2018 3rd International Conference on Nanotechnology and Nanomaterials in Energy | June 22-24, 2018 | Milan, Italy†
Biography: Kyle Jiang is a fellow of IET, fellow of HEA, and board member of HKSME. He was awarded PhD degree in mechanical engineering by King’s College London in 1994.
Kyle Jiang is a professor in the School of Mechanical Engineering, University of Birmingham. He is the Director of Micro/Nanotechnology Research Centre at University of Birmingham. His research interest covers microengines, turbochargers, micro and nano fabrication and nanostructures for energy and biomedical applications. He is active in organising and participating European projects, EPSRC projects and Innovate UK projects. He has over 230 publications in books, book chapters and research papers in peer reviewed journals and international conference proceedings, including Nature Communications, Journal of Power Sources, Optics Express, and Nanotechnology. He is the inventor of 9 patents.
Professor Jiang was the General Chair of IEEE 12th International Conference on Nanotechnology (IEEENANO 2012), general Co-Chair of NSTSI11, Publicity Chair of IEEE NANO 2013, and chaired many conference sessions. He is an editorial member of several International Journals, and appointed as Birmingham City Ambassador.
Biography: Prof. Marco Casini is a leading academic in the Green and Smart Building sector with over 20 years experience in Building Sciences. He is an environmental engineer, PhD in Environmental Engineering and Professor of Architecture Technology and of Environmental Certification of Buildings at the Faculty of Architecture of Sapienza University. Since 2015 he is Executive Board member of Department PDTA and of Faculty of Architecture. Since 2016 he is the Faculty Advisor of Team Sapienza competing in Solar Decathlon ME 2018.
Prof. Casini's research activities cover a wide spectrum of topics within sustainable architectural design and energy efficiency of buildings, focusing on advanced materials and nanotechnologies for smart building envelopes as well as integrated renewable energy systems.
He has been member of several Public Technical Working Groups (Italian Environment Protection Agency, UNI, Bank of Italy, Italian technical body of the Conference of Regions and Autonomous Provinces, Regione Lazio) for the development of specific standards on environmentally sustainable construction.
He has authored over 70 scientific publications on energy and environmental efficiency of buildings, latest the book "Smart buildings: Advanced materials and nanotechnology to improve energy-efficiency and environmental performance" (Woodhead Publishing Elsevier, 2016).
Biography: Yuri V. Vorobiev obtained his Master Degree in Radio physics from Kiev State University (Kiev, Ukraine) in 1959, his PhD in Physics and Mathematics from Kiev State University in 1966, and Degree of Dr. Sci. in Physics of Semiconductors and Dielectrics from Institute of Semiconductor Physics of Ukrainian Academy of Science in 1984.
In 1986 became a full professor of National Polytechnic Institute NTUU KPI of Kiev. Since 1996 Professor Titular of CINVESTAV-Queretaro, that is a Material Research Center of National Polytechnic Institute of Mexico. Authored over 200 publications in books and referred journals, 10 patents, 4 textbooks, and supervised 46 Master and 10 PhD theses. The area of his scientific interests includes optoelectronics, semiconductor physics, devices and materials for solar energy conversion.
Prof. Vorobiev is a member of Ukrainian Engineering Academy and Academy of Sciences of High School of Russia. In 2005 obtained Award of Premio Nacional de CONAE, Mexico, for the best project in Renewable Energy Sources.
Title of Speech: Description of the optical properties of semiconductor quantum dots and nano pores based on the “particle in a box” problem with mirror boundary conditions
Abstract: Theoretical and experimental investigation of nanostructures with pronounced quantum confinement constitutes the most active part of modern material science. Despite the great amount of work in the field, just a few shapes of quantum dots (QDs) are thoroughfully analyzed in relation to the energies of electronic transitions, rectangular prism and sphere among them. Usually the analysis is based on the effective mass approximation, although it is evident that for small QDs its application could be questioned. The difficulties of analysing the QDs of the shape other than prism or sphere are in particular caused by the boundary conditions in solution of the Schrödinger equation which in many cases could not be written in simple analytical form. Recently we introduced a new mirror-like type of boundary conditions assuming that a particle (electron, hole) confined in a QD is specularly reflected by the boundary, and equalizing by absolute value the Ψ-function of a particle with that of its image in the boundary-mirror; the assumption is based on the data of STM showing a clear interference pattern near the surface of a solid created by incident and reflected electron’s de-Broglie waves. It is evident that the concept of mirror reflection from boundary of nanostructure is favorable for effective mass approximation, because it means an increase of the effective path of a particle in semiconductor material forming the structure. Besides, it allows an easy treatment of the nanopores in semiconductor as “inverted” quantum dots, with an equal mathematical procedure.
Here we present some results of application of the mirror boundary conditions within effective mass approximation to QDs and pores of several shapes, including those which could not be easily treated using traditional impenetrable walls conditions (like triangles, pyramids, cylinders etc), and the comparison of the calculated electron energy spectra with existing experimental data. In the cases of QDs previously studied (like spherical ones) we show that depending on the degree of quantum confinement which is determined by the probability of electron’s tunneling through the mirror-boundary, the electron energy spectra can be either identical to the one obtained with traditional treatment, or quite different from it; the experimental data confirm the importance of the latter case, particularly in description of the much used “core-shell” QDs.