Stretchable Graphene Transistors with Printed Dielectrics and Gate Electrodes

Abstract

With the emergence of human interface technology, the development of new applications based on stretchable electronics such as conformal biosensors and rollable displays are required. However, the difficulty in developing semiconducting materials with high stretchability required for such applications has restricted the range of applications of stretchable electronics. Here, we present stretchable, printable, and transparent transistors composed of monolithically patterned graphene films. This material offers excellent mechanical, electrical, and optical properties, capable of use as semiconducting channels as well as the source/drain electrodes. Such monolithic graphene transistors show hole and electron mobilities of 1188 ± 136 and 422 ± 52 cm(2)/(V s), respectively, with stable operation at stretching up to 5% even after 1000 or more cycles.

Optical Third-Harmonic Generation in Graphene

“…Furthermore, the use of THG allows a broader choice of substrates than for typical optical imaging of graphene using certain fixed-thickness oxide layers on Si(001) to facilitate optical contrast [41]. This capability to probe graphene on arbitrary substrates is an important advantage of THG over linear optical imaging since graphene has been transferred to various substrates, including silicon-on-insulator [37], sapphire [42], diamondlike carbon [43], hexagonal boron nitride [44], quartz and glass [45], and flexible polymer substrates [46][47][48][49], for photonic and electronic applications.…”

Properties and Customization of Sensor Materials for Biomedical Applications

“…Flexible, stretchable, and transparent electronics that can be intimately associated with human skin and tissues is likely to play a significant role in future applications involving chemical sensing (236,(341)(342)(343)(344)(345). Currently, wearable sensors are mainly applied to the measurement of electrical activity produced by the brain and heart of humans noninvasively (342).…”

High Strength Metallurgical Graphene – Mechanisms of Growth and Properties / Grafen Metalurgiczny O Wysokiej Wytrzymałości – Mechanizmy Wzrostu I Właściwości

“…In this case, modeling does not replace experiments conducted on real structures. The most commonly used graphene sheets are obtained by exfoliation from highly oriented pyrolytic graphite (HOPG) [11] or by a chemical vapor deposition (CVD) process on transistor circuits or small sensors [12]. In the literature, there is a lack of a broad characterization of graphene obtained using other methods.…”