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NCJ Number: NCJ 236173   Add to Shopping cart   Find in a Library
Title: MicroCantilever (MC) based Robust Sensing Approach for Controlled Substances
Author(s): George Kraus ; Marit Nilsen-Hamilton ; Pranav Shrotriya ; Kyungho Kang ; Aaron Kempema ; Ashish Sachan
Corporate Author: Iowa State University
United States of America
Date Published: 2011
Page Count: 65
Sponsoring Agency: NLECTC Small, Rural, Tribal and Border Regional Ctr
United States of America
Grant Number: 2008-DN-R-038
Sale Source: NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Document: PDF 
Type: Report (Study/Research)
Language: English
Country: United States of America
Annotation: This grant-funded research report introduced the use of MicroCantilever (MC) based sensors for forensic detection and identification of controlled substances, toxic species, biological molecules and DNA matching.
Abstract: MicroCantilever (MC) based sensors can provide revolutionary sensitivity for forensic detection and identification of controlled substances, toxic species, biological molecules and DNA matching. Current sensor systems require extensive sample preparation and/or specialized instrumentation to identify molecules of controlled substances such as cocaine with high specificity and sensitivity. The authors aim to overcome the limitations of current sensor systems by developing a novel sensing approach based on MC sensors coupled with aptamer-based receptor layers. To demonstrate the feasibility and forensic suitability of their approach, the authors developed sensors for sensitive and specific identification of cocaine, cocaine metabolites, and methamphetamine and metabolites. These objectives were accomplished through the completion of tasks arranged in two phases so that knowledge and experience gained in the first phase may be utilized for successful completion of the second phase. In the first phase of the project, presented in this report, the authors: 1) Optimized the available DNA aptamer to improve its sensitivity for binding with cocaine; 2) Characterized the sensitivity and specificity of MC-based sensors functionalized with an available DNA aptamer that has specific affinity for cocaine; and 3) Initialed the selection of additional variant DNA aptamers with selective sensitivities to cocaine and its metabolites.
Main Term(s): Drug detection
Index Term(s): Information Systems and Technology ; Forensics/Forensic Sciences ; NIJ final report
   
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https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=258167

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