title: Directed assembly of carbon nanotubes on soft substrates for use as a flexible biosensor array.
abstract: We have developed a method to selectively assemble and align carbon nanotubes (CNTs) on soft substrates for use as flexible biosensors. In this strategy, a thin oxide layer was deposited on soft substrates via low temperature plasma enhanced chemical vapor deposition, and a linker-free assembly process was applied on the oxide surface where the assembly of carbon nanotubes was guided by methyl-terminated molecular patterns on the oxide surface. The electrical characterization of the fabricated CNT devices exhibited a typical p-type gating effect and 1/f noise behavior. The bare oxide regions near CNTs were functionalized with glutamate oxidase to fabricate selective biosensors to detect two forms of glutamate substances existing in different situations: L-glutamic acid, a neurotransmitting material, and monosodium glutamate, a food additive.
authors: Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Korea.
authors: Juntae
authors: J
authors: Koh
authors: Mihye
authors: M
authors: Yi
authors: Byung
authors: B
authors: Yang Lee
authors: Tae Hyun
authors: TH
authors: Kim
authors: Joohyung
authors: J
authors: Lee
authors: Young Min
authors: YM
authors: Jhon
authors: Seunghun
authors: S
authors: Hong