present a simple plasmonic lens composed of an annular slit and a single concentric groove
. The subwavelength groove can scatter the SPPs and constructively interfere to get a far-field focal spot.
This method uses two tools: a side cutting end mill with peripheral grooves, which cuts a series of concentric grooves
in the bore wall through interpolation, and a second rotary tool which deforms the grooves to produce an undercut.
Flanges on the flexible liner are pressed to the side of the body block by concentric grooves
on the bracket assembly and the cover plate, isolating the fluid to the channel.
The special advantages of the C Grove putter, he explains, are the concentric grooves
on the face of the putter which helps the ball roll smoothly off the face, as opposed to it jumping and skidding.
* "Record grooves" (or ripples or wave marks) are concentric grooves
or lines, usually at the leading edge of flow.
The hot plate style consists of a metal plate (usually aluminum) with or without concentric grooves
where the temperature of the plate is set and controlled using either an inexpensive potentiometer dial or a high-end temperature controller.
NBMG 11015/1 Massive RG,CG NBMG 11015/2 Massive RG NBMG 11016/1 Laminate CG (?), approximate value; RG, radial grooves; CG, concentric grooves
; CR, concentric ridges; n.o., not observed
Like Mirro's existing Concentric Air line of conventional aluminum cookware, bottoms of pieces have concentric grooves
that control heat distribution, the company said.
A pattern of concentric grooves
-- each 1 micrometer wide and about 0.35 micrometer deep -- cut into the laser's top surface focuses the light to a spot 8 micrometers wide.
During their manufacture, concentric grooves
are stamped on the recording surface about 20 microns apart.
Crafted simply from a single block of wood on a turner's lathe, their only decoration, if they had any at all, was restricted to concentric grooves
on the base, or cup, although well-figured wood ensured their beauty.