Misheng Liang , Yanshuo Feng , Yang Liu , Yiling Lian , Kaihu Zhang , Mengyao Tian , Rui You
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引用次数: 0
Abstract
Multicomponent plasmonic nanostructures exhibit enhanced resonant coupling and unique energy dissipation mechanisms, demonstrating out-standing application potential. However, the controllable fabrication of multicomponent plasmonic nanostructures in terms of composition, shape, and size, remains highly challenging. In this paper, we propose a method for controllable fabrication of multicomponent plasmonic nanocavity arrays through femtosecond laser directly writing. Based on the optically induced mechanical spallation effect, in-situ controllable direct writing of Au-Ag nanocavities was achieved and the size could be tuned within the range of 700 nm to 20 μm in diameter and 300 nm to 1.3 μm in height. The Au-Ag nanocavity structure showing a limit detection concentration of 10-14 M of rhodamine (R6G) and an enhancement factor of 1.27 × 108. Furthermore, the structure exhibited excellent physical and chemical stability, with a maxi-mum relative standard deviation of 3.02 % after exposure to air two months. In addition, other kinds of metal (Ag-Al) were also fabricated successfully, revealing highly universality of the fabrication method and making the method highly promising for widely applications.
期刊介绍:
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems