Research into Antimony Crystals Leads to Unexpected Energy Results
A team Led by Professor Matt McDowell (GT-ME), working with scientists from ETH Zürich and Oak Ridge National Laboratory, discovered an unexpected property of nanometer-scale antimony crystals -- the spontaneous formation of hollow structures -- could help give the next generation of lithium ion batteries higher energy density without reducing battery lifetime. The reversibly hollow structures could allow lithium ion batteries to hold more energy and provide more power between charges.
"These are important research findings at the nanoscale, enabled by up-to-date instrumentation and infrastructure facilities," says Larry Goldberg, a program director in NSF's Directorate for Engineering.
Authored by lab member Anoush Daruwalla, a new publication from the Ayazi lab discusses a new high-Q silicon distributed Lamé mode resonator (DLR). By employing shear wave propagation to enable a cascade of small square Lamé modes in beam or frame configurations and high efficiency nano-gap capacitive transduction, the resonator enables low motional impedances while scaling the frequency to VHF range. Testing results on packaged demonstrations have displayed robustness against temperature cycling, device thinning, and aging effects. Additionally, high manufacturability across different silicon substrates and process specifications make the resonator a promising candidate for 5 G and other IoT applications. Read the Research Here.
Animation of the high frequency distributed Lame mode and the low frequency flexural mode from the same structure, which can be used for high frequency temperature-stable oscillators. Inset figures show a colorized SEM image, wafer-level packaged device die, and a cross section of the capacitive nano-gaps enabled by the HARPSS process.
Professor W.H. Yeo, GT ME & BioE, has been on a publication roll since his arrival on campus. His research in the field of flexible electronics for healthcare are not only cutting edge advances for science, but are often accompanied by interesting and well composed imagery. His work was featured on the cover of ACS Applied Materials [ June 3, 2020 Volume 12, Issue 22 Pages 24531-25520]
A printed, soft, nanostructured strain sensor with silver nanowires. The ultrathin, low-profile sensor demonstrates an enhanced adhesion, multiple reusability, and excellent wearability on both structural health monitoring and human physiology detection.
Released today, July 10, Yeo's new piece in Nature Communications "All-printed nanomembrane wireless bioelectronics using a biocompatible solderable graphene for multimodal human-machine interfaces" reports a new class of additive nanomanufacturing of functional materials that enables a wireless, multilayered, seamlessly interconnected, and flexible hybrid electronic system. The article includes a collection of quality figures covering every stage of the fabrication process.
We are eager to have you return to the facility per Georgia Tech’s research ramp-up plan. However, there are a few items users will have to complete before work can commence. We encourage you to begin to address these items sooner rather than later.
The IEN and IMat Leadership Tool Highlight: Nanoscribe Photonic Professional GT
The IEN Biocleanroom houses a variety of printing and fabrication tools including the Nanoscribe Photonic Professional GT. The Nanoscribe Photonic Professional GT is a next generation 3D laser lithography system that sets new standards in 3D micro printing and maskless lithography. It combines two writing modes in one device: an ultra-precise piezo mode for arbitrary 3D trajectories (FBMS) and the high-speed galvo mode (MBFS) for fastest structuring in a layer-by-layer fashion. The system offers a high degree of automation for direct manufacturing and allows for many direct write applications.
The Nanoscribe has the following key features: Highest resolution commercially available micro 3D printer, high speed 3D printing by galvo technology, accurate and precise by piezo technology, two photon polymerization (2PP) of various UV-curable photoresists, writing area up to 100 × 100 mm² range, high-sensitivity microscope camera for real-time observation of the printing process, user-friendly software package for 3D printing workflow, and easy CAD import via STL file format.
Micro-optics, Diffractive Optics
Optical Security Labels
Photonic Crystals & Metamaterials
Rapid Prototyping & Small Series Production
IEN’s Biocleanroom is open to Georgia Tech academic users, large and small companies, and external academic and government research institutions. IEN’s shared cleanroom facilities are part of the NSF-funded National Nanotechnology Coordinated Infrastructure (NNCI), a network of 16 academic nanofabrication and characterization sites and their partners in the U.S.
For more information, contact Linda Tian at: email@example.com
This statuesque Buzz placed in front of a dime is only 1mm tall. The mini mascot was created by Devin Brown on the Nanoscribe Photonic Professional GT 3D-Direct Laser Write (DLW) system.
Distinguished Lecture Series: Future Wireless – Game-Changing Technology for Communicating, Sensing and Powering
Wed. July 29 | 11:00 AM EST & 8:00 PM EST | Online
Ke Wu | NSERC Industrial Research Chair in Future Wireless Technologies; Poly-Grames Research Center, Dept. of Electrical Engineering, Ecole Polytechnique (Univ. of Montreal)
Abstract: Recent research and development of hardware architectures and technologies over MHz-through-THz frequency range have generated a significant momentum for future wireless applications. This leap forward is being propelled by the organic fusion of multiple functions and the scalable integration of multiple technologies through heterogeneous materials and innovative processes. This presentation begins with the overview of fundamental wireless functionalities. Emerging diversity scenarios and integration solutions in wireless technologies are reviewed in connection with performance and efficiency. Technological roadmap is highlighted with reference to enabling and building technological elements, ranging from current and emerging compound materials to evolving and beyond CMOS, and from developing substrate integrations to future electromagnetic techniques. The talk also provides a brief tour of the state-of-the-art and future wireless systems including various biomedical applications and healthcare services. Challenging issues and future directions of wireless technology and system development including 5G and beyond are discussed
Bio: Dr. Ke Wu is Professor of Electrical Engineering at Polytechnique Montreal (University of Montreal). He holds the NSERC Industrial Research Chair in Future Wireless Technologies. He has been the Director of the Poly-Grames Research Center. He was the Canada Research Chair (2002-2016) in RF and millimeter-wave engineering and the Founding Director (2008-2014) of the Center for Radiofrequency Electronics Research of Quebec. He has authored/co-authored over 1300 referred papers, and a number of books/book chapters and more than 50 patents.
Toolbox for Nucleation & Crystal Growth at Single Entity Resolutions by Controlling Nanoscale Transport
Gangli Wang - Professor of Chemistry, Georgia State University
July 16, 2020 | 11AM EST | The Cyber
Abstract: A new method named ‘NanoAC’ is developed to monitor and actively control the nucleation and crystal growth insitu at individual level, or at single entity resolution. The formation and growth of a single atto-liter droplet which ultimately transforms into a single crystal, one at a time, under electroanalytical sensing together with optical imaging, is regulated under an external electrical field. The toolbox uses a quartz capillary with a single nanometer sized opening, i.e. a nanopore, to confine materials exchange between an analyte solution and a precipitating solution. Protein insulin and lysozyme are used as prototype materials system. Combined electroanalytical measurements and optical imaging provide vital feedbacks for the active control of mass transport through the single nanopore. Passive diffusion as well as active migration under an external electrical field controls the kinetics of transport and thus phase transitions. The nanopore region limits the mass exchange between internal precipitants and external sample solutions separated by this single nanopore, through which the transport of charges generates current signal as a quantitative measure. The methodology, including the measurement characteristics as feedbacks and the control of mass transport, are generalizable for other materials system. The governing mechanism is explained by the fundamental mass transport at nanometer scale interfaces.
Bio: Dr. Gangli Wang got his B.S. and M.S. degrees from Peking University in 1996 and 1999 respectively. He received his Ph. D. degree under the direction of Dr. Royce Murray at the University of North Carolina at Chapel Hill in 2004. After a postdoc training with Dr. Henry White at the University of Utah, Gangli started his independent career at Georgia State University in Atlanta. He is currently a full professor of chemistry. The main thrust of his research is centered at the nanoelectrochemistry regime, to gain fundamental insights for better energy and biomedical applications.
The live webinar will consist of a 50 minute presentation, followed by a Q&A. The webinar is free but requires a registration.
Abstract: There are many instances where the surface of materials are designed/functionalized in order to optimize properties and improve device performance; there are other instances where the surface becomes compromised and the material/device performance degrade.
AES, XPS, and ToF-SIMS are the three most common surface analysis techniques, providing complimentary information regarding composition/microstructure of the surface of a sample. This presentation will introduce AES, XPS, and ToF-SIMS, show typical data, and discuss how the data helped understand mechanisms and/or resolve material problems.
Nanostructured Materials: Plasmonics in Nanocomposite Materials Symposium
March 14-18, 2021 | 2021 TMS Annual Meeting & Exhibition | Orlando World Center Marriott | Orlando, Florida