Site designed & developed by Omnipress.
A single link to the first track to allow the export script to build the search page
Plenary
Plenary
OP: Opening Plenary
Monday October 19 12:00 PM - Monday October 19 2:00 PM
Biophotonics Success and Future: Where Have We Been and Where Do We Go Next (OP001)
Monday October 19 12:20 PM - Monday October 19 12:55 PM
- Ty Olmstead, Ocean Insight
As we look back and to the future, what is next for biophotonics in medicine? Transformation of aphakic IOLs? COVID-19 detection? Drug fabrication? Regenerative medicine? The potential of biophotonics continues to solve many challenging problems in medicine. This talk will address these and other relevant topics to biophotonics.
Quality Assurance in Laser-Based, Metal Additive Manufacturing: Generation and Detection of Systematics and Stochastic Defects (OP002)
Monday October 19 12:55 PM - Monday October 19 1:35 PM
- Abdalla R. Nassar, Penn State University ;
- David J. Corbin, Penn State University ;
- Edward Reutzel $lastName ;
- Brett Diehl $lastName ;
- Christopher B. Stutzman, Penn State University ;
- Andrew Przyienmski $lastName
Building Science and Theory for Smart Laser Manufacturing (OP003)
Monday October 19 1:35 PM - Monday October 19 2:15 PM
- Kenichi L Ishikawa, The University of Tokyo
Understanding laser processing belong to multiscale and multidisciplinary cutting-edge science. For example, how atoms, molecules, and materials behave under intense laser irradiation is at the forefront of atomic, molecular, optical, and condensed-matter physics, involving highly nonlinear, dynamical processes. One of our focuses is to understand and simulate such strong laser matter interaction by combining different techniques, even starting from the first principles of quantum mechanics.
We are developing various new methods to accurately calculate the laser-driven electron dynamics and energy transfer from laser to electrons. Also, combining first-principles and molecular dynamics calculations, we start to quantitatively reproduce how atoms are ejected from a laser-irradiated surface. In the macroscopic scale, for instance, we study multiphysics modeling of complex thermal multiphase flows with phase change. We build a nation-wide collaboration network of theoreticians as well as experimentalists that develop, e.g., cutting-edge operando measurement techniques such as high-speed photography and angle-resolved photoemission spectroscopy.
CP: Closing Plenary
Tuesday October 20 7:15 PM - Tuesday October 20 9:00 PM
Metallic Additive Manufacturing: Past Present and Future (CP001)
Tuesday October 20 7:20 PM - Tuesday October 20 7:55 PM
- Jyoti Mazumder, Managing Partner: SensigmaLLC
Economist Magazine hailed Additive manufacturing (AM) as “Third Industrial Revolution”. AM also features prominently in Factory 4.0. It has been practiced in one form or other for more than 5000 years. A pyramid in Egypt was built at 2800 BC using layer-by-layer construction. Modern versions for this technology are around for almost three decades. The first patent on steriolithography was issued in 1986 to Charles Hull. In many ways it is “back to the future”
Presently, there are several 3-D printing machine manufacturers using wide range of raw materials from wax to metals using various techniques. They are also making products from food to fashion. Even AM machine capable of remote manufacturing is now possible.
However one of the critical needs is “Certify as you build”. Due to relatively low volume production, conventional statistical quality control is difficult. In-situ diagnostics and quality assurance is needed and that is relatively unexplored field. In-situ optical diagnostics and its capability to integrate with the process control is a prudent alternative. New optical Sensors are being developed to control product health and geometry using imaging, cooling rate by monitoring temperature, microstructure and composition using optical spectra. Ultimately these sensors will enable one to “Certify as you Build”. Recently the author and his group have developed a technique to analyze the plasma spectra to predict the solid-state phase transformation, which opens up the new horizon for the materials processing and manufacturing.
Mathematical model developed for the process includes most of the physics but need substantial computing time. An effort needs to be made to develop surrogate models, which can converge within 10ms to enable the process control. Flexibility of the process is enormous and essentially it is an enabling technology to materialize many a design. Conceptually one can seat in Santa Fe and fabricate in Sheffield. This paper provides an overview of the past history, present status and future needs and potential.
Using Laser-Based Analysis Techniques on Mars With the ChemCam and SuperCam Instruments (CP002)
Tuesday October 20 7:55 PM - Tuesday October 20 8:30 PM
- Nina L. Lanza, Los Alamos National Lab