Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Guided Shear Horizontal Surface Acoustic Wave Sh Saw Chemical Sensors For Detection Of Organic Contaminants In Aqueous Environments PDF full book. Access full book title Guided Shear Horizontal Surface Acoustic Wave Sh Saw Chemical Sensors For Detection Of Organic Contaminants In Aqueous Environments.
| Author | : Zhonghui Li |
| Publisher | : |
| Total Pages | : 422 |
| Release | : 2005 |
| Genre | : Acoustic surface wave devices |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 6 |
| Release | : 1999 |
| Genre | : |
| ISBN | : |
Chemically sensitive polymers coated on delay lines utilizing shear horizontal surface acoustic wave (SH-SAW) sensors are investigated for the detection of organic analytes in liquid environments. The SH-SAW sensor platform was designed and fabricated on 36° rotated Y-cut LiTaO3. By depositing a SiO2 dielectric layer over the entire device prior to applying the polymer film, partial electrical passivation of the interdigital transducers (IDT) is obtained while increasing the mass sensitivity of the device. Changes in the mechanical properties of the chemically sensitive polymer materials were clearly detectable through a frequency shift at least one order of magnitude larger than that of a coated-quartz crystal resonator (QCR) in a similar experiment.
| Author | : Manoj Kumar Ram |
| Publisher | : CRC Press |
| Total Pages | : 390 |
| Release | : 2018-10-03 |
| Genre | : Technology & Engineering |
| ISBN | : 1420005049 |
In recent years, sensor research has undergone a quiet revolution that will have a significant impact on a broad range of applications in areas such as health care, the environment, energy, food safety, national security, and manufacturing. Sensors for Chemical and Biological Applications discusses in detail the potential of chemical and biological sensors and examines how they are meeting the challenges of chem-bio terrorism by monitoring through enhanced specificity, fast response times, and the ability to determine multiple hazardous substances. Exploring the nanotechnology approach, and carrying this theme throughout the book, the chapters cover the sensing principles for, chemical, electrical, chromatographic, magnetic, biological, fluidic, optical, and ultrasonic and mass sensing systems. They address issues associated with cost, synthesis, and testing of new low cost materials with high sensitivity, selectivity, robustness, and speed for defined sensor applications. The book extensively discusses the detailed analysis of future impact of chemical and biological sensors in day-to-day life. Successful development of improved chemical sensor and biosensor systems and manufacturing procedures will not only increase the breadth and depth of the sensor industry, but will spill over into the design and manufacture of other types of sensors and devices that use nanofabrication and microfabrication techniques. This reference not only supplies versatile, hands-on tools useful in a broad array of disciplines, but also lays the interdisciplinary groundwork required for the achievement of sentient processing.
| Author | : |
| Publisher | : World Scientific |
| Total Pages | : 1446 |
| Release | : 2022-09-16 |
| Genre | : Science |
| ISBN | : 9811245916 |
Water is an indispensable resource for our society. Essential to sustaining life and economic prosperity, water is also the basic component for manufacturing almost everything to keep society alive, including energy, food, clothing, cars, and electronics, among many other examples. It is, thus, an integral part of our lives beyond simply quenching our thirst. In addition, our future economy and security highly depend upon the availability of clean water. Yet given its critical importance, there is a limited supply of renewable freshwater across the globe and there is no substitute. Global population and economic growth, urbanization, and climate change further exacerbate the increasing stress on freshwater supplies. As such, society urgently needs to find the scientific and engineering solutions to more efficiently manage our precious water resources. The volumes of this multi-volume reference cover the latest scientific advancements and solutions in managing and treating this crucial resource.Related Link(s)
| Author | : |
| Publisher | : |
| Total Pages | : 794 |
| Release | : 2005 |
| Genre | : Dissertations, Academic |
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| Total Pages | : |
| Release | : 2013 |
| Genre | : |
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A Love wave sensor uses a single-phase unidirectional interdigital transducer (IDT) on a piezoelectric substrate for leaky surface acoustic wave generation. The IDT design minimizes propagation losses, bulk wave interferences, provides a highly linear phase response, and eliminates the need for impedance matching. As an example, a high frequency (.about. 300-400 MHz) surface acoustic wave (SAW) transducer enables efficient excitation of shear-horizontal waves on 36.degree. Y-cut lithium tantalate (LTO) giving a highly linear phase response (2.8.degree. P-P). The sensor has the ability to detect at the pg/mm.sup. 2 level and can perform multi-analyte detection in real-time. The sensor can be used for rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms.
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| Total Pages | : |
| Release | : 2014 |
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| ISBN | : |
A biosensor combining the sensitivity of surface acoustic waves (SAW) generated at a frequency of 325 MHz with the specificity provided by antibodies and other ligands for the detection of viral agents. In a preferred embodiment, a lithium tantalate based SAW transducer with silicon dioxide waveguide sensor platform featuring three test and one reference delay lines was used to adsorb antibodies directed against Coxsackie virus B4 or the negative-stranded category A bioagent Sin Nombre virus (SNV). Rapid detection of increasing concentrations of viral particles was linear over a range of order of magnitude for both viruses, and the sensor's selectivity for its target was not compromised by the presence of confounding Herpes Simplex virus type 1 The biosensor was able to delect SNV at doses lower than the load of virus typically found in a human patient suffering from hantavirus cardiopulmonary syndrome (HCPS).
| Author | : |
| Publisher | : |
| Total Pages | : 5 |
| Release | : 1997 |
| Genre | : |
| ISBN | : |
This paper describes several recent advances for fabricating coated surface acoustic wave (SAW) sensors for applications requiring trace chemical detection. Specifically, we have demonstrated that high surface area microporous oxides can provide 100-fold improvements in SAW sensor responses compared with more typical polymeric coatings. In addition, we fabricated GaAs SAW devices with frequencies up to 500 MHz to provide greater sensitivity and an ideal substrate for integration with high-frequency electronics.
| Author | : Nina R. Smith |
| Publisher | : |
| Total Pages | : 258 |
| Release | : 2010 |
| Genre | : Acoustic surface wave devices |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 74 |
| Release | : 2008 |
| Genre | : |
| ISBN | : |
The rapid autonomous detection of pathogenic microorganisms and bioagents by field deployable platforms is critical to human health and safety. To achieve a high level of sensitivity for fluidic detection applications, we have developed a 330 MHz Love wave acoustic biosensor on 36{sup o} YX Lithium Tantalate (LTO). Each die has four delay-line detection channels, permitting simultaneous measurement of multiple analytes or for parallel detection of single analyte containing samples. Crucial to our biosensor was the development of a transducer that excites the shear horizontal (SH) mode, through optimization of the transducer, minimizing propagation losses and reducing undesirable modes. Detection was achieved by comparing the reference phase of an input signal to the phase shift from the biosensor using an integrated electronic multi-readout system connected to a laptop computer or PDA. The Love wave acoustic arrays were centered at 330 MHz, shifting to 325-328 MHz after application of the silicon dioxide waveguides. The insertion loss was -6 dB with an out-of-band rejection of 35 dB. The amplitude and phase ripple were 2.5 dB p-p and 2-3{sup o} p-p, respectively. Time-domain gating confirmed propagation of the SH mode while showing suppression of the triple transit. Antigen capture and mass detection experiments demonstrate a sensitivity of 7.19 ± 0.74{sup o} mm2/ng with a detection limit of 6.7 ± 0.40 pg/mm2 for each channel.
