<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "The Use of Graphene and its Derivatives in Chemical and Biological Sensing"^^ . "Abstract\r\nA chemical sensor is defined as a transducer comprised of, or coated with, a layer that responds\r\nto changes in its local chemical environment. Chemical sensors convert various forms of energy\r\ninto a measurable signal. For instance, the chemical energy involved with bonds breaking or\r\nforming can change the electronic properties of the transducer, creating an observable signal\r\nsuch as an increase or decrease in electrical resistance. Chemical sensing is important in many\r\nfacets of research including environmental, bio-medical/pharmaceutical, industrial, automotive,\r\nand human safety. For a sensor to be practical it must interact preferentially with the target\r\nchemical analyte. A sensor should be precise, accurate, robust, cost efficient to manufacture, low\r\nin power consumption, portable otherwise the sensor is undesirable. Another key value of\r\nchemical sensors is it must exhibit rapid detection. Prior to portable sensors chemical analysis\r\nwas performed in a laboratory on large, expensive instruments, which is costly in time,\r\nequipment fees, and personnel wages to operate. These sophisticated instruments are accurate\r\nand precise, however, it is far more beneficial to have a miniature, on-site detection apparatus.\r\nThe first environmental, on-site sensor was used by the mining industry to monitor subterranean\r\nair quality; the canary. Carbon monoxide and methane (colorless, odorless gases) are large\r\niv\r\nproblems in the mining industry; smaller life forms are more susceptible to being poisoned by\r\ntoxic gases. Today sensor constructs are far different from that of a canary, however, they serve\r\nthe same purpose. Carbon nanomaterials such as graphene and single-walled carbon nanotubes\r\nand other derivatives prove to be of great importance in sensor research due to their unique\r\nelectronic properties, and they’re high aspect ratio allowing them to be highly sensitive to small\r\nperturbations in local electronic environments."^^ . "2016-06-21" . . . . . . . . "Gregory J"^^ . "Morgan"^^ . "Gregory J Morgan"^^ . . . . . . "The Use of Graphene and its Derivatives in Chemical and Biological Sensing (PDF)"^^ . . . . . . . . . "GJMorgan_Masters_Thesis_ed_3-15-16_JK_1.pdf"^^ . . . "The Use of Graphene and its Derivatives in Chemical and Biological Sensing (Image (JPEG))"^^ . . . . . . "preview.jpg"^^ . . . "The Use of Graphene and its Derivatives in Chemical and Biological Sensing (Indexer Terms)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #27255 \n\nThe Use of Graphene and its Derivatives in Chemical and Biological Sensing\n\n" . "text/html" . .