Lesker U Live ist eine Reihe von kostenlosen Webinaren zu vielen Themen, die von führenden Vakuumexperten gelehrt werden. Bitte beachten Sie, daß die Webinare in englischer Sprache durchgeführt werden.
Lesker U provides the following:
- High-value vacuum expert training
- A solid base of understanding surrounding vacuum technology
- Deep dives on specific vacuum technology topics
All Lesker U Live! Webinars
Detecting Leaks in Vacuum Systems
Leaks are the bane of vacuum systems. Leaks are one of the principal causes that inhibit the achievement of optimal base pressures. There are several approaches available to detect leaks of various sizes which do not involve expensive leak detection tools. In this course the methods to quantify leaks and a general approach to detection will be presented. In addition, specific techniques to detect leaks in rough, medium, high and ultra-high vacuum will be detailed. The use of helium-based leak detectors as well as the use of residual gas analysis for finding very small leaks will also be highlighted.
Duration: 1 Hour(s)
Expert(s): J.R. Gaines
J.R. Gaines is the Technical Director of Education for the Kurt J. Lesker Company, (Jefferson Hills, PA). The Lesker Company is a global scientific equipment manufacturer supplying materials and tools for vacuum-enabled innovation. Gaines has more than 40 years of experience in the research, development and commercialization of advanced materials technologies including superconductivity, semiconductors, cryogenics, space simulation, energy generation, energy conversion and storage. His experience includes vacuum systems, thin film deposition, inorganic chemistry, nanotechnology, and advanced ceramic processing.
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REGISTERDry Vacuum Pumps for Reduced Contamination & the Oil-Free Production of Vacuum
Oil contamination introduces an unwanted variable in vacuum processes which can ruin research results and create the need for an extensive cleaning of a vacuum system. Contamination resulting from backstreamed vapors from oil-sealed vacuum pumps is increasingly an issue that must be mitigated to produce pristine vacuum environments. Removal of oil contamination may require complete disassembly and other heroic measures to renew all vacuum-facing surfaces and return a system to pristine condition. A range of oil-free vacuum pumps have been developed for rough, high, and ultra-high vacuum. These pumps, including dry scroll, screw and roots pumps, for rough vacuum, as well as turbomolecular, cryopump, and various solid-state getters, for high and ultra-high vacuum, provide extremely clean routes for the production of vacuum. In this brief introduction, the specific pumping mechanisms, advantages, and drawbacks, of various dry pumping technologies will be discussed and a few example applications will be featured.
Duration: 1 Hour(s)
Expert(s): Evan Sawyer
Evan Sawyer is the Global Product Manager for Instrumentation and Pressure Measurement at the Kurt J Lesker Company. With a background in Chemistry, Evan is one of KJLC's product experts and specializes in chemical compatibility / reactivity, pressure measurement, pressure control, and gas analysis. Evan's talents have enabled him to contribute to many different system designs and upgrades for his global clientele. His skills also include troubleshooting instrumentation issues and the creation of technical documentation for his products to further assist the scientific community.
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REGISTERQuartz Crystal Microbalance (QCM) for Thin Film Deposition Process Monitoring
Quartz Crystal Microbalances (QCM) are devices that can monitor and control the deposition rate of evaporation, sputtering, and other thin film deposition processes in real time. QCM’s are highly precise mass balances that can measure increases in weight on a scale necessary to determine the rate at which atoms or molecules are adsorbed onto a substrate as a thin film grows. They can have an accuracy on the nanogram or microgram scale. This means they can resolve film thickness on the scale of tens of nanometers up to several microns. The QCM is made up of several components including an electroded quartz crystal, a temperature-controlled crystal holder, an oscillator and a controller which reads changes in oscillation, and stores process parameters. In this lecture, we will highlight each of these components, compare some of the more common options, and describe how these components work together for precise thin film deposition monitoring and control.
Duration: 1 Hour(s)
Expert(s): Evan Sawyer
Evan Sawyer is the Global Product Manager for Instrumentation and Pressure Measurement at the Kurt J Lesker Company. With a background in Chemistry, Evan is one of KJLC's product experts and specializes in chemical compatibility / reactivity, pressure measurement, pressure control, and gas analysis. Evan's talents have enabled him to contribute to many different system designs and upgrades for his global clientele. His skills also include troubleshooting instrumentation issues and the creation of technical documentation for his products to further assist the scientific community.
Date:
REGISTER
