Suspended micro-and nanoscale polymer fibers were created using a new and novel technique which is performed at room temperature. This method involves drawing solvated PMMA into liquid filaments, which thin, via surface tension, as the solvent evaporates, subsequently yielding a solid fiber. The PMMA solution was drawn by two separate techniques: 1) using a stylus to extrude a solution filament between two pre-deposited pools, and 2) using a pressurized capillary loaded with solution to directly deposit filaments of solution on the substrate in a “connect-the-dots” style. Also, because both the stylus and pressurized capillary were controlled with an ultra-high precision instrument, the fibers can be precisely positioned in three dimensions. The diameters of these fibers were controlled, within the range of 450 nm to 100 µm, by varying the molecular weight of the polymer or the concentration of the PMMA solution. It was discovered that increasing either or both of these variables led to an increase in fiber diameter. Also, the effect of stylus material on fiber diameter variance was examined, with a Parylene®-coated stylus yielding the lowest overall variance. These fibers were coated with glass and Parylene® and dissolved to produce hollow microchannels suitable for electroosmotic flow. Electroosmotic channels with diameters ranging from 4 µm to 100 µm were successfully fabricated and tested.
|Title of host publication||2006 Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2006|
|Editors||Leland Spangler, Thomas W. Kenny|
|Number of pages||4|
|ISBN (Electronic)||0964002469, 9780964002463|
|State||Published - 2006|
|Event||13th Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2006 - Hilton Head Island, United States|
Duration: Jun 4 2006 → Jun 8 2006
|Name||Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop|
|Conference||13th Solid-State Sensors, Actuators, and Microsystems Workshop, Hilton Head 2006|
|City||Hilton Head Island|
|Period||6/4/06 → 6/8/06|
Bibliographical noteFunding Information:
This work was supported by NSF grant ECS0506941, NASA Cooperative Agreement NCC5-571, NSF EPSCoR grant 6016955, DOE EPSCoR grant 46411101095, and the Commonwealth of Kentucky.
© 2006 TRF.
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
- Hardware and Architecture