Student Project Abstracts 2005 - Pluto - University of Washington

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HYDROGEL MATERIALS FOR TWO-PHOTON MICROFABRICATIONSolution Ethylene glycol dimethacrylate 1-vinyl-2-pyrrolidinone 2-Hydroxyethyl methacrylateA 1 1 1B 2 1 1C 1 2 1D 1 1 2Table 1.1. Hydrogel CompositionsRESULTSIt was found that setup 1 allowed the UV light to penetratethe resin-substrate interface in order to yield sufficient crosslinking.Sample A with a 1:1:1 ratio of EGMA, VP, and HEMA, andC with a 1:2:1 ratio of EGMA, VP, and HEMA gave the mostcrosslinking in the least amount of time. Composition C crosslinkedin 3 minutes, whereas composition A required 7 minutes,and compositions B and D could not be crosslinked. This wasdetermined by observing how much of the sample became solidafter UV exposure. Only the part of the sample behind the openingin the mask should crosslink. Samples that did not yield sufficientcrosslinking remained in the liquid state after UV exposure.Composition C was also used in the UV mask experimentsdue to its ability to yield higher crosslinking than compositionA. Table 1.2 contains data on swelling ratios in the bulk materialafter exposure to UV light at various times. The diameter and thethickness of the samples were measured before and after swellingin water overnight. Setup 1 was used with composition C,with exposure times of 5, 10, 15, 20, and 25 minutes. The resultsindicate that the bulk materials of composition C swell 4-5 timesits original size. Most of the swelling was observed to be in thevertical direction. Setup 2, which includes a mask, was used withcomposition C for 3 minutes. Picture 1.1 shows an example ofstructures obtained by photo-patterning of composition C througha mask. The width of the features was measured before and afterswelling in water overnight. No change in width was observed(see Table1.3).Setup 1Setup 2Diagram 1.1. Experimental Setups for UV Experiments124 CMDITR Review of Undergraduate Research Vol. 2 No. 1 Summer 2005
UDOETUKExposure Time(minutes)Diameter (dry)(inches)Thickness (dry)(inches)Diameter (wet)(inches)Thickness (wet)(inches)Volume Ratios(wet/dry)Thickness Ratios(wet/dry)5 0.350 0.030 0.358 0.136 3.7 3.510 0.340 0.026 0.360 0.138 5.0 4.315 0.349 0.032 0.365 0.135 3.6 3.220 0.344 0.027 0.361 0.135 4.5 4.025 0.343 0.028 0.365 0.131 4.3 3.7Table 1.2. Results for bulk materialsPicture 1.1 Optical images of structure obtained by UV illumination of resin C through a maskCondition Width (1) Width (2) Width (3) AverageDry 0.34 0.35 0.36 0.35Wet 0.36 0.34 0.33 0.34%Change 5.8% -2.9% -8.3%Table 1.3. Results from UV Mask (widths are in arbitrary units).Widths (1), (2), and (3) refer to the lines on the wet and dry images. They represent the width before and after swelling the samples with water.Picture 1.2. (left) SEM Image of Stack of Log Microstructure Obtained by two-photon microfabrication in resin C. (right) Dye #41.CMDITR Review of Undergraduate Research Vol. 2 No. 1 Summer 2005 125
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The material is based upon work sup
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TABLE OF CONTENTSSynthesis of Dendr
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6 CMDITR Review of Undergraduate Re
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SYNTHESIS OF DENDRIMER BUILDING BLO
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throughout the work period. Five su
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12 CMDITR Review of Undergraduate R
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BARIUM TITANATE DOPED SOL-GEL FOR E
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BARIUM TITANATE DOPED SOL-GEL FOR E
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SYNTHESIS OF NORBORNENE MONOMER OF
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using different reaction conditions
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Synthesis of Nonlinear Optical-Acti
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quality of the XRD structures wasca
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Behavioral Properties of Colloidal
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Transmission electron microscopy ha
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areorient themselves with the elect
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Fabry-Perot modulators with electro
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QUANTIZED HAMILTON DYNAMICS APPLIED
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INVESTIGATING NEW CLADDING AND CORE
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Dr. Robert NorwoodChris DeRoseAmir
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SYNTHESIS OF TPD-BASED COMPOUNDS FO
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SYNTHESIS OF TPD-BASED COMPOUNDS FO
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OPTIMIZING HYBRID WAVEGUIDESpropaga
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At closer spaces the second undesir
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SYNTHESIS AND ANALYSIS OF THIOL-STA
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QUINOXALINE-CONTAINING POLYFLUORENE
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QUINOXALINE-CONTAINING POLYFLUORENE
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SYNTHESIS OF DENDRON-FUNCTIONALIZED
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BUILDING AN OPTICAL OXIMETER TO MEA
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Page 78 and 79: TOWARD MOLECULAR RESOLUTION C-AFM W
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Page 82 and 83: SYNTHESIS AND CHARACTERIZATION OF E
Page 84 and 85: My name is Aaron Montgomery and I a
Page 86 and 87: 1,1-DIPHENYL-2,3,4,5-TETRAKIS(9,9-D
Page 88 and 89: 1,1-DIPHENYL-2,3,4,5-TETRAKIS(9,9-D
Page 90 and 91: EFFECTS OF SURFACE CHEMISTRY ON CAD
Page 92 and 93: EFFECTS OF SURFACE CHEMISTRY ON CAD
Page 96 and 97: SYNTHESIS OF A POLYENE EO CHROMOPHO
Page 98 and 99: SYNTHESIS OF A POLYENE EO CHROMOPHO
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Page 104 and 105: CHARACTERIZATION OF THE MOLECULAR P
Page 108 and 109: OPTIMIZATION OF SEMICONDUCTOR NANOP
Page 110 and 111: OPTIMIZATION OF SEMICONDUCTOR NANOP
Page 112 and 113: CHARACTERIZATION OF THE PHOTODECOMP
Page 116 and 117: ELECTROLUMINESCENT PROPERTIES OF OR
Page 120 and 121: DETERMINATION OF MOLECULAR ORIENTAT
Page 122 and 123: DETERMINATION OF MOLECULAR ORIENTAT
Page 126 and 127: HYDROGEL MATERIALS FOR TWO-PHOTON M
Page 128 and 129: THE DESIGN OF A FLUID DELIVERY SYST
Page 130: THE DESIGN OF A FLUID DELIVERY SYST
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Student Project Abstracts 2005 - Pluto - University of Washington

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