Wireless dielectrophoresis trapping and remote impedance sensing via resonant wireless power transfer.

ABSTRACT: Nearly all biosensing platforms can be described using two fundamental steps-collection and detection. Target analytes must be delivered to a sensing element, which can then relay the transduced signal. For point-of-care technologies, where operation is to be kept simple, typically the collection step is passive diffusion driven-which can be slow or limiting under low concentrations. This work demonstrates an integration of both active collection and detection by using resonant wireless power transfer coupled to a nanogap capacitor. Nanoparticles suspended in deionized water are actively trapped using wireless dielectrophoresis and positioned within the most sensitive fringe field regions for wireless impedance-based detection. Trapping of 40 nm particles and larger is demonstrated using a

SUBMITTER: Ertsgaard CT 

PROVIDER: S-EPMC9821345 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature