title: High-resolution, parallel patterning of nanoparticles via an ion-induced focusing mask.
abstract: An ion-induced focusing mask under the simultaneous injection of ions and charged aerosols generates invisible electrostatic lenses around each opening, through which charged nanoparticles are convergently guided without depositing on the mask surface. The sizes of the created features become significantly smaller than those of the mask openings due to the focusing capability. It is not only demonstrated that material-independent nanoparticles including proteins can be patterned as an ordered array on any surface regardless of the conductive, nonconductive, or flexible nature of the substrate, but also that the array density can be increased. Highly sensitive gas sensors based on these focused nanoparticle patterns are fabricated via the concept.
authors: National CRI Center for Nano Particle Control, Institute of Advanced Machinery and Design, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
authors: Sukbeom
authors: S
authors: You
authors: Kyuhee
authors: K
authors: Han
authors: Hyoungchul
authors: H
authors: Kim
authors: Heechul
authors: H
authors: Lee
authors: Chang Gyu
authors: CG
authors: Woo
authors: Changui
authors: C
authors: Jeong
authors: Woongsik
authors: W
authors: Nam
authors: Mansoo
authors: M
authors: Choi
mesh_terms: D007477:Ions; D053768:Metal Nanoparticles / Q000737:chemistry*; D046228:Microarray Analysis / Q000295:instrumentation / Q000379:methods*; D055672:Static Electricity; D013499:Surface Properties
chemical_list: D007477:Ions