FlexiLEDs with printed graphene based thermal management

非常小的石墨烯薄片已经被制成印刷油墨，可以在薄塑料片和纸张上形成图案。这些薄片是在一个工业过程中从高质量的石墨颗粒在一个称为剥离的过程中衍生出来的。在印刷过程之后，石墨烯薄片以松散的布置组织，并且石墨烯薄片之间的接触面积小。我们正在开发一种转换工艺，以压缩印刷石墨烯区域的选定区域，以增强传热性能，同时使其在为集成电子和光电组件传输电流时更有效。我们的第一个演示将是微型LED的柔性片材，并将导致固态照明和指示器设备的全新和新颖的格式。进一步的发展可能会让日常包装变得智能，并能够捕获纳入物联网的数据。其他应用将是例如可穿戴显示器、护理点诊断条、用于轻型车辆的触摸设备。

Extremely small flakes of Graphene have been made into printing inks which can pattern thin plastic sheets as well as paper. The flakes are derived in an industrial process from high quality graphite particles in a process known as exfoliation. After the printing process the graphene flakes are organised in a loose arrangement and the contact area between graphene flakes is small. We are developing a conversion process to compress selected areas of the printed graphene regions to enhance heat transfer properties and at the same time make it more efficient when transferring electrical current for integrated electronic and optoelectronic components. Our first demonstration will be flexible sheets of micro LEDs and will lead to completely new and novel formats of solid state lighting and indicator devices. Further development may allow everyday packages to be smart and able to capture data which becomes incorporated in to the internet of things. Other applications would be wearable displays, point of care diagnostic strips, touch devices for light weight vehicles as examples.