This study describes the performance of stress-minimized platinum (Pt) films supported by thin membranes (200 nm thick) to promote bubble nucleation of water near its theoretical superheat limit. The membrane configurations consist of Pt films deposited on 200 nm thick SiN films over bulk Si, with membranes being formed by etching Si from the back side of the films. Results are compared with mo...

We summarize recent work on the consistent calculation of bubble-nucleation rates. Our approach is based on the notion of a real coarse-grained potential. The bubble-nucleation rate is calculated through an expansion around the semiclassical saddle point associated with tunnelling. We resolve outstanding problems related to the convexity of the potential, the double-counting of the effect of fl...

A process ro pr~w'rice a jami1.v of not'ef materials from po!l.rurbonate, hovrn,e a mrcrocellulur .rrru~-&re, is describ~d. Theprui.css utilizes the highsolubili~y ofrar!.nn dioxide ;in po{r,carhonafe fo ,nucleore a tlery large number of bubbles, on the ordcr of I ro I0 x 10' bhbhles/cm-, or temperatures well brlow the giass tronsirion fen peraftrre o j the original. linsarurared polycxrbonor~....

Quantitative measurements are obtained from high-speed visualizations of pool boiling at atmospheric pressure from smooth and roughened surfaces, using a perfluorinated hydrocarbon (FC-77) as the working fluid. The boiling surfaces are fabricated from aluminum and prepared by mechanical polishing in the case of the smooth surface, and by electrical discharge machining (EDM) in the case of the r...

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The fluctuation determinant which determines the preexponential factor of the transition rate for minimal bubbles is computed for the electroweak theory with sinΘW = 0. As the basic action we use the three-dimensional high-temperature action including, besides temperature dependent masses, the TΦ one-loop contribution whcih makes the phase transition first order. The results show that this term...

A bstract This paper extends classical results by Langer and Kramers [1–3] combines them with modern methods from high-temperature field theory [4–8]. Assuming Langevin dynamics, the end-product is an all-orders description of bubble-nucleation at high temperatures. Specifically, it shown that equilibrium non-equilibrium effects factorize to all orders — nucleation rate splits into a statistica...