# Key Points from IRC Log - June 20, 2009

- A low-cost spin coater design was discussed, based on brushless DC motors from hard disk drives, capable of speeds from 0-10,000 rpm and useful for creating uniform thin films for organic electronic devices at approximately $70.

- DIY maskless lithography techniques using DLP projectors were mentioned, with a note about challenges in achieving uniform illumination (currently only 95% usable image area after brightness adjustment).

- A full-body tracking system for gesture recognition was shared via a link to a Technical University of Munich student project, described as an "IRL ironman worktable."

- Discussion of reactive ion etching (RIE) chambers included sharing patent schematics and a paper on "Microwave-induced plasma reactor based on a domestic microwave oven for bulk solid state chemistry."

- Technical questions about photoresists were raised, specifically regarding UV-cured crosslinked polymers and their porosity/outgassing properties compared to other materials like latex.

- The conversation included technical discussion of circuit analysis methods, including Kirchhoff's voltage law, nodal analysis, and graph-based approaches for extracting state equations from component packages.

- Several academic resources were inaccessible during the conversation, with participants noting that ScienceDirect had been down all day, hampering research efforts.