title: Patterning of plasmonic nanoparticles into multiplexed one-dimensional arrays based on spatially modulated electrostatic potential.
abstract: We report a new strategy to pattern plasmonic nanoparticles into multiplexed one-dimensional arrays based on the spatially modulated electrostatic potential. The 32 nm Au nanoparticles can be simultaneously deposited on one chip with tunable interparticle distance by solely adjusting the width of the grooves. Furthermore, 32 and 13 nm Au nanoparticles can be selectively deposited in grooves of different widths on one chip. As a result, the surface plasmon absorption bands on the chip can be tuned depending on the interparticle distance or the particle size of multiplex 1D arrays, which could enhance the Raman scattering cross section of the adsorbed molecules and result in multiplex surface-enhanced Raman scattering (SERS) response on the chip. This strategy provides a general method to fabricate 1D multiplex arrays with different particle sizes and interparticle distances on one chip.
authors: School of Materials Science and Engineering and the Center for the Biomimetic Sensor Sciences, Nanyang Technological University, 50 Nanyang Avenue, 639798 Singapore.
authors: Lin
authors: L
authors: Jiang
authors: Yinghui
authors: Y
authors: Sun
authors: Christoph
authors: C
authors: Nowak
authors: Asmorom
authors: A
authors: Kibrom
authors: Changji
authors: C
authors: Zou
authors: Jan
authors: J
authors: Ma
authors: Harald
authors: H
authors: Fuchs
authors: Shuzhou
authors: S
authors: Li
authors: Lifeng
authors: L
authors: Chi
authors: Xiaodong
authors: X
authors: Chen
mesh_terms: D000042:Absorption; D006046:Gold / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size; D013059:Spectrum Analysis, Raman; D055672:Static Electricity; D013499:Surface Properties
chemical_list: D006046:Gold