ICEESM2018 Keynote & Plenary Speakers

Prof. Kyle Jiang

 University of Birmingham, UK

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.

Title of Speech: Applications of nanostructures and nanomaterials 

Abstract: This talk covers some research at the University of Birmingham on practical applications of nanostructures and nanomaterials. The applications span from biomedicine to mechanical engineering and optics. Various micro and nano structures and nanomaterials are chosen to suit the applications. The fabrication processes of the nano structures and materials are explained. Performance of them is characterized and verified. The latest research results in dragonfly wings for air bearing applications are also reported, with images and a video clip showing clear benefits of using micro and nano structures for high speed bearings. 

 

Prof. Tatiana Perova

Trinity College Dublin, The University of Dublin, Ireland  

Biography: Prof. Perova completed her PhD at Leningrad State University in 1979. She joined the staff of Vavilov State Optical Institute (St. Petersburg, Russia) in 1979, where she was involved in the characterization of condensed matter using far-infrared and Raman spectroscopy. In 1998 Prof. Perova took a position of the Research Director of Microelectronic Technology Laboratory (MTL) at Trinity College Dublin and from 2007 she is the Director of MTL. Since 2011 she is a Fellow of Trinity College Dublin and since 2013 she is a Fellow Emeritus. Prof. Perova’s research interests are principally related to the optical characterization of condensed matter, with an emphasis on the analysis of the composition, stoichiometry, molecular orientation, stress and strain in amorphous solids, liquid crystals, photonic crystals and semiconductors. She has over 270 publications in books and referred journals. Prof. Perova has given numerous invited talks at Universities and Research Institutes in Europe, Russia, Australia and Mexico and several invited and keynote talks at International Conferences. Prof. Perova is acting as a Reviewer Editor for the journal Frontiers: Frontiers in Materials and is a member of the Editorial Board of Asian Chemistry Letters journal.

Title of Speech: Multichannel Si Photonic Crystal filters with Fine-Tuning Capability of Individual Channels for Sensing and Optical Interconnect Applications 

Abstract: Modern Silicon fabrication technology has advanced remarkably over the last two decades, demonstrating an unprecedented level of photonic integration [1-3]. Development of integrated compact multi-channel filters in particular, for applications including communication systems, multifunctional sensing and spectral imaging detection is an active area of research in this field. Vertically etched silicon 1D photonic crystals (PhCs) have attracted particular interest, due to their easy fabrication and integration onto a chip with in-plane light propagation. Other advantages of these structures are the possibility of tuning their optical properties, as well as their ease of adoption for micro/nano-fluidic devices
This presentation is focused on the theoretical and experimental investigations of the optical properties of Fabry-Pérot (FP) resonators based on a Si-air 1D PhC with coupled triple-cavity modes (or defects). These defects are obtained by filling selected air cavities in the 1D PhC with an actively reconfigurable fluid. By tuning the refractive index, n, of the filler between 1.5-1.7, efficient, tunable, coupled Fabry-Pérot resonators can be realized, resulting in a high quality factor, Q, and a wide stop band for broad frequency channel separation. The use of high-order resonances and stop-bands significantly extends the tuning range. With parallel tuning of n in all three cavities, a large number of narrow triple resonance peaks can be obtained within the wide stop-bands of different order in the wide infrared range of spectra. Simulations of cross-tuning of n, reveal splitting of the triple resonance peaks into a doublet and a single peak with significantly enhanced quality factor, Q=21,200.
The suggested coupled FP resonators design is CMOS compatible and these composite FP resonators have potential applications in biochemical and biomedical sensing, as well as for filtering and tuning of bandwidths in wavelength-division multiplexing systems integrated on silicon. Prototype devices were fabricated with three central cavities infiltrated with the nematic liquids crystal E7. Simulations of the electro-optical and optical properties of these devices were confirmed experimentally using polarized optical microscopy and spectroscopic measurements using fibre-coupling set-up.  

 

Prof. Witold Daniel Dobrowolsk

Polish Academy of Sciences, Poland  

Biography: Dr. Witold Dobrowolski is a Professor at the Institute of Physics of the Polish Academy of Sciences. He has spent nearly all his academic career at this Institute. He conducted research on narrow gap semiconductors and diluted magnetic semiconductors (called also semimagnetic semiconductors). His principal scientific interests are: (a) Physics of crystal growth and material processing of compound semiconductors, alloys, and semimagnetic crystals;
(b) Electronic transport phenomena, magneto- and quantum transport in semiconductors;
(c) Narrow-gap semiconductors - band structure, impurity levels, transport phenomena;
(d) Semimagnetic semiconductors - electronic and magnetic properties, magnetic phase diagram.
Current research interest covers magnetic interactions in III-V, II-VI, and IV-VI compounds (bulks, thin films, and nanoparticles), mutual interactions between magnetic ions and free carriers.
He has co-authored more than 200 scientific publications and a few book chapters.
He is editor-in-chief of Acta Physica Polonica A.

Title of Speech: IV-VI semiconductors: past, present, future 

Abstract: I will start my talk with information about the use of the lead sulfide - IV-VI semiconductor by ancient Egyptian. After a short description of the physical properties of the members of IV-VI material's group: PbS, PbTe, PbSe, GeTe, etc., I will tell about applications of these materials like diodes (first radio receivers), infrared detectors, lasers, thermoelectric devices, etc. The final part of my talk will be devoted to the very hot topic of the today semiconductor physics, i.e., topological insulators.  

 

 

Prof. Ji Wang

Ningbo University, China  

Biography: Professor Ji Wang has been a Qianjiang Fellow of Zhejiang Province at Ningbo University since 2002. Professor Ji Wang is the founding director of the Piezoelectric Device Laboratory, which is a designated Key Laboratory of City of Ningbo. Professor Ji Wang was employed at SaRonix, Menlo Park, CA, as a senior engineer from 2001 to 2002; NetFront Communications, Sunnyvale, CA, as senior engineer and manager from 1999 to 2001; Epson Palo Alto Laboratory, Palo Alto, CA, as Senior Member of Technical Staff from 1995 to 1999. Professor Ji Wang also held visiting positions at Chiba University, University of Nebraska-Lincoln, and Argonne National Laboratory. He received his PhD and Master degrees from Princeton University in 1996 and 1993 and bachelor from Gansu University of Technology in 1983. Professor Wang has been working on acoustic waves in piezoelectric solids for resonator design and analysis in his research with US and Chinese patents and over 120 journal papers. Professor Wang has been a member of many international conference committees and currently serving the IEEE UFFC Technical Program Committees of the Frequency Control and Ultrasonics Symposia, the IEEE MTT-S, and the IEC TC-49. From 2015, Profess Wang is the editor-in-chief of Structural Longevity.

Title of Speech: Optimal Orientations of Quartz Crystals for Bulk Acoustic Wave Resonators with Superior Frequency-temperature Properties 

Abstract: Piezoelectric crystals are widely used for acoustic wave resonators of different functioning modes and types including bulk acoustic wave (BAW) and surface acoustic wave (SAW) features. It is well-known that only some special orientations of crystals will exhibit desirable properties such as mode couplings, thermal sensitivity, acceleration sensitivity, and others that are important in design and applications of resonators for filters and sensors with different requirements. With extensive studies on physical properties in last few decades and industrial needs of novel products, it is necessary to comb the known knowledge of quartz crystal material for novel orientations and better products which are on the top of list of agendas in the industry.
With known material properties like elastic, piezoelectric, constants, and thermal constants, we established the relationships between vibrations and bias fields such as temperature to ensure a resonator immunizing from excessive response to changes resulting significant degradation of resonator properties and performances. Since the theoretical framework of wave propagation in piezoelectric solids is known, we used the existing data and results for the validation of current orientations in actual products. The agreement presented us needed confidence of the incremental thermal field and Mindlin plate theories and analytical procedures. Through double rotations, we calculated physical properties as functions of angles and bias fields, enabling the calculation of resonator thermal properties for the identification of optimal cuts. Surprisingly, we found some orientations which are not known before with excellent frequency-temperature properties of thickness-shear type resonators with double rotations intriguing to engineers. Such a procedure can also be applied to similar crystals for a careful examination of possible orientations to maximize the potential use of materials in acoustic wave resonators.  

 

 

 

 

ICEESM2017 Speakers

 

Prof. Jordi Llorca  
Technical University of Catalonia, Spain  
Prof. Tatiana Perova
Trinity College Dublin, The University of Dublin, Ireland  
Prof. Witold Daniel Dobrowolski
Institute of Physics Polish Academy of Sciences, Warsaw, Poland   
Prof. Yuri V. Vorobiev
Centro de Investigación y de Estudios Avanzados del IPN,  MÉXICO   
Dr. Anna Baldycheva
University of Exeter, UK