C0lc00605j 1952..1961
نویسندگان
چکیده
Low-doped silicon multi-nanowire field effect transistors with high ON/OFF ratio over 10 and a low subthreshold swing of 60–120 mV dec 1 are fabricated using lithographic semiconductor processes. The use of multi-nanowires instead of a single nanowire as sensing elements has shown improved device uniformity and stability in buffer solutions. The device stability is further improved with surface silanization and biasing with a solution gate rather than a backgate. pH sensing with a linear response over a range of 2–9 is achieved using these devices. Selective detection of bovine serum albumin at concentrations as low as 0.1 femtomolar is demonstrated.
منابع مشابه
The effect of succinate and amytal on the reduction of acetoacetate in animal tissues.
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متن کاملThe lipotropic action of some halogen derivatives of acetic acid.
Hawk, P. B., Oser, L. B. & Summerson, W. H. (1947). Practical Phyiological Chemi8try, 12th ed., p. 1273. London: J. and A. Churchill Ltd. Koszewski, B. J. (1952). Blood, 7, 1182. Leaf, G. & Neuberger, A. (1947). Biochem. J. 41, 280. Lindon, 0. & Work, E. (1953). Biochem. J. 55, 554. Nath, M. C. & Behki, R. M. (1958). Arch. Biochem. Biophy8. 73, 65. Nath, M. C., Chitale, R. P. & Belavady, B. (19...
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Alloxan is a polyoxy-pyrimidine of unusual biological interest, being the agent of choice for producing experimental diabetes (Shaw-Dunn, Sheehan, and McLetchie, 1943). Despite the fact that it has been used extensively for many years, very little is known of its ultimate fate in mammals or other forms of life. It is exceedingly unstable at physiological pH values and is spontaneously converted...
متن کاملUltrasensitive protein detection using lithographically defined Si multi-nanowire field effect transistors.
Low-doped silicon multi-nanowire field effect transistors with high ON/OFF ratio over 10(7) and a low subthreshold swing of 60-120 mV dec(-1) are fabricated using lithographic semiconductor processes. The use of multi-nanowires instead of a single nanowire as sensing elements has shown improved device uniformity and stability in buffer solutions. The device stability is further improved with su...
متن کاملRecent aspects in the development of a closed ecologic system.
T H E C O N C E P T of a closed ecologic .system in its entirety has existed for a number of years in the mind .of one of our foremost scientists in the field of Space Medicine. Dr. Hubertus Strughold had envisioned man on extended flights into space, his respiratory requirements to be met by an appa.ratt~s termed a photosynthetic gas exchanger. T,his brilliant idea began to assume its place in...
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