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Full-Text Articles in Mechanical Engineering
Thermoelectric Module-Variable Conductance Heat Pipe Assemblies For Reduced Power Temperature Control, Corey Melnick, Marc Hodes, Gennady Ziskind, Martin Cleary, Vincent Manno
Thermoelectric Module-Variable Conductance Heat Pipe Assemblies For Reduced Power Temperature Control, Corey Melnick, Marc Hodes, Gennady Ziskind, Martin Cleary, Vincent Manno
Vincent P. Manno
Thermoelectric modules (TEMs) are used to precisely maintain the setpoint temperature of photonic components generating variable heat loads under varying ambient conditions. The non-component side of TEMs is mounted onto conventional heat sinks (CHSs). At any combination of setpoint temperature, heat load and ambient temperature, there is a unique thermal resistance between the non-component side of a TEM and the ambient corresponding to minimal TEM power consumption. Indeed, a zero thermal resistance heat sink minimizes power consumption when a TEM operates in refrigeration mode, but when it operates in heating mode a relatively high thermal resistance one is optimal. This …
Simulated Effects Of Measurement Noise On Contact Measurements Between Rough And Smooth Surfaces, Caprice Gray, Robert White, Vincent Manno, Chris Rogers
Simulated Effects Of Measurement Noise On Contact Measurements Between Rough And Smooth Surfaces, Caprice Gray, Robert White, Vincent Manno, Chris Rogers
Vincent P. Manno
To test the accuracy of optically measuring contact, we examined the height distribution histogram of a simulated rough surface contacting a smooth surface. We qualified the technique sensitivity as a function of the inverse signal-to-noise ratio having values ranging from 0 to 0.3. An explanation of how the analysis technique can be applied to Dual Emission Laser-Induced Fluorescence (DELIF) measurements is provided.
Modeling Of Dual Emission Laser Induced Fluorescence For Slurry Thickness Measurements In Chemical Mechanical Polishing, Caprice Gray, Chris Rogers, Vincent Manno, Robert White
Modeling Of Dual Emission Laser Induced Fluorescence For Slurry Thickness Measurements In Chemical Mechanical Polishing, Caprice Gray, Chris Rogers, Vincent Manno, Robert White
Vincent P. Manno
Dual emission laser induced fluorescence (DELIF) is a technique for measuring the instantaneous thin fluid film thickness in dynamic systems. Two fluorophores within the system produce laser induced emissions that are filtered and captured by two cameras. The ratio of the images from these cameras is used to cancel the effect of the laser beam profile on the image intensity. The resultant intensity ratio can be calibrated to a fluid film thickness. The utilization of a 2-dye system when applied to Chemical Mechanical Polishing (CMP) is complicated by the fluorescence of the polymeric polishing pad and the light scattering particles …