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DTSTART;TZID=America/Los_Angeles:20220816T180000
DTEND;TZID=America/Los_Angeles:20220816T190000
DTSTAMP:20260611T225528
CREATED:20220812T003927Z
LAST-MODIFIED:20220812T003927Z
UID:18962-1660672800-1660676400@www.siliconvalleyacs.org
SUMMARY:Extreme Mechanics of Soft Functional Materials
DESCRIPTION:Prof. Lihua Jin\, Mechanical and Aerospace Engineering\, University of California\, Los Angeles\nSponsored by the Golden Gate Polymer Forum\nAugust 16\, 6-7pm\, Online via Zoom\, Free/$5 Donation\, Registration required (Deadline Aug. 15@1pm)\n\nSoft robotics and stretchable electronics are transforming the fields of robotics and biomedical devices\, in that they are capable of sustaining large deformation and interacting safely with fragile objects and human beings. Soft functional materials\, as the building blocks of soft robotics and stretchable electronics\, are typically subjected to extreme mechanical conditions\, such as large deformation\, cyclic loading\, and fracture. In this seminar\, I will present our recent progress in modeling and charactering extreme mechanics of soft functional materials. Liquid crystal elastomers (LCEs) are special polymers combining cross-linked elastomers with rod-like liquid crystal mesogens\, aligning in a certain direction\, called the director. Combining theory and experiments\, we show that the directors of a LCE can reorient with stress in a highly rate-dependent manner. We further investigate the coupling between stress and director fields at a crack tip\, and observe significant and highly inhomogeneous director rotation\, resulting in crack-tip stress and strain distributions of LCEs distinct from those of regular elastomers. Stretchable carbon nanotube electrodes are used in various stretchable electronic devices. When deformed\, they show characteristic resistance–strain hysteresis. We use coarse-grained molecular simulations together with experiments to unravel the microstructural origin of the resistance–strain hysteresis. Finally\, we study fracture of thin conducting/semiconducting films. We have developed a new testing methodology to measure the fracture energy of free-standing ultrathin films. We further demonstrate that the fracture strain of a thin film is not an intrinsic material property\, but can be significantly augmented by tuning interfacial properties. \nSpeaker Background & Research Interests: \n\nLihua Jin is an assistant professor in the Department of Mechanical and Aerospace Engineering at the University of California\, Los Angeles (UCLA). Before joining UCLA in 2016\, she was a postdoctoral scholar at Stanford University. In 2014\, she obtained her PhD degree in Engineering Sciences from Harvard University. Prior to that\, she earned her Bachelor’s and Master’s degrees from Fudan University in 2006 and 2009. Jin’s group conducts research on mechanics of soft materials\, stimuli-responsive materials\, instability and fracture\, soft robotics\, and biomechanics. Lihua was the winner of Haythornthwaite Research Initiative Grant from American Society of Mechanical Engineers in 2016\, Extreme Mechanics Letters Young Investigator Award in 2018\, Hellman Fellowship in 2019\, UCLA Faculty Career Development Award in 2020\, and NSF CAREER Award in 2021.
URL:https://www.siliconvalleyacs.org/event/extreme-mechanics-of-soft-functional-materials/
LOCATION:Virtual
CATEGORIES:Dinner Meeting
ATTACH;FMTTYPE=image/jpeg:https://www.siliconvalleyacs.org/wp-content/uploads/2021/09/Golden-Gate-Polymer-Forum.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20220922T183000
DTEND;TZID=America/Los_Angeles:20220922T193000
DTSTAMP:20260611T225528
CREATED:20220909T001645Z
LAST-MODIFIED:20220909T001645Z
UID:19104-1663871400-1663875000@www.siliconvalleyacs.org
SUMMARY:Tightly-Bound Polymers
DESCRIPTION:Prof. Frank Blum\, Department of Chemistry\, Oklahoma State University\nSponsored by the Golden Gate Polymer Forum\n6:30-7:30pm\, Online via Zoom\, Free/$5 donation\, Registration required (Registration deadline: September 21st at 1pm)\n\nAbstract:\nTightly-bound polymer can be described as those polymer segments near a solid surface with which they have a strong attraction. Compared to bulk segments\, they have reduced mobility\, smaller heat capacity\, and broadened-elevated glass transitions. The distance scale for such a polymer interphase in several systems was determined to be around 1 nm. Nevertheless\, they can have a significant effect on the properties of composites. Their small scale makes them difficult to characterize with most techniques normally used in polymer composites. To highlight the effects of these tiny interphases\, we have used large specific surface area substrates (nanoparticles such as silica\, alumina and graphene oxide) with small adsorbed amounts of polymer. Typically\, we have used polymers which hydrogen bond to the substrates. To probe both the dynamics and structure of the interphase we have used FTIR\, deuterium NMR\, calorimetry\, and molecular simulations. We find that this combination of techniques can give us some significant insight into these important interphases. For example\, they may have glass transitions which can be 40 to 100 °C wide! \nSpeaker Background & Research Interests:\n\nFrank D. Blum\, Harrison I. Bartlett Chair and Regents’ Professor of Chemistry at Oklahoma State University has research interests in materials science and surface chemistry. His work has focused on the molecular motion and physical properties of polymers and surface-active agents at interfaces. He has also headed an interdisciplinary group to make polymer composites from used carpets and beverage bottles. Frank is a Fellow of the American Chemical Society and a Fellow of the Division of Polymer Chemistry (POLY)\, Inc. His ACS National service includes: Chair of the Committee on Nominations and Elections and the Divisional Activities Committees. Frank has also served as Councilor from the South Central Missouri Section and Polymer Division of the ACS for 30 years. For POLY\, he served as Assistant Editor of Polymer Preprints\, Secretary\, and in the Chair succession (Chair in 1999). The Division awarded him both a Distinguished Service Award and Special Service Award. He received his BS and MS degrees from Eastern Illinois University in 1976 and 1977\, respectively. He received his Ph.D. in Physical Chemistry from the University of Minnesota in 1981. 
URL:https://www.siliconvalleyacs.org/event/tightly-bound-polymers/
LOCATION:Virtual
CATEGORIES:Dinner Meeting
ATTACH;FMTTYPE=image/jpeg:https://www.siliconvalleyacs.org/wp-content/uploads/2021/09/Golden-Gate-Polymer-Forum.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20221103T180000
DTEND;TZID=America/Los_Angeles:20221103T210000
DTSTAMP:20260611T225528
CREATED:20221001T215004Z
LAST-MODIFIED:20221102T004325Z
UID:19138-1667498400-1667509200@www.siliconvalleyacs.org
SUMMARY:Nematode Pheromone Extracts as Boosters for Controlling Agricultural Pests in the Soil
DESCRIPTION:Date: Thursday\, November 3\, 2022.\nTime: 6pm Social Hour\, 7pm Dinner\, 8pm Seminar\nLocation: Michael’s at Shoreline\, 2960 N. Shoreline Blvd.\, Mountain View\, CA.   Seminar can be viewed online via Zoom.\nCost: $5 “welcome back to an in-person meeting” price\nRegistration: Registration required\nFlyer: View or download\n\nSpeaker:  Fatma Kaplan\, PhD\, CEO Pheronym \nAbstract:  Without pest control\, farmers would lose 30-80% of their crops. Farmers have to control pests to feed the growing world population. Recently\, Europe banned a huge number of pesticides\, leaving farmers in need of eco-friendly pest control solutions. Farmers globally told us that they had limited tools for eco-friendly pest control. This is really close to my heart because my grandparents were farmers. I know how much pest control makes a difference in their harvest. During my postdoc\, I discovered the first sex pheromone from a microscopic roundworm called a nematode. Pheromones are communication signals and have been used successfully to control insect pests above ground in the air. My company\, Pheronym\, is developing pheromones to address the pest control problem.The pheromones we develop are water-soluble and can be used to control pests in the soil. We have two applications. First\, we can use pheromones to influence beneficial nematodes that will feed on insect pests. Second\, we can treat seeds with pheromones that will repel bad nematodes that attack plant roots. Since pheromones are effective at very low concentrations\, our techniques have a very small footprint. Through our pheromones\, we are creating a much-needed eco-friendly solution for farmers across the world. \nShort bio:  Dr. Fatma Kaplan is the co-founder\, CEO of Pheronym and Activate Berkeley Fellow & Berkeley Lab Affiliate Cyclotron Road Cohort 2021. She is an entrepreneur and accomplished scientist with experience in both biology and chemistry. She has a Ph.D. in Plant Molecular and Cellular Biology and postdoctoral training in Natural Product Chemistry with a focus on isolating biologically active compounds. Dr. Kaplan discovered the first sex pheromone of the nematode Caenorhabditis elegans and published in Nature in 2008. Then she discovered that pheromones regulate other behaviors in both parasitic and beneficial nematodes. Dr. Kaplan conducted the first agricultural biocontrol experiment in Space at the International Space Station in 2020. She has very high-impact publications and her dissertation was cited in textbooks within 5 years of publication. Dr. Kaplan worked as a scientist at NASA\, the National Magnetic Field Laboratory and the US Department of Agriculture – Agricultural Research Service. Dr. Kaplan co-founded Pheronym to bring nematode pheromone technology to the market. Dr. Kaplan believes that nematode pheromone technology will provide effective\, non-toxic pest control for farmers and gardeners.
URL:https://www.siliconvalleyacs.org/event/nematode-pheromone-extracts-as-boosters-for-controlling-agricultural-pests-in-the-soil/
LOCATION:Hybrid event – Michael’s at Shoreline\, 2960 N. Shoreline Blvd.\, Mountain View\, CA\, 94043\, United States
CATEGORIES:Dinner Meeting
ATTACH;FMTTYPE=image/jpeg:https://www.siliconvalleyacs.org/wp-content/uploads/2022/10/FKaplan-10-794_495.jpg
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230621T180000
DTEND;TZID=America/Los_Angeles:20230621T190000
DTSTAMP:20260611T225528
CREATED:20230606T052213Z
LAST-MODIFIED:20230606T052737Z
UID:19967-1687370400-1687374000@www.siliconvalleyacs.org
SUMMARY:Light\, Materials and Interfaces: The Complex Dance That Allows CLIP-based 3D Printing
DESCRIPTION:Prof. Joseph DeSimone\, Dept. Chemical Engineering\, Stanford University\nJointly sponsored by Golden Gate Polymer Forum and Silicon Valley ACS\n6-7pm\, Online via Zoom\, Free/$5 Donation\, Registration required (Registration deadline: June 20th at 1pm)\nDownload flyer\n\nAbstract\nContinuous Liquid Interface Production (CLIP) provides an alternate means of creating 3D objects from polymers.  Digital programming and additive manufacturing combine to produce commercial quality parts rapidly and at scale.  CLIP uses oxygen-inhibited photopolymerization to generate a continual liquid interface of uncured resin between a forming part and a printer’s exposure window. This allows parts to ‘grow’ from a pool of resin\, formed by light.  The principle has been demonstrated at Carbon in Redwood City (formerly Carbon3D) on large-scale production of running shoes (Adidas\, Futurecraft 4D)\, customized football helmets (Riddell)\, dentures\, and numerous parts for the automotive\, consumer electronics\, and medicinal markets. Academic research continues at Stanford in multi-material printing\, recyclables\, therapeutic devices in pediatric medicine\, and in the design of higher resolution printing microelectronics and drug/vaccine delivery.  \n \nBio\nProfessor DeSimone’s role at Stanford University spans multiple departments including Chemical Engineering\, Radiology\, Materials Science and Business. Previously\, he was in the chemistry department at the University of North Carolina at Chapel Hill and the chemical engineering department at North Carolina State University. He was also the co-founder\, Board Chair\, and CEO of the additive manufacturing company\, Carbon (formerly Carbon3D). \nDeSimone has published over 350 scientific articles and is on over 200 issued patents.  In addition to 3D printing\, his previous research included environmentally friendly manufacturing processes for the synthesis of fluoropolymer materials and imprint lithography-based nanoparticle manufacturing.  In addition to Carbon3D\, DeSimone co-founded Liquidia Technologies to produce uniform nanoparticles for medicine with independent control over particle parameters such as size\, shape\, composition\, modulus\, and surface chemistry. \nDeSimone received his B.S. in Chemistry from Ursinus College in Collegeville\, PA (1986) and his Ph.D. in Chemistry from Virginia Tech (1990).  He has received numerous recognitions for achievements in science\, engineering\, invention\, and business\, including a National Medal of Technology and Innovation from President Obama in 2016.
URL:https://www.siliconvalleyacs.org/event/light-materials-and-interfaces-the-complex-dance-that-allows-clip-based-3d-printing/
LOCATION:Virtual
CATEGORIES:Dinner Meeting
ATTACH;FMTTYPE=image/jpeg:https://www.siliconvalleyacs.org/wp-content/uploads/2023/05/DeSimoneBanner_21June2023_GGPF-SVACS_Flyer-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20230814T180000
DTEND;TZID=America/Los_Angeles:20230814T210000
DTSTAMP:20260611T225528
CREATED:20230806T215914Z
LAST-MODIFIED:20230806T220036Z
UID:20132-1692036000-1692046800@www.siliconvalleyacs.org
SUMMARY:CACS 2023 Fall Banquet/Keynote at the ACS 2023 Fall National Meeting
DESCRIPTION:Sponsored by Chinese American Chemical Society (CACS)\n6-9pm\, R&G Lounge in San Francisco Chinatown\, 631 Kearny Street\, San Francisco\, $70/person\n10-Course Banquet\, Open to All\, View Event Flyer & Ticket Info\, View Program Details\n\nSchedul \n6:00 – 6:45 pm      Registration and Social Hour \n6:45 – 7:05 pm      Welcome and Introductory Remarks by Dr. Marinda Li Wu\, CACS\, Chair of the Board of Directors;                                                   Past ACS President 2023 CACS Awards Ceremony by Dr. J. Louise Liu\, CACS 2023 President \n7:05 – 8:00 pm     10-Course Dinner Banquet\n8:00 – 9:00 pm     Introduction of Keynote Speakers by Drs. Marinda Li Wu and J. Louise Liu \n#1: Prof. Reuben Jih-Ru Hwu\, “Green Chemical Methods in Organic\nSynthesis Involving New Domino Reactions” (Click Here for Abstract)\n#2: Prof. L.-S. Fan\, “Multiscale Approach for Redox Chemical Looping –\na technology for clean energy future” (Click Here for Abstract) \n9:00 – 9:05 pm   Concluding Remarks by Dr. Marinda Li Wu
URL:https://www.siliconvalleyacs.org/event/cacs-2023-fall-banquet-keynote-at-the-acs-2023-fall-national-meeting/
LOCATION:In-person
CATEGORIES:Dinner Meeting
ATTACH;FMTTYPE=image/jpeg:https://www.siliconvalleyacs.org/wp-content/uploads/2022/11/Chinese-American-Chemical-Society-Northern-California-Chapter.jpg
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