thin film growth and applications “the art of laying apples” david mortimer physics teacher san...
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Thin film growth and Applications
“The Art of Laying Apples”
David Mortimer
Physics Teacher
San Felipe Del Rio CISD
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Dr. Haiyan Wang • Education and appointments:• B.S. and M.S. in Materials Science and
Engineering in China• Ph.D. in Materials Science and
Engineering, 2002, North Carolina State University (Raleigh, NC)
• Postdoc (03-04) and Staff Member (05) at Los Alamos National Laboratory
• Assistant Professor in Electrical and Computer Engineering (Jan. 2006)
• Staff Member at Los Alamos National Lab (summer 2006)
Assistant Professor
Electrical and Computer Engineering
Texas A&M University
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Dr. Haiyan Wang • Honors
• ONR Young Investigator Program Award, ONR-YIP 2008.
• Air Force Young Investigator Research Program Award, AFOSR-YIP, 2007.
• Air Force Summer Faculty Fellowship, AFOSR, 2007 and 2008.
• TMS Young Leader representing the Electronic, Magnetic and Photonic Materials Division. (Minerals, Metals and Materials Society, TMS 2005)
• Lab Director Funded Postdoctoral Fellow, Los Alamos National Laboratory (2002-2004).
• Materials Research Society Graduate Student Award ( Fall 01, Boston)
• Patents 8 patents in the areas of thin film architecture and high temperature superconductors
• Selected journal publications (105 journal articles and 70 conference proceedings and presentations by January 2008)
Assistant Professor
Electrical and Computer Engineering
Texas A&M University
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Our GroupDr. Wang, Crystal Woods, David Mortimer
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Research areas
1. Nanostructured nitride and oxide thin film heterostructures for microelectronics, optoelectronics, magnetic and structural applications
2. Coated superconductor materials scale-up and architectures; Flux-pinning mechanisms of nanoparticles and defects in high temperature superconductors
3. Microstructural characterizations with transmission electron microscopy(TEM), high resolution TEM, Scanning transmission electron microscopy
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04/18/23
Roy Araujo : Functional Nitride Thin FilmsPeru
Joon Hwan Lee Optical , transparency, transmittanceSouth Korea
Ick Chan Kim Prop. Of film through thickness change South Korea
Zhenxing Bi Deposition PatternsChina
Jong Sik Yoon Functional Oxide Thin Films South Korea
Jie (Joyce) Wang High Temperature Super Conductor
Harrison Tsai same as Joyce
Sunmee Cho, South Korea
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The GoalExploit Physical Properties
To find the optimal parameters which will allow for the growth/adhesion onto different substrates to meet industrial needs on a scale of nanometers or atomic scale in an economical and environmentally safe process. A similar, but somewhat different concept would be to change the atomic structure of some materials to meet a specific industrial need.
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What can Thin Films and Coatings do for us?
Thin Film is a thin layer of coating on a substrate or template. It serves one or multiple physical purposes including protection, decoration, conducting, reflection, data storage, insulation, etc.
Examples• Colorful coatings on cars, golden watches • Corrosion resistive coatings and super hard coatings
(petroleum industry, chemical factories, etc.)• Semiconductor industry (Pentium processors,
microchips, memories, iPod, etc.).
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Real World Examples of Thin film growth (On a larger than nanometer scale)
• Dust on a car
• Fog on a window
• Snowfall
• Fertilizing a yard These would actually be called thick film because their
size is greater than one micrometer.
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Problems with the application of the previous examples
• Dust on a car
• Fog on a window
• Snowfall
• Fertilizer
• It Rains or someone writes “Wash Me”
• Inconsistent surface or it begins to form water droplets and drip
• Air pollution as it falls contaminates or it doesn’t stick
• Inconsistent application
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How big is a nanometer?
• A nanometer is a unit of measure. Just like inches, feet and miles. By definition a nanometer is one-billionth of a meter. A meter is about 39 inches long. A billion is a thousand times bigger than a million, as a number you write it out as
1,000,000,000.
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What is a nanometer website
• http://www.cellsalive.com/howbig.htm
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Tentative plan for your summer research
• Session 1-2: presentations on our lab research, thin film introduction, simple growth model, and vacuum science (given by Dr. Wang)
• Session 3-7: lab work on assembling a simple vacuum system for thin film deposition (assisted by graduate students, Jongsik Yoon, Zhenxing Bi and Ickchan Kim)
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Tentative plan for your summer research, cont.
• Session 8-11: thin film deposition using pulsed laser deposition and the simple vacuum system built, thin film property measurement (electrical and mechanical measurements, assisted by graduate students, Jongsik Yoon, Ickchan Kim and Roy Araujo)
• Session 12-15: building a simple teaching model to illustrate thin film growth structure (ball models, with help from graduate students) and prepare for final report
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So, what cha been doing?
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Hitachi U-4100 Spectrophotometer
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Working with the Spectrophotometer
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Sample preparation for TEMS
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Diamond Saw
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Polisher/grinder
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Sample prep
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Sample prep
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Optical Microscope
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Dimpler Machine 80 micron-20
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Ion miller to make the hole
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This is what we were trying to accomplish.
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TEM Imaging
1-2 nm high resolution
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Transmission Electron Microscope
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What cha gonna be doing?
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Pulsed Laser Deposition System
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High temperature annealing/for better crystal structuring
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Vacuum chamber
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Control box for vacuum pumps for the PLD
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Pulsed Laser Deposition system
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What am I going to do with this?
• Make and try to stack crystal structures.
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What am I going to do with this?
• Test properties of materials.
• Work with Gas laws to discuss what is going on in the vacuum chamber.
• Kinetic Theory
• Much, much, more!!!!!!!!
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Acknowledgements
04/18/23 Free template from www.brainybetty.com