Invention Grant
- Patent Title: Articles and methods for levitating liquids on surfaces, and devices incorporating the same
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Application No.: US16137087Application Date: 2018-09-20
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Publication No.: US11105352B2Publication Date: 2021-08-31
- Inventor: Sushant Anand , Kripa K. Varanasi
- Applicant: Massachusetts Institute of Technology
- Applicant Address: US MA Cambridge
- Assignee: Massachusetts Institute of Technology
- Current Assignee: Massachusetts Institute of Technology
- Current Assignee Address: US MA Cambridge
- Agency: Wolf, Greenfield & Sacks, P.C.
- Main IPC: F15D1/00
- IPC: F15D1/00 ; B01L3/00

Abstract:
Methods described herein provide a way to reduce or eliminate drag and adhesion of a substance flowing over a surface by creating a vapor cushion via evaporation of a phase-changing material of or on the surface or encapsulated within textures of the surface. The vapor cushion causes the flowing substance to be suspended over the surface, greatly reducing friction, drag, and adhesion between the flowing substance and the surface. The temperature of the flowing substance is above the sublimation point and/or melting point of the phase-changing material. The phase-changing material undergoes a phase change (evaporation or sublimation) upon contact with the flowing substance due to local heat transfer from the flowing substance to the material, generating a vapor cushion between the solid or liquid material and the flowing substance.
Public/Granted literature
- US20190226506A1 ARTICLES AND METHODS FOR LEVITATING LIQUIDS ON SURFACES, AND DEVICES INCORPORATING THE SAME Public/Granted day:2019-07-25
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