▎ 摘　　要

The high-quality flexible graphene thin films have been fabricated by the non-destructive rubbing method. The film exhibits an excellent photothermal conversion ability after oxygen plasma treatment and multiple mechanical bending. The temperature can be increased to 47.4 degrees C even under a low laser irradiation power of 240mW with a decent heating rate of 0.3 degrees C/s, and photothermal conversion efficiency reaches as high as 28%. The steady-state temperature can be precisely tuned by changing the laser power. These excellent results indicate graphene-based photothermal elements holding great promise for practical applications. (C) 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).