Fabrication method for inductive mesh film on spherical substrates
by Xiaoguo Feng
International Journal of Nanotechnology (IJNT), Vol. 12, No. 10/11/12, 2015

Abstract: To fabricate an inductive mesh film with a micron grade line width on a concave spherical substrate, we put forward a laser direct writing method of concentric optical scan, and it means that the intersecting point of three kinematic axes and an optical axis is the curvature centre of concavity. The specific scanning way is separated into four steps. Firstly, a concave spherical substrate of coating photoresist is installed erectly on a horizontal shafting, and a laser beam is focused on the edge of photoresist surface. Afterward, the substrate and horizontal shafting rotate as a whole with the rotary of an erect shafting, a line is written on the photoresist surface while a rotation period is accomplished. Then, the laser beam is turned an angle at the pitching direction, and the substrate is rotated again a cycle, so another line is written. Repeating this way, we get a set of latitude lines. Finally, the substrate makes a quarter turn around the horizontal axis, and repeating preceding processes, we get a mesh figure of intersecting latitude lines. In the experiment part, we fabricate an inductive mesh film with a period 600 μm and a line width 7 μm on a concave spherical substrate.

Online publication date: Fri, 18-Sep-2015

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