Скачать с ютуб Husam Alshareef on MXenes: A New Class of Two-Dimensional Materials & their Emerging Applications в хорошем качестве

Husam Alshareef on MXenes: A New Class of Two-Dimensional Materials & their Emerging Applications

MXenes: A New Class of Two-Dimensional Materials and their Emerging Applications This talk will focus on the device applications of MXenes and MXene-derived functional materials. Our group has been developing MXenes and device concepts that capitalize on the rich their and promising properties. These include using MXenes as contacts, active materials, and precursors to prepare various types of synthetic 2D functional materials. For example, the excellent electrical conductivity of MXenes makes them good candidates as contact materials electronics (printed, wearable, and stretchable electronics) both as local and global contacts. We have demonstrated that MXenes are promising as electrical contacts in thin-film electronics, quantum dot electronics, CMOS devices, and solar cells. Further, due to the high carrier concentration of MXenes, they exhibit plasmonic properties which we used to develop broad-band plasmonic photodetectors working in the visible range. Capitalizing on the abundant surface charges of MXenes, we have developed conducting MXene-polymer hydrogels with unique (skin-like) sensing capabilities that outperform existing hydrogel sensors. These hydrogels could detect magnitude and signs of stress, speed, facial expression, touch, and sound. The hydrogel could also harvest energy from ultrasound, which can be stored or coupled to power other devices making them potentially useful for implanted powered sources. Finally, we have developed a new direction in MXene transformations, where the 2D nature of MXenes is leveraged to make high-performance functional materials. For example, highly-textured ferroelectric crystals, piezoelectric crystals, and piezoluminescent crystals were fabricated. Besides, 2D metal-organic frameworks and their thin films were made using MXene as a metal source resulting in highly-texture MOF thin films at the wafer scale. These MXene-derived functional materials are shown to be useful for many promising applications.