Tung H.-Y.Sun T.-P.Sun H.-Y.Guan Z.-Y.Hu S.-K.Chao L.HSIEN-YEH CHEN2019-05-222019-05-22201723529407https://scholars.lib.ntu.edu.tw/handle/123456789/409838Three-dimensional porous structures are constructed via vapor deposition onto a sublimating solid template. Construction upon deposition of vapor-phase material occurs at a dynamic vapor¡Vsolid interface and is directed by the solid surface vanishing by sublimation. A proof-of-concept demonstration showed vapor depositions of poly-para-xylylenes (PPXs) on sublimating templates, including ice and mixtures with ethanol and hexane. The material construction macroscopically produces a replica architecture of the parent template. Characteristics of the pore structures are formed during the construction process as a result of the gas vapor and the space that is vacated by sublimation, thus enabling control of the porosity through regulation of the sublimation speed and/or the thermodynamic properties of the templates. The technology introduced herein provides a novel approach for 3D porous material manufacturing and overturns the notion that vapor deposition necessarily forms dense thin films on substrates. ? 2017 Elsevier Ltd3DMaterial fabricationPorous structureSublimationVapor deposition[SDGs]SDG3[SDGs]SDG9journal article10.1016/j.apmt.2016.12.0052-s2.0-85014279804https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014279804&doi=10.1016%2fj.apmt.2016.12.005&partnerID=40&md5=71466e97eaed69a590ffb54a9f1b3aa8