In-field sensors for the detection of illicit drugs. Presumptive field test kits for illicit drugs analysis are typically based on chemical spot tests that produce a coloured product. While relatively easy to apply, such test kits (containing wet chemicals) produce inconclusive colour changes lacking sensitivity, and selectivity requiring a subjective assessment by the examiner. Despite these limitations, these test kits are in widespread use and are routinely used. This study aims to develop s ....In-field sensors for the detection of illicit drugs. Presumptive field test kits for illicit drugs analysis are typically based on chemical spot tests that produce a coloured product. While relatively easy to apply, such test kits (containing wet chemicals) produce inconclusive colour changes lacking sensitivity, and selectivity requiring a subjective assessment by the examiner. Despite these limitations, these test kits are in widespread use and are routinely used. This study aims to develop specific in-field sensors for the detection and identification of illicit drugs. This would significantly enhance the ability of Forensic Services staff to confirm the identity of seized material. Increased specificity would provide valuable early advice to investigators regarding the nature of a seizure and would reduce the likelihood of false positive results. Increased sensitivity would permit the analysis of trace amounts of material from individuals or locations related to an illicit drug consignment.Read moreRead less
Correlation between surface force and morphology of self-assembled monolayer. As a most potential solid support for biological molecules without denaturing their functions, gold thiol self-assembled monolayers (SAMs) have been studied extensively for surface fabrication. In this project we will prepare functional monolayers using newly synthesized thiol derivatives, evaluate correlation between surface force and surface morphology of the SAMs using the surface forces apparatus, and optimize the ....Correlation between surface force and morphology of self-assembled monolayer. As a most potential solid support for biological molecules without denaturing their functions, gold thiol self-assembled monolayers (SAMs) have been studied extensively for surface fabrication. In this project we will prepare functional monolayers using newly synthesized thiol derivatives, evaluate correlation between surface force and surface morphology of the SAMs using the surface forces apparatus, and optimize the condition to fabricate biological devices such as immune sensors.Read moreRead less