IEEE Nanotechnology Materials and Devices Conference (NMDC)
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Archive for the ‘2021’ Category

Davide Fabiani

Sunday, October 25th, 2020

Piezoelectric Nanofibers for Smart Material Development

Davide Fabiani, University of Bologna

Abstract:

This paper illustrates that multifunctional materials with piezoelectric properties can be used self-sensing structural material and for energy harvesting applications: PVdF nanofibers, in particular with core-shell configuration show the best features for sensing applications while PZT nanofibers can be used more effectively for energy harvesting devices.

Bio:

Davide Fabiani is Associate Professor at the University of Bologna since 2014. His research interests in the field of Electrical Engineering are focused in particular on the development of nanomaterials for electrical, electronic and energy applications, the study of aging and diagnostics of electrical insulators. Currently he focuses his research on piezoelectric nanofibers for smart material manufacturing and on the development of non-destructive diagnostic techniques to evaluate the state of electric cable insulation.Hhe graduated in Electrical Engineering with honors in 1997 and in 2001 he obtained the Ph.D. in Electrical Engineering at the University of Bologna.

 

 

David Gracias

Sunday, October 25th, 2020

3D Nanofabrication by curving, bending, and folding

David Gracias, Professor, Department of Chemical and Biomolecular Engineering, Johns Hopkins University

Abstract:

Conventional VLSI lithographic patterning approaches have revolutionized modern engineering, but they are inherently planar. Recently, researchers have discovered that the interplay between out-of-plane stresses, capillary forces or swelling vs bending rigidity of patterned thin films can be engineered so as to cause spontaneous 2D to 3D shape transformations by curving, bending, and folding in a reproducible and high-throughput manner.

In this talk, the design, assembly, and characterization of such 3D nanostructured materials and devices will be described. The emphasis of our approach has been on enabling mass-production of lithographically micro, nano, and smart 3D devices in a high-throughput manner with diverse materials such as 2D layered materials (e.g. graphene, MoS2), silicon and related materials, polymers (e.g. SU8) and hydrogels. By leveraging the precision of planar lithography approaches such as photo, e-beam, and nanoimprint methodologies, a range of functional patterns can be incorporated into these thin film self-assembling systems so as to provide enhanced functionality for optics, electronics, and medicine. Assembled devices include metamaterials, flexible biosensors, curved microfluidics, drug-delivery capsules, anatomically realistic models for tissue engineering, antennas, e-blocks, sensors, soft-robotic actuators, and untethered surgical tools.

Biography:

David Gracias is a Professor at the Johns Hopkins University (JHU) in Baltimore. He did his undergraduate at the Indian Institute of Technology, received his PhD from UC Berkeley, did post-doctoral research at Harvard University and worked at Intel Corporation prior to starting his independent laboratory at JHU in 2003. Prof. Gracias has pioneered the development of 3D, integrated micro and nanodevices using a variety of patterning, self-folding and self-assembly approaches.  He has co-authored over 190 technical articles, holds 33 issued patents and has delivered over 100 invited technical talks. Prof. Gracias has received a number of major awards including the NIH Director’s New Innovator Award, Beckman Young Investigator Award, NSF Career Award, Camille Dreyfus Teacher Scholar Award, Beckman Young Investigator Award, and Friedrich Wilhelm Bessel Award. He is a Fellow of the American Institute for Medical and Biological Engineering (AIMBE), Royal Society of Chemistry (RSc), American Association for the Advancement of Science (AAAS) and the Institute of Electrical and Electronics Engineers (IEEE).

 

Christopher Homes

Sunday, October 25th, 2020

Progress in High-Dielectric Constant Materials

Christopher Homes, Brookhaven National Laboratory

Abstract:

The static dielectric constant of a material Ɛ0 is a scaling factor for capacitors and the devices based upon them; the larger the dielectric constant, the greater the degree of miniaturization. Materials with a dielectric constant greater than that of silicon nitride (Ɛ0 ~ 7) are referred to as high-dielectric constant materials. Values of Ɛ0 ~ 100 are typical in rutile (titanium dioxide); however, values in excess of 104 are observed in barium titanate in the region of the ferroelectric transition – while this value is impressive, it is not very useful due to the strong temperature dependence. The observation of Ɛ0 ~ 105 in the calcium copper titanate (CaCu3Ti4O12) material sparked considerable interest because it showed little temperature dependence between 100 – 600 K. Optical and impedance spectroscopies revealed that the high dielectric constant in this material was ultimately due to the extrinsic internal boundary layer capacitance effect. Unfortunately, the dielectric losses in these materials are relatively high. A new strategy to achieve high dielectric permittivity with low loss involves using localized lattice defect states through ambipolar co-doping; these intrinsic defect complexes give rise to strong dipoles that are responsible for Ɛ0 in excess of 104, with exceptionally low dielectric losses over most of the radio frequency range and excellent thermal stability, will allow further scaling advances in electronic devices.

Bio:

Christopher Homes is a Physicist (with tenure) and a member of the Electron Spectroscopy Group in the Condensed Matter Physics and Material Science Department at Brookhaven National Laboratory (BNL). His research is focused on the complex optical properties of quantum materials, including topological and strongly correlated electron systems, with an emphasis on emergent phenomena. Previous work has examined the optical properties of the cuprate and iron-based superconductors, as well as high-dielectric constant materials; recent work deals mainly with the Dirac and Weyl semimetals. Prior to arriving at BNL in 1996, he was a postdoctoral fellow at Simon Fraser and McMaster University. He received his M.Sc. and Ph.D. in physics from the University of British Columbia, and his B.Sc. in physics from McMaster University. He is a Fellow of the American Physical Society and a recipient of the Brookhaven Science and Technology Award.

 

Elena A. Rozhkova

Sunday, October 25th, 2020

Merging Nanotechnology & Synthetic Biology toward Directed Evolution of Energy Materials

Elena A. Rozhkova, Argonne National Laboratory

Abstract:

The biological use of solar energy for synthesis of fuels from water and carbon dioxide inspires researchers and engineers in their efforts to replace exhaustible energy sources with renewable technologies. Eco-friendly photocatalytic energy conversion, known as artificial photosynthesis, along with inorganic materials, also uses biological structures, such as molecules, enzymes, machineries or whole microorganisms that can capture light, break down water, and reduce carbon dioxide and protons. In this talk, I will show that merging nanotechnology, biotechnology and synthetic biology approaches allows for systemic manipulation at the nanoparticle−bio interface toward directed evolution of energy materials, novel environmentally friendly catalytic, “artificial life” systems and, ultimately, to circular economy. For example, purple membranes isolated from Halobacteria or, more recently, obtained via cell-free synthetic biology approaches, were integrated with TiO2 nanoparticles to produce hydrogen or reduce carbon dioxide to value-added chemicals. These new functions are not typical of the host microorganism. On the other hand, interplay between plasmon resonance of noble metal nanostructures and the natural mechanisms of these light-sensitive membranes in the engineered hollow hybrids led to an “artificial cell” capable of photosynthesis of adenosine triphosphate (ATP), a universal energy-carrying biomolecule.

Bio:

Elena A RozhkovaDr. Rozhkova earned her Ph.D. in Chemistry at the Moscow State Institute for Fine Chemical Technology. She worked in Japan as a Japan Society for Promotion of Science (JSPS) postdoctoral fellow at the Institute of Multidisciplinary Research for Advanced Materials, Tohoku University. After moving to the US in 2003, she became a research staff member at the Chemistry Department of Princeton University, and later she moved to Chicago. Since joining the Center for Nanoscale Materials at Argonne National Laboratory in 2007, Elena has been focusing on a general theme of Nano-Bio Interfaces, one of the most exciting interdisciplinary research fields of our time. Success in this area can lead to the solution of emerging problems of civilization, for example, to provide alternative sustainable energy, to advance medical technologies in the diagnosis and treatment of incurable diseases. Rozhkova is a recipient of JSPS fellowship (2000), Brain Research Foundation Fay/Frank Women’s Council Award (2007), the U. of Chicago Argonne LLC Board of Governors Distinguished Performance Award and a medal (2013), Prof. M. J. Nanjan Fourth Endowment Lecture Award “For outstanding contributions in the field of nano-biotechnology” (2018). She was named an IEEE Nanotechnology Council Distinguished Lecturer 2021.

 

Chuan Seng Tan

Sunday, October 25th, 2020

Development, Testing, and Integration of Silicon and Glass Substrates for Advanced Ion Trap Design

Chuan Seng Tan, Nanyang Technological University, Singapore

 Abstract:

Surface electrode ion trap is a promising candidate for quantum information processing (QIP), due to its feasibilities towards large-scale fabrication and on-chip electro-optical integration. In this paper, surface electrode ion traps on different substrates (e.g., high-resistivity silicon, silicon with ground plane and glass) are fabricated, assembled and tested.

To simultaneously leverage the established fabrication technique of silicon and superior insulation property of glass, we further demonstrate a novel ion trap design with heterogenous integration of silicon and glass, acting respectively as ion trap and interposer substrates. The vertical connection between the silicon ion trap and the glass interposer is achieved by through silicon via (TSV) and micro bump. This silicon-glass integrated system advances the development of ion trap and enriches the toolbox of scalable QIP.

Bio:

Chuan Seng Tan (SMIEEE, FIMAPS) received his B.Eng. degree in electrical engineering from University of Malaya, Malaysia, in 1999. Subsequently, he completed his M.Eng. degree in advanced materials from the National University of Singapore under the Singapore-MIT Alliance (SMA) program in 2001. He then joined the Institute of Microelectronics, Singapore, as a research engineer where he worked on process integration of strained-Si/relaxed-SiGe heterostructure devices. In the fall of 2001, he began his doctoral work at the Massachusetts Institute of Technology, Cambridge, USA, and was awarded a Ph.D. degree in electrical engineering in 2006. He was the recipient of the Applied Materials Graduate Fellowship for 2003-2005. In 2003, he spent his summer interning at Intel Corporation, Oregon.

He joined NTU in 2006 as a Lee Kuan Yew Postdoctoral Fellow and since July 2008, he was a holder of the inaugural Nanyang Assistant Professorship. In March 2014, he was promoted to the rank of Associate Professor (with tenure). In September 2019, he was promoted to the rank of Full Professor. His research interests are semiconductor process technology and device physics. Currently he is working on process technology of three-dimensional integrated circuits (3-D ICs), as well as engineered substrate (Si/Ge/Sn) for group-IV photonics. He has numerous publications (journal and conference) and IPs on 3-D technology and engineered substrates. Nine of his inventions have since been licensed to a spin-off company. He co-edited/co-authored five books on 3D packaging technology.