Guangdong University of Technology

Bin Xie

Yun Chen

Xin Chen

Maoxiang Hou

Yuanhui Guo

Hao Zhang

Li Ma

Lu Yan

A method for manufacturing a humidity alarm device based on laser-induced graphene is performed as follows. Carbon-based films are coated with a hydroxide ion-containing solution and processed by a laser device to generate hydrophilic graphene layers. The hydrophilic graphene layers are peeled off from the carbon-based films, wetted, and respectively wrapped around shaping rods varying in diameter. The wrapped rods are heated and shaped by a drying oven to obtain curled graphene switches. Each curled graphene switch is connected in series with an alarm lamp to form an alarm component. The alarm components are connected in parallel, and then connected to a positive terminal and a negative terminal of a power supply to form the humidity alarm device.

Method for manufacturing a humidity alarm device based on laser-induced graphene

A method of fabricating a magnetically-controlled graphene-based micro-/nano-motor includes: (a) mixing FeClcrystal powder with deionized water to obtain a FeClsolution; (b) completely immersing a carbon-based microsphere in the FeClsolution; transferring the carbon-based microsphere from the FeClsolution followed by heating to allow crystallization of FeClon the surface of the carbon-based microsphere to obtain a FeCl-carbon-based microsphere; (c) heating the FeCl-carbon-based microsphere in a vacuum chamber until there is no moisture in the vacuum chamber; continuously removing gas in the vacuum chamber and introducing oxygen; and treating the FeCl-carbon-based microsphere with a laser in an oxygen-enriched environment to obtain the magnetically controlled graphene-based micro-/nano-motor. A magnetically-controlled graphene-based micro-/nano-motor is further provided.

Magnetically-controlled graphene-based micro-/nano-motor and fabrication method thereof

Growing community of inventors

Guangzhou, China

Bin Xie