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Flat Panel and LCD Screens, Part 2

Figure 1: Unpowered Sony Ericsson S500i LCD screen at 200x magnification In our last blog post, I wrote about some of the physics and materials science principles that go into the design and manufacture of liquid-crystal display (LCD) screens.  The eponymous liquid crystals (LCs) in such a display have to be quite small [...]

By | 2016-12-15T22:24:50+00:00 June 24th, 2016|Materials Science, Semiconductor|0 Comments

Layered Composite Heaters for Semiconductor Processing

Figure 1: Composite layered heater from patent US 9,224,626 Figure 1: Composite layered heater from patent  US 9,224,626 B2 Our eponymous Dr. Glew, P.E. recently contributed to a new patent on an advanced thin-film electric heater, titled “Composite substrate for layered heaters”.  Watlow Electric, based in St. Louis, hired Glew Engineering and Dr. Glew [...]

Thermal Expansion in a Glass and Aluminum Window: Part 2

Figure 1: Simplified model of an aluminum-glass window In last week’s last blog, we explored the causes and effects of thermal expansion in solid materials.  The expansion and contraction of a material based with temperature must be considered in mechanical engineering design projects, since it can impose high and potentially-damaging internal stresses.  We used a simplified aluminum-framed window to demonstrate [...]

Thermal Expansion in a Glass and Aluminum Window: Part 1

Figure 1: Cracked Glass By Andrew Chan [FreeImages.com Content License] Thermal expansion of dissimilar materials is a challenge in designing equipment and structures that are subject to large temperature changes.  This is often called "CTE mismatch." CTE is the acronym for coefficient of thermal expansion.  In this blog, we give the fundamentals of thermal expansion calculations used in thermo-mechanical analysis. [...]

Italian Masters: Galileo’s Stellar Science and Engineering

Portrait of Galileo Galilei Justus Sustermans [Public domain], via Wikimedia Commons I’d like to return to our previous series on the Italian Masters, focused not on the usual masters or painting and sculpture but on the masters or science, mathematics, and engineering.  So far in the series I’ve written about the accomplishments of Volta, Cassini, [...]

By | 2016-12-15T22:24:54+00:00 March 10th, 2016|Materials Science, Mechanical Engineering|0 Comments

Italian Masters: Volta Jump-Starts Electrical Engineering

Figure 1: Allesandro Volta We’ve been taking a break from hard-hitting mechanical engineering and materials science blogs with some pieces on the Italian masters of science, mathematics and engineering in the 16-19th centuries.  I’ve previously explored the lives and contributions of Evangelista Torricelli, Giovanni Venturi and Giovanni Cassini.  For this blog, I’m focusing on Alessandro Volta, who helped revolutionize [...]

By | 2016-12-15T22:24:54+00:00 February 25th, 2016|Electrical Engineering, Materials Science|0 Comments

12 Years a Martian: Mechanical Engineering on the Red Planet

Figure 1: Mars Exploration Rover mobility testing By NASA [Public domain], via Wikimedia Commons I’ve been writing a short blog series celebrating Mars Exploration Rover B (MER-B) Opportunity’s 12th anniversary of its landing on Mars.  Opportunity has exceeded its original three-month design lifetime by 48 times, and is still operating every day.  In previously entries [...]

By | 2016-12-15T22:24:55+00:00 February 22nd, 2016|Materials Science, Mechanical Engineering|0 Comments

12 Years a Martian: Materials Science on the Red Planet

Figure 1: Diagram of the scientific equipment on MER-B Opportunity Mars Exploration Rover Launches Press Kit, June 2003, p. 41 [i] I mentioned in a blog last week that Mars Exploration Rover B (FIgure 1), more affectionately called Opportunity, recently celebrated the 12th anniversary (in Earth years) of its landing on Mars.  12 years without maintenance on [...]

By | 2016-12-15T22:24:55+00:00 February 11th, 2016|Materials Science, Mechanical Engineering|0 Comments

12 Years a Martian: Engineering Challenges on the Red Planet

Figure 1: Mars Exploration Rover By NASA/JPL/Cornell University, Maas Digital LLC [Public domain], via Wikimedia Commons Depending on which Facebook pages or Twitter feeds you follow, some of you may have caught wind that Opportunity (Mars Exploration Rover B, Figure 1) recently passed its twelfth anniversary of its landing on the red planet.  Opportunity’s ongoing [...]