Li Xuequan, Liu Mengmeng, Huang Baisheng, Liu Hong, Hu Weiguo, Shao Li-Hua, Wang Zhong Lin
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences; National Center for Nanoscience and Technology (NCNST), Beijing 100083, P. R. China.
School of Material Science and Engineering, Georgia Institute of Technology Atlanta, Georgia 30332-0245, USA.
Sci Rep. 2016 Apr 11;6:24092. doi: 10.1038/srep24092.
We firstly designed an electrochemical system for dealloying to synthesize nanoporous gold (NPG) and also driving the novel NPG based actuator by utilizing a modified rotary triboelectric nanogenerator (TENG). Compared to the previous reported TENG whose outputs decline due to temperature rising resulting from electrodes friction, the modified TENG with a cooling system has stable output current and voltage increased by 14% and 20%, respectively. The novel cantilevered hybrid actuator characterised by light-weight (ca. 3 mg) and small volume (ca. 30 mm × 2 mm × 10 μm) is driven by a microcontroller modulated TENG with the displacement of 2.2 mm, which is about 10(6) times larger than that of traditional cantilever using planar surfaces. The energy conversion efficiencies defined as the energy consumed during dealloying and actuation compared with the output of TENG are 47% and 56.7%, respectively.
我们首先设计了一种用于脱合金化的电化学系统，以合成纳米多孔金（NPG），并利用改进的旋转摩擦纳米发电机（TENG）驱动基于新型NPG的致动器。与先前报道的由于电极摩擦导致温度升高而输出下降的TENG相比，带有冷却系统的改进型TENG具有稳定的输出电流和电压，分别提高了14%和20%。这种新型的悬臂式混合致动器具有重量轻（约3毫克）和体积小（约30毫米×2毫米×10微米）的特点，由微控制器调制的TENG驱动，位移为2.2毫米，这比使用平面的传统悬臂大约大10⁶倍。与TENG的输出相比，在脱合金化和致动过程中消耗的能量定义的能量转换效率分别为47%和56.7%。
