Vertical Conductivity and Topography in Electrostrictive Germanium Sulfide Microribbon via Conductive Atomic Force Microscopy

Data-Driven Materials Informatics for Novel Piezoelectric Janus-Type Nanomaterials Discovery

In the recent era of green and sustainable energy, the demand for effective and efficient energy harvesting has dramatically increased. Piezoelectric energy harvesting, which converts mechanical energy into electrical energy, is considered a viable strategy to achieve this goal. Janus-type nanomaterial, a noncentrosymmetric material with different elemental species in the upper and lower atomic layers, has gained interest due to its exotic properties compared to conventional bulk and symmetric materials. In this work, we systematically design and investigate a new class of Janus nanomaterials with enhanced intrinsic polarization via the successive ionic exchange method. Multiple layers of stability standards, including both thermodynamic and dynamic stabilities, are employed in the high-throughput screening procedure of novel Janus-type nanomaterials. The newly proposed Janus-type nanomaterials exhibit more than 10 times higher piezoelectric response compared to that of reported low-dimensional materials and even comparable to that of bulk materials.

2D Materials in Flexible Electronics: Recent Advances and Future Prospectives

Flexible electronics have recently gained considerable attention due to their potential to provide new and innovative solutions to a wide range of challenges in various electronic fields. These electronics require specific material properties and performance because they need to be integrated into a variety of surfaces or folded and rolled for newly formatted electronics. Two-dimensional (2D) materials have emerged as promising candidates for flexible electronics due to their unique mechanical, electrical, and optical properties, as well as their compatibility with other materials, enabling the creation of various flexible electronic devices. This article provides a comprehensive review of the progress made in developing flexible electronic devices using 2D materials. In addition, it highlights the key aspects of materials, scalable material production, and device fabrication processes for flexible applications, along with important examples of demonstrations that achieved breakthroughs in various flexible and wearable electronic applications. Finally, we discuss the opportunities, current challenges, potential solutions, and future investigative directions about this field.