroom.

Download or read book Surface modified Nanobiomaterials for Electrochemical and Biomedicine Applications written by Alain R. Puente-Santiago and published by Springer Nature. This book was released on 2020-07-27 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.

Download or read book Biomedical Index to PHS supported Research pt A Subject access A H written by and published by . This book was released on 1994 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biosensors and Biodetection written by Ben Prickril and published by Humana. This book was released on 2017-03-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides comprehensive and detailed technical protocols on current biosensor and biodetection technologies and examples of their applications and capabilities. Chapters in Biosensors and Biodetection: Methods and Protocols Volume 2, Electrochemical, Bioelectronic, Piezoelectric, Cellular and Molecular Biosensors, Second Edition focus on electrochemical biosensors including amperometric, impedance and voltammetric sensors, bioelectronic, piezoelectric, cellular, and molecular biosensors. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, tips on troubleshooting and avoiding known pitfalls, and step-by-step, readily reproducible laboratory protocols. Authoritative and practical, Biosensors and Biodetection: Methods and Protocols Volume 2: Electrochemical, Bioelectronic, Piezoelectric, Cellular and Molecular Biosensors, Second Edition offers descriptions of major technologies by leading experts in the field in extensive technical detail. The aim of the book is to make biosensors more accessible and understandable to engineers, students, medical professionals, molecular biologists, chemical, and physical science researchers developing biosensor technologies, allowing readers to both understand the technology and to construct similar devices.

Download or read book Biosensing with Silicon written by Enakshi Bhattacharya and published by Springer Nature. This book was released on 2022-01-01 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses two silicon biosensors: an electrochemical sensor – the Electrolyte Insulator Silicon Capacitor (EISCAP), and a mechanical resonant cantilever sensor. The author presents the principle and the technology behind the device fabrication and miniaturization, stable and reproducible functionalization protocols for bioreceptor immobilization, and the measurement and the data analysis for extracting the best performance from these sensors. EISCAP sensors, used for the estimation of triglycerides and urea, have been improved through the use of micromachining processes. The miniaturization brought out advantages as well as challenges which are discussed in this book, resulting in a prototype mini-EISCAP with a readout circuit for fast and accurate estimation of triglycerides. The author also reports on the sensitivity improvements in the estimation of triglycerides and urea obtained with the polycrystalline silicon cantilever and its measurements in liquid media. The book is ideal for materials scientists and engineers working in the field of biosensors and MicroElectroMechanical systems (MEMS) and their optimizations, as well as researchers with biochemical or biomedical expertise, in order to have a fresh and updated review on the last progresses reached with EISCAPs and cantilever sensors.