SF Bay Area Nanotechnology Council

IEEE

4th Annual “Origin Stories” – Exploring Entrepreneurship
CEO/Founders discuss the technology and business aspects of building a successful company based on nanotechnology
Register: Here

Thurs Sept 19 – 5:30 PM to 9:40 PM
Early Registration: $11 to $17 – Light dinner included

Location: SEMI Global Headquarters
673 South Milpitas Boulevard, Milpitas

Presenting Companies include:

Gleb Yushin, Co-Founder and CTO, Sila Nanotechnology – silicon-dominant anode products that drop into existing battery manufacturing processes and deliver significantly higher energy density

Deepak Dugar, President and Founder, Visolis Biotechnology – displacing petroleum-derived material with engineered, bio-based alternatives


Peter Boyd
, President and Founder, Nano Hydrophobics – self-assembling non-stick coatings that reduce fouling in industrial equipment and improve energy efficiency


Ram Prasad Gandhiraman
, Founder and CEO, Space Foundry – A NASA spin off developing plasma jet based direct-write printing technology to enable next generation of printed electronics products and sensors

 

 


Recent Progress in Carbon Nanotube Logic Technology

Rebecca Park, PhD Candidate, Stanford University

Registration: HERE

Please register on Eventbrite before 8 PM on August 19

Tues August 20 – 11:30am: Networking & Pizza; Noon-1PM: Seminar
Cost: $4 to $6
Location: EAG Laboratories – 810 Kifer Road, Sunnyvale

 ABSTRACT:

 Tremendous effort has been made in exploring novel channel materials to complement silicon for future nanometer-scaled transistors. Among the viable options, carbon nanotubes (CNTs) are a potential candidate due to their high mobility and injection velocity despite their ultra-thin body thickness of 1 to 2 nm. Although carbon nanotube field-effect transistors (CNFETs) enable high-performance and energy-efficient digital systems, there are challenges that have yet to be solved.

carbon nanotube logic technology

   In this talk, I will review the significant progress that has been made in recent years which has brought us closer to realizing the full benefits that the CNT technology promises.

 

       

BIOGRAPHY:

 Rebecca Park received her B.S. from Cornell University in 2013 and is currently a Ph.D. candidate in Electrical Engineering at Stanford University, under the supervision of Professor H.-S. Philip Wong, co-advised by Professor Subhasish Mitra.

   Her current research interest is in the development of high-performance and energy-efficient nanoelectronics, in which she has focused on carbon nanotube-based FETs.

   Rebecca is a recipient of the Intel/SRCEA Masters Scholarship (2014-2016) and the Intel/SRCEA PhD Fellowship (2016-2019). Her internship experience includes working in the Science & Solutions team at IBM (2017 summer) and in the Flat Panel Displays team at Apple (2018 summer).

 


Industry Assessment of Emerging 3D Memory Technology Landscape
Prashant Majhi, Principal Engineer, Intel Corporation
Register: Here 

Tues July 9
4:15: Networking, Drinks
4:45: Seminar
Cost: Free
Location: Allen Center for Integrated Systems (CIS), Stanford University


This talk will highlight the primary challenges and opportunities in emerging memory technologies to replace existing mainstream (SRAM/DRAM/NAND) memory technology in the memory hierarchy.
In particular, an industry perspective of the various memory types (filamentary, interfacial, bulk) proposed for cross-point based 3D memory technologies will be presented and discussed.

           

Prashant Majhi is a Principal Engineer at Intel, involved in R&D of novel devices/materials/process technologies for the continued scaling of advanced CMOS and memory technologies.
He has driven many logic and memory technology development projects/programs through his 14 years at Intel (including his Intel assignment as Chief Technologist at SEMATECH) and 4 years at Philips Semiconductors (now NXP). He has (co)authored 250+ peer reviewed articles, holds 100+ patents, given 75+ invited talks, and co-advised 15+ PhD students from various universities.
He holds a PhD from Arizona State University and Bachelor of Technology from IIT Madras.


Bioinspired Materials Development for Next-Gen Batteries
Professor Dahyun Oh, Department of Materials Engineering, San José State University
Register: Here

Tues June 18 – 11:30am: Networking & Pizza; Noon-1PM: Seminar
Cost: $4 to $6
Location: EAG Laboratories – 810 Kifer Road, Sunnyvale

The demand for storing electricity is growing more rapidly than ever with the increased use of the mobile Internet of Things (IoT) devices and electric vehicles. Thus, safe and cost-effective batteries with high energy density are drawing significant interest in the field.
In this presentation, a sustainable method to develop battery electrode materials will be presented. By using biomaterials, a rod shape virus (M13 bacteriophage) or a cylindrical shape microbe (Escherichia coli, called as E. coli), the electrodes for lithium-based batteries were fabricated in an environmentally friendly way. Through the interaction between precursor ions and protein assemblies of virus molecules, a wide range of transition metal oxides nanowires has been synthesized at room temperature under aqueous synthesis conditions. Besides, microbes were used as a pore template to create an interconnected pore structure by using lengthy E. coli. These biotemplates are about one million times cheaper and are easier to remove than synthetic porogens such as silica or polystyrene beads.
The battery electrodes made in a bioinspired method have presented significant performance improvements in Li-ion batteries as well as Li-oxygen batteries. We believe that biomaterials driven material research can provide an efficient and environmentally benign way to build a high-performance device, in particular, next-generation energy storage system.
Read More: https://sites.google.com/sjsu.edu/energymaterialslab

               

Dahyun Oh is an assistant professor in the department of Materials Engineering at San José State University (SJSU). Her current research focuses on the development of next-generation energy storage devices including Li-ion, metal-oxygen, and solid-state batteries.
Prior to joining SJSU, Dahyun worked as a research scientist at IBM Almaden Research Center after her post-doctoral training at Massachusetts Institute of Technology (MIT). She received her Ph.D. in materials science and engineering (MSE) at MIT in 2014, after obtaining her B.S. degree in MSE at Seoul National University in 2008.


The Nanotech Council is sponsoring two events in May!

Sat May 11: San Jose State University Technical Showcase
      Time: 10 am to 5pm; Cost: Free

Keynote Lecture: Additively Manufactured Biomimetic Polymers

Dr. Ozgur Keles, Chemical and Materials Engineering Department, San Jose State University
Register: Here
      
Additive manufacturing (AM) is increasingly used for biomedical, automotive, space, defense, transportation, and consumer product applications. Fused deposition modeling (FDM) is most common AM technique that can produce polymer, composite, metal, and ceramic materials. FDMed materials, however, contain pores between the deposited beads. Moreover, we can intentionally add pores to any kind of design to decrease weight or to add functionality, such as heat or mass transport. These pores reduce mechanical properties and introduce variations in mechanical properties. Despite the increasing use of FDM, the effect of porosity on the mechanical behavior of FDMed materials are unclear. Our recent work showed that intentional vibrations or biomimetic deposition paths can be used to double mechanical reliability of FDMed polymers and polymer matrix composites. In this talk, I will discuss the origins of the mechanical reliability in porous polymers and deviations from Weibull statistics. In addition, I will detail how we can improve strength and toughness of porous polymers. Biomimetic meso-structure and vibration-assisted FDM approaches will be described to improve reliability in FDMed materials.
Read More: Mechanical reliability of fused deposition modeled polymers and composites
 
          

Dr. Ozgur Keles is an Assistant Professor of Chemical and Materials Engineering at San Jose State University. Dr. Keles received his B.S. and M.S. degrees from the Department of Metallurgical and Materials Engineering at Middle East Technical University, and his Ph.D. in Materials Engineering from Purdue University in 2013. Following, he joined Illinois Institute of Technology as a research associate and lecturer, where he investigated the reliability of porous glasses and porous pharmaceutical compacts. His work on the deviations from Weibull statistics in porous ceramics was highlighted at the Gordon Research Conferences and awarded by the American Ceramic Society. He is also a photographer and digital artist who uses aesthetically appealing images and computer visualizations to improve student engagement, to aid student learning, and to foster creativity in engineering students. His work at the intersection of engineering, education, and arts was also highlighted in the The Member Journal of TMS. His current research interests are stochastic fracture of additively manufactured materials and ceramics, mechanical behavior of quantum dot reinforced hierarchical composites, and virtual reality applications in engineering education.


Thurs May 23: Nanoscience at The Molecular Foundry
      Time: 9 am to 5pm; Early Registration: $25 to $75

Register: Here
     Supported by the Department of Energy Office of Basic Energy Sciences (BES) through their Nanoscale Science Research Center (NSRC) program, the Molecular Foundry is a National User Facility for nanoscale science serving hundreds of academic, industrial and government scientists around the world each year.
The IEEE Nanotechnology Council is hosting several staff and users at an event in the South Bay (Milpitas) to speak and network with engineers and scientists in our area.

X-ray Fourier Holography Takes Off
Dr. Taisia Gorkhovera, Stanford PULSE Institute, SLAC National Laboratory
Register: Here

Tues April 2 – 11:30am: Networking & Pizza; Noon1PM: Seminar
Cost: $4 to $6
Location: EAG Laboratories – 810 Kifer Road, Sunnyvale

     Most of our high-resolution imaging methods have to compromise between temporal or spatial resolutions, similar to a pinhole camera. If the entrance pinhole is very small, the resulting image is crisp, but requires a long exposure and thus, is less suitable to capture moving objects. One can increase the pinhole diameter and thus, increase the temporal resolution, but this comes at a cost of the sharpness of the image.
     Of course, our microscopic tools have greatly evolved over time, but this original problem still limits our capabilities to observe fast processes at the nanoscale. Examples include chemical and catalytic reactions, nucleation dynamics and growth of nanoparticles, and other phenomena which are short-lived. One idea to overcome this obstacle is to use an illumination source, which is capable of producing intense short wavelengths radiation such as X-rays within very short exposure times.
     X-ray Free Electron Lasers (FELs), such as the LCLS at SLAC, are capable of producing very bright bursts of coherent X-rays within a few femtoseconds. This large-scale technique offers unique opportunities to visualise fast processes via coherent X-ray diffractive imaging. Coherent X-ray diffractive imaging, however, suffers from intrinsic loss of phase, and therefore structure recovery is often complicated and not always uniquely-defined. Here, we introduce the method of in-flight holography, where we use nanoclusters as reference X-ray scatterers in order to encode relative phase information into diffraction patterns of a virus. The references (small spherical nanoparticles) and the bio samples are injected into random positions within the FEL focus. Using in-flight holography, we were able to reconstruct the unknown relative orientation of the reference and the sample. In a second step, we used Fourier X-ray holography to reconstruct the shape of the specimen.
In my talk I will report on several studies exploring the in-flight holography principle. Moreover, I will discuss future capabilities and applications for X-ray FELs and the possibility of future table-top experiments.
 

     

After her graduate studies at the Technical University of Berlin in Germany, Dr. Taisia Gorkhover joined SLAC in 2014 as a Peter Paul Ewald fellow from the Volkswagen Foundation. Gorkhover has been a spokesperson for three LCLS experiments and a collaborator in more than 15, and she co-authored or led more than 30 publications in high-impact journals. She has received the 2018 LCLS Young Investigator Award, granted to early-career scientists in recognition of exceptional research using the Linac Coherent Light Source (LCLS) X-ray free-electron laser at the Department of Energy’s SLAC National Accelerator Laboratory. Dr. Gorkhover was one of four SLAC scientists to win the Department of Energy’s Early Career Research Program award in March 2018. In 2016, she was the first female scientist to receive the Panofsky Fellowship, named after the laboratory’s founder and first director.

     “I’m interested in developing new imaging methods that are becoming possible because of XFELs,” says Gorkhover. “My main motivation is to see how we can use this exciting technology to learn about the behavior of complex nanoscale systems.”

Nanotechnology for Imaging and Radiation Therapy
Professor Lei Xing, Director of Medical Physics, Stanford University
Register: Here

Tues Feb 19, at Varian Medical Systems Cafe, 3130 Hansen Way, Palo Alto
 
     11:00 am: Lunch (buy or bring your own)
      12:00 noon: Seminar (free)

During the last decade tremendous progress has been made in nanotechnology and nanomedicine. These developments have provided significant opportunities to advance medical practice and patient care. In this talk I will first present an overview of nanotechnology. The need for molecular imaging and nanomedicine will be highlighted. I will then talk about our recent research on using nanoparticles for high resolution and high sensitivity X-ray molecular imaging, including X-ray luminescence computed tomography, X-ray fluorescence computed tomography, Cerenkov imaging and its potential application in image guided surgery. Nanotechnology for radiation therapy enhancement will also be discussed.
 
                     
Lei Xing, Ph.D., is the Director of Medical Physics Division and the Jacob Haimson Professor of Medical Physics in the Departments of Radiation Oncology and Electrical Engineering (by courtesy) at Stanford University. His research has been focused on artificial intelligence in medicine, biomedical data science, medical imaging, inverse treatment planning, image guided interventions, nanomedicine, and molecular imaging. Dr. Xing is on the editorial boards of a number of journals in medical physics and imaging, and is recipient of numerous awards. He is a fellow of AAPM (American Association of Physicists in Medicine) and AIMBE (American Institute for Medical and Biological Engineering).

X-Rays Reveal the Secret Life of Batteries
X-ray Microscopy of Operating Electrochemical Energy Storage Systems
Dr. Johanna Nelson Weker, Stanford Synchrotron Radiation Lightsource
Register: Here

Tues Jan 15 – 11:30am: Networking & Pizza; Noon-1PM: Seminar
Cost: $4 to $6
Location: EAG Laboratories – 810 Kifer Road, Sunnyvale
     Hard X-ray transmission X-ray microscopy (TXM) is an ideal tool for in situ and operando studies of functional materials and materials synthesis routes. The high energy X-rays provides relatively relaxed restrictions on in situ environments enabling high resolution 2D microscopy and tomography (3D microscopy) across a large range of pressures and temperatures and in varying gas or liquid environments. The full field geometry of TXM allows imaging at the sub-second time scale, allowing relevant dynamics to be captured during, for example, battery cycling, catalysis reactions, electrochemical synthesis, and corrosion. Moreover, by tuning the incident X-ray energy to specific absorption edges, TXM can capture elemental and chemical (spectro-microscopy) changes at 30 nm resolution within a few minutes (see figure).
            
Li-ion batteries promise the high specific capacity required to replace the internal combustion engine with a number of possible earth abundant electrode materials; however, setbacks such as capacity fading hinder the full capability of these rechargeable batteries. In the search for better electrode materials, high resolution X-ray microscopy during typical battery operation is vital in understand and overcoming the failure mechanisms of these materials. I will discuss the use of X-ray microscopy including spectro-microscopy and nano-tomography to track electrochemical and morphological changes in the electrode material in real time during typical battery operation.
                  
Dr. Johanna Nelson Weker is a staff scientist in the Materials Science Division at the Stanford Synchrotron Radiation Light source at SLAC National Accelerator Laboratory. Her research centers on X-ray microscopy of materials under realistic (in situ) and/or operating conditions. Her recent work has included characterizing energy storage materials in situ with X-ray microscopy, diffraction, and absorption spectroscopy. She also uses X-ray microscopy to characterize catalytic materials and study the selective laser melting process of alloys for advanced manufacturing. Dr. Nelson Weker graduated in 2005 with a B.S. in mathematics and physics from Muhlenberg College. She received her Ph.D. in physics from Stony Brook University in 2010, where she studied coherent diffractive imaging.

Nanomanufacturing: Latest and Cutting-Edge Technologies
Register: Here

See the below flyer in higher definition >here<

 


Nanophotonic Control of Thermal Radiation for Energy Applications

Dr. Wei Li, Stanford University

Where: EAG Laboratories – 810 Kifer Road, Sunnyvale (Parking: on street or in parking lot behind EAG)

When: Tuesday, October 16, 2018

11:30AM: Networking, Pizza & Drinks

Noon – 1PM: Seminar

 

ABSTRACT:

   The ability to control thermal radiation is of fundamental importance for a wide range of applications. Nanophotonic structures, where at least one of the structural features are at a wavelength or sub-wavelength scale, can have thermal radiation properties that are drastically different from conventional thermal emitters, and offer exciting opportunities for energy applications. Here we review recent developments of nanophotonic control of thermal radiation, and highlight some exciting energy application opportunities, such as daytime radiative cooling, thermal textile, and thermophotovoltaic systems that are enabled by nanophotonic structures.

 SPEAKER: Dr. Wei Li

 SPEAKER BIOGRAPHY:

   Dr. Wei Li is a postdoctoral research fellow working with Prof. Shanhui Fan at the Edward L. Ginzton Laboratory at Stanford University. He received his Ph.D. degree from Vanderbilt University in 2016. His research interests mainly focus on nanophotonics and thermal radiation control, as well as energy applications such as solar energy harvesting and radiative cooling. His work has been highlighted in IEEE Spectrum, Nature Materials, C&EN and several others.

Read More: Nanophotonic control of thermal radiation for energy applications