Straintronics of 1D nanomaterials


Dmitry G. Kvashnin


Emanuel Institute of Biochemical Physics RAS



Abstract:

Straintronics is new filed of materials science which studied how mechanically induced stresses in nanomaterials can change their physical and physical properties. One of the main features of low-dimensional materials is their elasticity. Low-dimensional nanomaterials, like nanowires or 2D graphene nanomeshes are promising materials as possible building blocks for flexible electronic circuits including wearable electronics, while traditional silicon-based semiconductor technology has limitations preventing its application in this field. For the next generation of devices, semiconductor nanowires are promising materials due to their unusual electrical, mechanical, and optoelectronic properties. It is worth noting that the mechanical properties of nanowires make them unique objects for straintronics. This time there are number of studies of technological applications of nanowires as key elements of high-capacity flexible lithium-ion batteries, field-effect transistors, flexible nanogenerators and thermoelectric generators. However, reducing the size does not necessarily have to result in improve the performance of electronic and optical devices. In order to ensure compatibility with existing electronic technologies requires a deeper understanding of the effects associated with the structure and properties of nanowires. As a result. The effects of external perturbations, such as mechanical deformations on the electronic, optical and conductive properties of nanowires, which cannot be carried out without the full application of modern numerical methods atomistic simulations. Here the results of joint theoretical and experimental studies of influence of mechanical deformations on the physical and chemical properties of nanowires and nanotubes of various compositions. Also, the latest results of the fabrication of nano transistor based on SWCNT expanded and exposed under heat were presented. Results of studies were published in the high cited scientific journals like Science, Nano Letters, APL Materials etc.