基于氧化石墨烯微加热器的微气泡研究

氧化石墨烯具有良好的光热转换效率，能在微纳米尺度的区域内形成热梯度场。利用氧化石墨烯沉积在微纳米光纤表面可组成微加热器，输入红外光（ASE宽带光源产生的光），微加热器会加热周围液体，并在微纳米光纤上产生微热气泡和椭圆形微气泡，但两者产生的行为方式不同。结果表明，微热气泡直接形成于氧化石墨烯微加热器表面，而当微加热器置于气液交界面时，椭圆形微气泡则形成于微纳米光纤上。该研究结果加深了对微气泡物理行为的认识，对发展新兴的基于气泡的光热转化设备起到了推动作用。

Study On the Microbubbles Based On Graphene Oxide Micro Heaters

Graphene oxides have good photothermal efficiency, which can generate a thermal gradient field on the nano scale. The use of graphene oxides deposited on the nano optical fiber surface can be composed of micro heater. Through the infrared light, the micro heater can heat the surrounding liquid, and the thermal microbubbles and ellipsoidal microbubbles are generated on the micro/nano optical fiber, but the ways of their behavior are different. The results show that the thermal microbubbles formed directly on graphene oxide micro heater surface, and when the micro heater is positioned at the gas-liquid interface, ellipsoidal microbubbles are formed on the micro nano optical fiber. The results of this study have deepened the understanding of the physical behavior of microbubbles, and played a role in promoting the development of novel photothermal bubble-based devices.