Batron P–Si microsensor for methane and its derivatives

Lein, George M.; Paquette, S.; Vadhavkar, Sameer S.; Fuller, Lynn; Santhanam, K. S. V.

doi:10.1016/j.snb.2009.07.047

Cited by 8 publications

(5 citation statements)

References 15 publications

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“…Traditional enzyme-based biosensors for glucose detection, however, are constrained with respect to complicated immobilization procedure, critical operation situation, high cost and poor stability, which limit their universal application for routine detection. Recently, with the purpose of overcoming such disadvantages and improving the glucose sensor sensitivity and stability, nonenzymatic glucose sensors based on the electrochemical catalytic oxidation of glucose have been developed [7], with the application of various materials, including carbon materials [8,9], polymers [10][11][12][13][14][15], inorganic composites and nanomaterials [16]. Among them, graphene has been widely applied to design electrochemical sensors [8,9,17], because of its excellent conductivity, high surface area, unusual structural characteristics and good biocompatibility [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Nickel nanoparticles modified conducting polymer composite of reduced graphene oxide doped poly(3,4-ethylenedioxythiophene) for enhanced nonenzymatic glucose sensing

Hui

Wang

Xie

et al. 2015

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Nickel nanoparticles modified conducting polymer composite of reduced graphene oxide doped poly(3,4-ethylenedioxythiophene) for enhanced nonenzymatic glucose sensing

Hui

Wang

Xie

et al. 2015

Sensors and Actuators B: Chemical

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“…Broadly defined, a sensor is converting a non‐electrical signal to an electrical signal and an actuator as a reversal of it. A transducer has generally both these functions and smart sensors have a processor built into a transducer (Lein et al, 2009; Olney et al, 2014; Santhanam et al, 2005). The development of sensors for pathogens has been around for two decades and is slow compared with other atmospheric sensors (Santhanam & Ahamed, 2018).…”

Section: Methodology For Detection Of Virusesmentioning

confidence: 99%

Electrochemical approaches towards sensing viruses: A mini review

Santhanam

2020

Med Devices & Sens

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The world is exposed to a large number of pathogens that are primarily responsible for variety of diseases in humans and animals. These pathogens are divided into five broad categories such as viruses, bacteria, fungi, protozoa and worms. They enter the human body and utilize the body's resources to replicate, before exiting and infecting a new host, while weakening the immune system. In the class of pathogens, viruses are unique in that they kill host cells. We have been threatened by pathogens for centuries and our ability to reduce morbidity becomes obvious when we examine our average life span. Life expectancy of humans in the early 19th century was 40 years, which increased to 58 years in 1950 and then to 72 years in 1972. This gradual increase is due to better understanding of the biology of these pathogens, along with established methods for their detection and treatment. In 1940, influenza viruses A and B were detected and two vaccine protections against them were discovered in 1942. The H2N2 virus of 1957 resulted in deaths globally and led to the discovery of an antiviral medication in 1966. Another pandemic caused by H3N2 influenza virus resulted in several deaths in the United States and worldwide. The 2009 human influenza A H1N1 virus caused an annual global attack rate of 5%-10% in adults and 20%-30% in children; in one year (April 2009 to April 2010), 60.8 million cases were identified with a large number of deaths occurring in USA (https://www.cdc.gov/flu/pande mic-resou rces/2009-h1n1-pande mic.html, https://www.cdc.gov/flu/pande mic-resou rces/pande mic-timel ine-1930-and-beyond.html). Influenza virus infection occurred via inhalation of virus laden particles or direct contact with virus contaminated surfaces (Choi et al., 2002; Couch, 2003). The solution to the problem of virus attack is to detect them with precautions to suitably control or eliminate them. This review is oriented towards the detection of the viruses. 2 | ME THODOLOGY FOR DE TEC TION OF VIRUS E S Historically, respiratory virus infections have been diagnosed by a combination of techniques such as enzyme immune assay, direct fluorescence antibody, staining, cell culture and nucleic acid amplification

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“…Thus, the development of a reliable and cost-effective methane gas sensor is important. Roomtemperature detection of methane is challenging and has been reported by others, but those lack the temperature range capability for realistic applications [62][63][64][65][66][67][68][69]. Recently NASA GRC developed porous SnO2 nanostructures for methane detection for a wide temperature range, including room temperature [13].…”

Section: Porous Sno 2 Nanostructuresmentioning

confidence: 99%

Advanced Electron Microscopy Techniques in Nanomaterials Characterization at NASA Glenn Research Center

Solá¹

2015

The Transmission Electron Microscope - Theory and Applications

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In this chapter, the author will review several advanced microscopy techniques developed at the N"S" Glenn Research Center in the last years. Topical areas include unconventional approach to investigate the fine nanoporous structure of aerogels by scanning electron microscopy, new limits for transmission electron microscopy investigation of dispersion and chirality of single-walled carbon nanotubes within a polymer matrix, the importance of microstructure of porous tin dioxide nanostructure that lead to first time detection of methane at room temperature without doping or catalyst, in situ SEM methods to study the thermal stability of nanoparticles on Graphene/Cu based materials, electron beam irradiation effects on carbon nanotube yarns electrical properties, and nanoindentation work of multiphase thermoelectric material.Keywords: Electron microscopy, "erogels, CNT, SnO , Graphene/Cu, WSi /SiGe . Introduction Nanomaterials can have a direct impact on N"S" missions in areas of engineered materials and structures, devices, electronics, energy generation and storage, and sensors among others [ ]. Nanomaterials can offer up to percent weight savings, and thus cost [ ]. This chapter will review several advanced microscopy techniques developed and applied to cutting-edge nanomaterials research at N"S" Glenn Research Center GRC in the last years [ ]. The first © 2015 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.topic investigates the examination of the nanoporous structure of aerogels with a scanning electron microscopy SEM technique. "erogels are emerging materials with the promise of unusually high strength for some cases , thermal insulation, and damping capability combined with very light weight. "ecause of these properties, aerogels have been used in several N"S" missions to collect comet dust particles and provide thermal insulation of components in Mars rovers, for instance [ ]. Other current applications include thermal insulation for inflatable reentry decelerators and extra-vehicular activity suits [ ]. Many of the outstanding physical properties of aerogels depend on their porous structure. SEM is a commonly used technique to estimate the pore size in aerogels, but is hampered by charging, the accumulation of electrons on the surface of the sample. The common solution employed to minimize charging effects is to deposit a layer of a conducting material on the sample. However, this technique can drastically mask the intrinsic porous structure of the aerogel. Here it is shown that negative charging effects on aerogels can be dissipated using nitrogen gas [ -].The second subject will be carbon nanotube CNT /polymer nanocomposites, which have excellent promise for improved strength and light weight and are being actively researched in a number of N"S" projects. Rec...

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Batron P–Si microsensor for methane and its derivatives

Cited by 8 publications

References 15 publications

Nickel nanoparticles modified conducting polymer composite of reduced graphene oxide doped poly(3,4-ethylenedioxythiophene) for enhanced nonenzymatic glucose sensing

Nickel nanoparticles modified conducting polymer composite of reduced graphene oxide doped poly(3,4-ethylenedioxythiophene) for enhanced nonenzymatic glucose sensing

Electrochemical approaches towards sensing viruses: A mini review

Advanced Electron Microscopy Techniques in Nanomaterials Characterization at NASA Glenn Research Center

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