Fabrication Of Free-standing Film Based On Au Nanopatical Array

With the rapid development of science and technology, information, environment, energy and national defense science and technology put forward higher requirements for the materials. A variety of device miniaturization, high integration, intelligent material size smaller and smaller. In order to adapt to the requirement, the scientists made a lot of effort, trying to make a smaller, lighter, more convenient electronic devices. The miniaturization device can maximum reduce material and energy consumption and maintain its performance remains the same. Currently there are two ways of the preparation of such device miniaturization. One is lithography, this technology has been very mature. It has prepared a variety of portable devices. Another is the use of flexible, organic-inorganic hybrid materials instead of rigid inorganic semiconductor materials. These lightweight materials can be further processed by self-assembly technology be ultra-thin, self-supporting electronic devices. These devices have high flexibility, flexible, easy to operation. For some the miniaturization of devices, lithography is close to the limit of its function and technology for new type of electronic devices. Therefore, to use soft material preparation, robust, flexible electronics has become a major way. The preparation of the self-supporting nano film will make a great contribution in the future.This paper based on Eah et al of the work, the synthesis of gold nanoparticles is about 5 nm in diameter,and then we make these gold nanoparticles a single gold nanoparticles array film. This work has developed a method to transfer nanoparticles arrays from the parent substrate to the target substrate. An close-packed and ordered Au nanoparticles array has been successfully transferred using poly(lactic acid) (PLA) as the mediator. In the transfer process, the last step of removing the PLA mediator plays a crucial role. All of the characterization data, including optical microscopy, TEM and SAXS proved that the structure of the array was well preserved after transfer in the both macroscopic and microscopic scale, indicating the transfer of nanoparticle array was successful. Further, the transfer method was combined with layer-by-layer self-assembly to fabricate a nanoparticles-array-sandwiched nanocomposite membrane, which displayed excellent high Young’s modular. The film prepared by this method can free-stand in the air. In addition, we also developed a simple operation of the preparation of gold nanoparticles array freestanding film. The method is to replace the dodecyl mercaptan on the gold nanoparticles surface with N,N’-(disulfanediyldiethane-2,1-diyl) bisprop-2-enamide (BAC), then put them under Ultraviolet light to make them crosslink. The film prepared by this method can free-stand in liquid-gas interface.