Title: Thermal Characterization and Thermal Tuning in Nanostructured Materials
The electron was discovered by Thomson in 1898 and electrical conductivity of materials has been an attractive research field during the last century. There has been considerable progress in electronic systems and now it is difficult to imagine the world without electronics. The invention of fire was a starting point of the history of thermal transport and recalls primitive human efforts. An investigation of thermal transport in materials has been underway for several decades compared to the much longer investigation of its electrical conductivity. There are some critical issues in many technologies because of the lack of attention to thermal transport. The current inability to control thermal transport has limited the development of cutting edge technologies both in industry and microelectronics. Nowadays, heat management problems attracted much attention worldwide, and a huge effort has been focused on tuning thermal transport in the materials to make them user-specific.
In this talk, a review of the development and application of several experimental techniques to measure cross-plane and in-plane thermal conductivity, including the Pulsed Photothermal reflectance (PPR), Transient Thermal Grating (TTG) and 3-omega techniques will be illustrated. And some recent works, such as cross-plane thermal conductivity measurement and thermal tuning in carbon structure, thermoelectric and hard coatings materials will be introduced. Different methods to reduce their thermal conductivity to create user-specific materials will be presented as well. And typical uses of the techniques to measure in-plane and cross-plane thermal conductivity of isotropic materials such as alumina nanochannels and WSe2 will be demonstrated, too.
Majid Kabiri Samani received his B.S. degree in applied Physics from University of Isfahan in 1999 and his M.S. in Solid State Physics from Tarbiat Moalem Universityn of Tehran (Kharazmi University) in 2002. From 2004-2009 he was a lecturer in Azad University. He joined the photonics center at school of Electrical and Electronics Engineering (EEE) in Nanyang Technological University (NTU) as a research associate in 2009 researching in thermal characterization and phonon transport in nanostructure materials. In 2010 he was awarded PhD scholarship from NTU and received his PhD in Microelectronics from NTU in December 2014. At the same time, he was an attached PhD in Singapore Institute of Manufacturing Technology and Exchange PhD student at University of Antwerp in Belgium. His main research focuses on heat transport and thermal characterization of nanostructured materials. He has published and presented several papers in international journals and conferences in the heat transport in carbon structure, thermoelectric and hard coatings materials.Abstract: