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DTSTART;TZID=America/Los_Angeles:20221019T160000
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SUMMARY:Special Physical Chemistry Seminar 228: Vahid Sandoghdar
DESCRIPTION:Vahid Sandoghdar Flyer \nTitle: Ultrasensitive Analysis of Nano-Matter via Scattering: From Single Proteins and Viruses to Sub-Cellular Features \nAbstract: The last two decades have witnessed the insatiable potential of optical techniques for sensitive studies. Optical detection of small nanoparticles and single molecules have often relied on fluorescence\, but limited photophysics and the need for labeling pose severe restrictions for the broad application of this approach. The ubiquitous process of Rayleigh scattering offers a powerful alternative. Although the common intuition might be that detection of individual nanoparticles and single molecules is not within reach via the measurement of their Rayleigh scattering\, interferometric scattering (iSCAT) microscopy introduced in 2004 has demonstrated the contrary. Indeed\, it is\nnow possible to reach a remarkable sensitivity in real-time detection down to single unlabeled proteins as light as 10 kDa. In this presentation\, I will discuss the most recent advances in iSCAT analysis\, including new applications to in nanoparticle sizing and three-dimensional imaging and tracking of sub-cellular structures in live cells.
URL:https://www.chemistry.ucla.edu/events/special-physical-chemistry-seminar-228-vahid-sandoghdar/
LOCATION:Mani L. Bhaumik Centennial Collaboratory\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Physical Chemistry Seminar
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DTSTART;TZID=America/Los_Angeles:20221019T160000
DTEND;TZID=America/Los_Angeles:20221019T171500
DTSTAMP:20260614T044446
CREATED:20220921T053630Z
LAST-MODIFIED:20220922T002254Z
UID:23601-1666195200-1666199700@www.chemistry.ucla.edu
SUMMARY:Jeffrey I. Zink Inorganic Chemistry Seminar 278: Charles H. Wallace
DESCRIPTION:Flyer: Dr. Charles H. Wallace \nTitle: The Role of Chemistry in Advanced Patterning of Semiconductor Devices \nAbstract: The presentation will introduce lithography and advanced patterning to construct transistors and interconnects for semiconductor device manufacturing followed by a discussion of the various inorganic chemicals and materials used in the manufacturing process.  Some of the key topics of discussion will include the scaling of transistors and the role of the minimum resolution of lithography equipment (Rayleigh’s equation).  A summary of historical scaling will be reviewed and a description of future research and development that is required to continue scaling into the future.  The importance of chemistry and impact of chemistry on the manufacturing process and applications will be described.  The introduction of EUV (Extreme Ultraviolet) lithography into the semiconductor patterning process has enabled some simplification of process architecture; however\, has not decreased edge-placement-error (EPE) margin enough to keep up with the pitch scaling requirements.  Chemical selectivity is the most effective way to avoid EPE-caused failures on devices which lead to poor yield.  Area Selective Deposition (ASD) solutions include development of self-assembled monolayers (SAMs) and selective ALD/CVD growth.  Finally\, the talk will conclude with a description of the careers available in the semiconductor device manufacturing industry with an emphasis on research and development at Intel Corporation.
URL:https://www.chemistry.ucla.edu/seminars/jeffrey-i-zink-inorganic-chemistry-seminar-278-charles-h-wallace/
LOCATION:Mol Sci 3440\, 607 Charles E. Young Dr.\, East\, Los Angeles\, CA\, 90095\, United States
CATEGORIES:Inorganic,Seminars
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