College of Chemistry, University of California Berkeley, Berkeley, California 94720, USA.
J Am Chem Soc. 2009 Apr 22;131(15):5396-8. doi: 10.1021/ja900130n.
As energy demands increase, new, more direct, energy collection and utilization processes must be explored. We present a system that intrinsically combines the absorption of sunlight with the production of useful work in the form of locomotion of objects on liquids. Focused sunlight is locally absorbed by a nanostructured composite, creating a thermal surface tension gradient and, subsequently, motion. Controlled linear motion and rotational motion are demonstrated. The system is scale independent, with remotely powered and controlled motion shown for objects in the milligram to tens of grams range.
随着能源需求的增加，必须探索新的、更直接的能源收集和利用方法。我们提出了一个系统，该系统本质上结合了太阳光的吸收和有用功的产生，以物体在液体上的运动形式呈现。聚焦的太阳光被纳米结构复合材料局部吸收，产生热表面张力梯度，并随后产生运动。展示了受控的直线运动和旋转运动。该系统是独立于尺度的，对于毫克到几十克范围内的物体，可以进行远程动力和控制的运动。
