Photothermal nonlinear scattering of shell-isolated gold nanoparticles and applications in super-resolution imaging

In this Letter,we report on the investigations of nonlinear scattering of plasmonic nanoparticles by manipulating ambient environments.We create different local thermal hosts for gold nanospheres that are immersed in oil,encapsulated in silica glass and also coated with silica shells.In terms of regulable effective thermal conductivity,silica coatings are found to contribute significantly to scattering saturation.Benefitting from the enhanced thermal stability and the reduced plasmonic coupling provided by the shell-isolated nanoparticles,we achieve super-resolution imaging with a feature size of 52 nm(λ/10),and we can readily resolve pairs of nanoparticles with a gap-to-gap distance of 5 nm.

实施非税收入改革 提高财政管理水平

为进一步深化收支两条线改革，实现政府非税收入管理规范化、制度化、科学化，提高政府行政执法和财政管理水平，增强政府宏观调控能力，从源头上预防和治理腐败。荣昌县自2004年3月1自荣昌县对非税收入突行“单位开票、银行代收、财政统管”征缴改革。征缴改革实施以来，政府非税收入稳步增长，有效遏制了乱收乱罚乱摊及私设“小金库”等违规违纪行为，成为重庆市第一个全面铺开这项改革的县。