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Bioengineering 2017, 4(2), 33; doi:10.3390/bioengineering4020033


School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 58287-6006, USA
Author to whom correspondence should be addressed.
Academic Editors: Ramana Pidaparti and Hu Yang
Received: 23 February 2017 / Revised: 7 April 2017 / Accepted: 9 April 2017 / Published: 12 April 2017
(This article belongs to the Special Issue Advanced Drug Delivery Systems and Devices)
View Full-Text   |   Download PDF [1533 KB, uploaded 12 April 2017]   |  


Pure coconut oil, lanolin, and acetaminophen were vaporized at rates of 1–50 mg/min, using a porous network exhibiting a temperature gradient from 5000 to 5500 K/mm, without incurring noticeable chemical changes due to combustion, oxidation, or other thermally-induced chemical structural changes. The newly coined term “ereptiospiration” is used here to describe this combination of thermal transpiration at high temperature gradients since the process can force the creation of thermal aerosols by rapid heating in a localized zone. Experimental data were generated for these materials using two different supports for metering the materials to the battery powered coil: namely, a stainless steel fiber bundle and a 3-D printed steel cartridge. Heating coconut oil, lanolin, or acetaminophen in a beaker to lower temperatures than those achieved at the surface of the coil showed noticeable and rapid degradation in the samples, while visual and olfactory observations for ereptiospiration showed no noticeable degradation in lanolin and coconut oil while HPLC chromatograms along with visual observation confirm that within the limit of detection, acetaminophen remains chemically unaltered by ereptiospiration. View Full-Text
Keywords: thermal transpiration; Knudsen; Knudsen number; acetaminophen; coconut oil; lanolin; vaporization; rapid vaporization; thermal lability; Kanthal; thermal degradation thermal transpiration; Knudsen; Knudsen number; acetaminophen; coconut oil; lanolin; vaporization; rapid vaporization; thermal lability; Kanthal; thermal degradation

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Woolley, C.; Garcia, A.A.; Santello, M. Ereptiospiration. Bioengineering 2017, 4, 33.

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