Zobrazeno 1 - 7
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pro vyhledávání: '"Kishan Rijal"'
Autor:
Raj Mutharasan, Kishan Rijal
Publikováno v:
Analytical Chemistry. 79:7392-7400
Piezoelectric-excited, millimeter-sized cantilever (PEMC) sensors having high-mode resonance near 1 MHz are shown to exhibit mass change sensitivity of 1-300 ag/Hz. Gold-coated PEMC sensors immobilized with 15-mer single-stranded DNA (ssDNA) were exp
Autor:
Kishan Rijal, Raj Mutharasan
Publikováno v:
Sensors and Actuators B: Chemical. 124:237-244
We show that piezoelectric-excited millimeter-sized cantilever sensors operating in the inviscid region (Reynolds number ∼10 5 ) detect density differences of a few μg/mL. The self-sensing mechanism of the sensor provides a sensitive method and en
Autor:
Kishan Rijal, Raj Mutharasan
Publikováno v:
Langmuir. 23:6856-6863
We describe a cantilever-based method for measuring the self-assembly of alkanethiols on a gold surface in a flow system that permits easy step changes in concentration and acquire a continuous in situ measure of the resulting chemisorption through t
Publikováno v:
Analytical Chemistry. 79:2762-2770
Rapid (approximately 10 min) measurement of very low concentration of pathogens (approximately 10 cells/mL) and protein (approximately fg/mL) has widespread use in medical diagnostics, monitoring biothreat agents, and in a broader context as a resear
Publikováno v:
Biosensors and Bioelectronics. 21:871-880
Optical fibers (core diameter 8 microm, cladding diameter 125 microm) was tapered to a waist diameter in the range of 8-12 microm, and then a monoclonal antibody to the pathogen, Escherichia coli O157:H7 was covalently bonded to the surface of the ta
Publikováno v:
Biosensorsbioelectronics. 21(12)
Geometry of tapered fiber sensors critically affects the response of an evanescent field sensor to cell suspensions. Single-mode fibers (nominally at 1300 nm) were tapered to symmetric or asymmetric tapers with diameters in the range of 3-20 microm,
Autor:
Raj Mutharasan, Kishan Rijal
Publikováno v:
The Analyst. 138:2943
We show for the first time the detection of ~700 E. coli O157:H7 (EC) in both buffer and proteinous sample (beef wash) using the virulent gene stx2 as a sensing molecule immobilized on piezoelectric-excited millimeter cantilever (PEMC) sensors withou