biologic organism have a nifty magic , where they can grow uniform materials into three dimensional shapes by limit growth in certain sphere . As some cells expand , others do n’t , do the object to warp in three dimensions . Now researchers have apply that same hypothesis to gel canvass , and educate a way of transforming them between monotonic woodworking plane and 3D shapes .
The technique has been nickname halftone gel lithography — the scientists used an ultraviolet sensitive lean polymer tabloid , and exposed it to differing levels of light . The areas exposed would become crosslinked , and not able to expand when placed in piddle . Thus , areas that were illuminated would ride out stationary , and the 1 less so would shift and boom when soaked .
By mimicking printmaking , the investigator used halftone patterns , expose the gel to dot of visible radiation of varying size and shapes . By rigorously controlling these , a number of shapes were able to be developed , including sphere , saddles and cones . Simply soak it , and it attain the contour , and then dry it and it ’ll rejoin to flatbed . The research worker go for this proficiency could help with creating a new type of tissue paper engineering , or an substitute form of 3D printing .
Image : A halftone printing method is used to program the growth of a two-dimensional sheet into a firmament through a pattern based on the Peirce quincuncial mapping projection ( shown in the background ) . Gel image : J. Kim , J.A. Hanna , M. Byun , C.D. Santangelo , R.C. Heyward ; Background Map : NOAA ’s Office of Coast SurveyHistorical Map & Chart Collection .
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