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Nanomaterials

M

Defect-induced effects in nanomaterials

Following the success of 5 previous symposia, this one is dedicated to further exploring the basic properties and technology of nanomaterials using the controlled introduction of defects through the application of external loads, including ionizing and particle radiation.

Scope:

Solids without defects are impossible to achieve based on thermodynamics. The defects are Janus Bifrons: they can deteriorate the properties of materials and structures, but they can also enhance them with unique and useful properties which are absent in the perfect solids. Due to the wide applications of nanotechnology it is necessary to invest efforts in studying the formation of evolution and defects at the nanoscale The high sensitivity of modern technologies on the submicron scale has promoted the exciting opportunity of developing new advanced materials with reduced dimensionality. This opens new prospects for ion and electron beam applications. Ion tracks and other radiation-induced effects provide a means for controlled synthesis and modification of low-dimensional materials, such as nanoclusters and nanowires, allowing for efficient nano- and optoelectronic devices. Defect behavior in nanomaterials and nanostructures in its turn has often been found to differ substantially from that observed in bulk materials. Recent work has demonstrated spectacular optical and magnetic effects due to deliberately created defects or radiation-induced transformation of nanomaterials as well as radiation-induced displacements in low-dimensional insulators and semiconductors, with numerous potential applications. We plan to discuss how such defects could be introduced controllably, categorized and controlled in nanostructures. Understanding and controlling defect properties and capturing the grain boundary effects in a wide class of advanced nanostructures (novel 2D materials, multiferroics, quantum dots and wires, etc.) could well be a key to breakthroughs in several crucial areas of science and technology.  This is the main focus of the symposium. Since a complete and detailed understanding of all of the above is impossible without computational approaches, the latter techniques, including ab initio calculations, will also be favored.

Hot topics to be covered by the symposium:

  • Defects in graphene and other 2D materials
  • Swift heavy ion irradiation as the means to tailor nanomaterials
  • Effects of grain boundaries and interfaces on the diffusion and transport processes in nanomaterials
  • Electronic structure of defects in nanostructures
  • Creation, evolution and properties of radiation defects in nanosize materials and heterostructures; the role of interfaces, nonstoichiometry
  • Multiscale computer modeling of defect creation and transformation in nanomaterials
  • Novel technological processes of micro-, nano- and optoelectronics using defects and radiation effects

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Symposium organizers
Anatoli POPOVUniversity of Latvia

Institute of Solid State Physics, Kengaraga 8, Riga LV-1063; Latvia

+371 67187480
popov@latnet.lv
Halyna KLYMLviv Polytechnic National University

12 Bandera street, Lviv, Ukraine

+380978483867
halyna.i.klym@lpnu.ua
Mikhail BRIKUniversity of Tartu

W. Ostwald Str 1, Tartu 50411, Estonia

+372 7374751
mikhail.brik@ut.ee
Nikolai A. SOBOLEVUniversidade de Aveiro

Departamento de Física and I3N, Campus de Santiago, 3810-193 Aveiro, Portugal

+351 234 378117
sobolev@ua.pt