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    Lecture from Dr. Norbert Radacsi, The University of Edinburgh

    Editor:yaoxx Date:2017-12-16 Hits:2412




    Speaker: Dr. Norbert Radacsi

    Affliation: The University of Edinburgh
    Time: 10:30am-12:00noon, Dec. 20th, 2017
    Location: 7th floor of Chao Kuang Piu Hall of Science and Technology,Yuquan Campus, Zhejiang University (浙大玉泉校区曹光彪楼七楼会议室)



    Part 1 presentation: Advances in Electrospinning Technology: Needleless and 3D Electrospinning for Energy and Medical Applications

    Part 2 presentation: Introduction about Edinburgh Engineering


       

    Abstract of Presentation 1


    The promise of nanotechnology cannot be realized without efficient and inexpensive production of nanometer-sized objects, which must further be prevented from coalescing into larger objects devoid of nanoscale properties. Electrospinning technology has been recognized as an efficient technique for the fabrication of polymer nanofibers on large scales, opening actual perspectives for industrial production. Various polymers have been successfully electrospun into ultrafine fibers, demonstrating the application of electrospinning technology in many different fields, like drug delivery, tissue engineering, regenerative medicine, photonics, electronics, water/air filtration, etc. In this talk I will talk about needleless electrospinning, and its application in solid acid fuel cells for improved performance. The second part of the talk will the on a new electrospinning method, called 3D electrospinning. The combination of electrospinning with 3D printing technology opens new pathways for nano- and microfabrication, which can be applied in a wide range of application. This simple and inexpensive method was proven to fabricate 3D fibrous polystyrene structures with controlled morphology and micro to nano-fibre diameter. The controllable movement of the nozzle allows precise positioning of the deposition area of the fibres during electrospinning. A programmed circular nozzle pattern results in the formation of 3D polystyrene cylinder shapes with fibre diameters down to 560 nm. The assembly of the fibrous structures starts instantaneously, and a 4 cm tall and 5 cm wide sample can be produced within a 10-minute electrospinning process. The shape, size, and thickness of fibrous polystyrene structures can be easily controlled by tuning the process parameters. It is assumed that the build-up of 3D fibrous polystyrene structure strongly depends on charge induction and polarization of the electrospun fibres.



    Biosketch

     
    Norbert graduated in physics from the University of Debrecen in 2006. Then he volunteered to the Hungarian Defence Forces, where he served as a military pilot for 2 years. In 2008 Norbert went to The Netherlands to obtain his Ph.D. at the Delft University of Technology (TU Delft) in chemical engineering. After defending his Ph.D. in 2012, he stayed as a postdoctoral research associate at TU Delft for almost 1 year. Then Norbert went to the USA to do a one-year postdoctoral research at Purdue University in developing novel drug delivery methods. The next station in his career was at California Institute of Technology (Caltech), where focused on the fabrication of nanostructured fuel cell electrodes as a postdoctoral research associate. Soon Norbert got promoted to a (staff) research associate in 2015 at Caltech, and he expended his research with producing pharmaceutical mats and catalyst nanofibers. He went on to become a Lecturer in Chemical at The University of Edinburgh in 2016. Norbert’s research focuses on fabricating nanostructured batteries, fuel cells and supercapacitors on the energy side; and on fabricating nanostructured pharmaceutical mats, biosensors and artificial organs on the medical side.  



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    Dr.Norbert Radacsi