ICT Role in 21st Century Education & its Challenges.pptx
Engineering Skills
1. Isaac E. Chao B.S. Materials Science and Engineering [email_address]
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17. Silver Deposition Setup reducing solution pump clamp pipette tip pipette tip waveguide Tygon tubing silvering solution waste
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20. Lower wt% vs. high Property Lower wt% Higher wt% Adhesion √ Smoothness/ Uniformity √ Transmittance √ Thickness √
21. Absorption Spectrum for PS coated sample (2 wt%) Polystyrene absorption peak 6th 5th 4th 3 rd order interference peak
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23. Film thickness Film Thickness can be determined from Absorption Data: Lambda: primary absorption wavelength n: refractive index of material n= 1.57 for polystyrene The thickness of our film was determined to be 1.53 micrometers
33. Optical Microscopy of Sample The optical microscopy images produced no blemishes of significance. The ones seen on this slide are attributed to dust on the sample (and/or lens).
34. Scanning Electron Microscopy (SEM) The SEM produced an image which shows small blemishes on the surface of the PZT thin-film. These could be attributed to damage to the PZT during handling, but could possibly represent imperfections on the sputtered surface on a scale of 10^(-6) meters.
37. Atomic Force Microscopy of the Sample AFM shows that surface deflection remains at the nano scale (10^-9), which is insignificant compared to the thickness of the layer (10^-6).
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