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Zawartość zarchiwizowana w dniu 2024-06-16

Towards size effects in nanosized ferroelectrics - fabrication of nanocrystals by self-assembling methods

Cel

Nanotechnology is expected to have a big impact on most of our life. Nanostructred materials become more and more important in various fields such as nanoelectronics, information storage technology etc. At the nanometre scale, i.e. 1-100 nm, material properties are clearly size-dependent and new properties are expected. Among functional materials nanoscale ferroelectrics can have a major role because they can be applied in different fields such as sensors, actuators, memory devices and optics. However they cannot be applied to nanometre scale devices before the influence of the lateral size on physical properties will be clarified.

In order to find answer for the problems there is a need to have good quality nanoscale structures. It is a challenge to fabricate such structures in this range using both lithography ('top-down' approach) and self-assembling and self-patterning methods ('bottom-up' approach). Whereas conventional lithographic systems work usually with a resolution of about 100 nm the bottom-up approaches allow the inexpensive fabrication of structures with size of 10-20 nm. The main goal of the work is preparation of nanosized ferroelectric crystals by self-assembling methods. Successful strategies and routes have been developed to synthesize nanoscale materials of numerous simple systems such as semiconductors or metals.

Complex systems such as ferroelectric oxides are not yet systematically addressed, despite of the possibility of discovering new materials with unique properties. Physical route based on the concept of microstructural instability of ultra-thin films and chemical routes will be applied to obtain different perovskite crystals. A good quality of nanostructures that lateral dimension can be tuned in nanometre range is expected to fabricate and in future this will allow investigating structure-property relations (e.g. by transmission electron microscopy and piezoresponse force microscopy) and solve 'size effects' problem.

Dziedzina nauki (EuroSciVoc)

Słowa kluczowe

Temat(-y)

Zaproszenie do składania wniosków

FP6-2002-MOBILITY-11
Zobacz inne projekty w ramach tego zaproszenia

System finansowania

ERG - Marie Curie actions-European Re-integration Grants

Koordynator

POZNAN UNIVERSITY OF TECHNOLOGY
Wkład UE
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