Abstract: A nanoimprint lithography mold, nanoimprint lithography tiling system, and method of dicing a nanoimprint lithography substrate employ a nanoimprint lithography mold having a precision edge and an undercut sidewall. The precision edge has nanoscale roughness and is adjacent to a top surface of the nanoimprint lithography mold at a predetermined distance from a feature of the nanoimprint lithography mold. The undercut sidewall extends from the precision edge to a bottom surface of the nanoimprint lithography mold. The undercut sidewall has a surface that is angled away from the precision edge and toward a center of the nanoimprint lithography mold. The precision edge and the undercut sidewall define a side of the nanoimprint lithography mold that can be abutted with corresponding sides of one or more other nanoimprint lithography molds.

Abstract: A method of imprint lithography mold defect mitigation and a masked imprint lithography mold employ a masking layer to selectively cover a surface defect. The method of imprint lithography mold defect mitigation includes depositing a masking layer on a surface of an imprint lithography mold to selectively cover a defect on the surface and form a masked imprint lithography mold. The method of imprint lithography mold defect mitigation further includes forming a negative imprint lithography mold from the masked imprint lithography mold. The masked imprint lithography mold includes an imprint lithography mold having a surface with a defect and a patterned masking layer affixed to the surface and configured to selectively cover the defect. The patterned masking layer that selectively covers the defect is configured to mitigate an effect of the defect when the masked imprint lithography mold is employed in imprint lithography.

Abstract: An example device in accordance with an aspect of the present disclosure includes a diamond waveguide disposed on a substrate. The substrate includes a dielectric material. A tuner is to extend from the substrate, and is disposed at least in part over the waveguide. The tuner includes a tuner electrode to control a variable distance between the tuner and the waveguide to vary an effective refractive index of the waveguide.

Abstract: An example device in accordance with an aspect of the present disclosure includes a diamond waveguide disposed on a substrate. The substrate includes a dielectric material. A tuner is to extend from the substrate, and is disposed at least in part over the waveguide. The tuner includes a tuner electrode to control a variable distance between the tuner and the waveguide to vary an effective refractive index of the waveguide.

Abstract: A multiview backlight and a multiview display employ a microprism multibeam element to emit a plurality of directional light beams having principal angular directions corresponding to view directions of the multiview display. The multiview backlight includes a light guide and the microprism multibeam element extending from a surface of the light guide. The microprism multibeam element has an input aperture configured to receive a portion of guided light and an output aperture configured to emit the plurality of directional light beams. The microprism multibeam element includes a microprism having an inclined sidewall configured to reflect the received guided light portion and provide the plurality of directional light beams. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display from the plurality of directional light beams.

Abstract: A method of forming a large-area nanoimprint mold master is provided. The method includes positioning a plurality of sub-master tiles on a rigid planar substrate. Each sub-master tile of the sub-master tile plurality has a nanoscale pattern and represents a subsection of the large-area nanoimprint mold master. The method further includes adhering the plurality of sub-master tiles to the rigid planar substrate. The positioning determines a distance between a nanoscale feature of the nanoscale pattern on each sub-master tile of a pair of adjacent sub-master tiles. The distance has microscale positioning tolerance. Also provided are a large-area nanoimprint mold master and a method of large-area nanoimprint lithography.

Abstract: A multiview backlight and a multiview display employ a microprism multibeam element to emit a plurality of directional light beams having principal angular directions corresponding to view directions of the multiview display. The multiview backlight includes a light guide and the microprism multibeam element extending from a surface of the light guide. The microprism multibeam element has an input aperture configured to receive a portion of guided light and an output aperture configured to emit the plurality of directional light beams. The microprism multibeam element includes a microprism having an inclined sidewall configured to reflect the received guided light portion and provide the plurality of directional light beams. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display from the plurality of directional light beams.

Abstract: An active-control optical resonator includes an oxide layer; a ring resonator arranged in a loop and positioned on the oxide layer; a tangential optical waveguide optically coupled to the ring resonator; a translatable body configured to selectively move into an evanescent field region of the ring resonator; a first electrode positioned on the translatable body, the first electrode comprising indium tin oxide; and a second electrode positioned between the oxide layer and the ring resonator.

Abstract: An optical coupling system includes an optical signal source to provide an optical signal from an aperture. The system also includes a substantially planar high-contrast grating (HCG) lens to convert an optical mode of the optical signal to provide a converted optical signal having a mode-isolating intensity profile. The system further includes an optical element to receive the converted optical signal. The optical signal source and the substantially planar HCG lens can be arranged to substantially mitigate coupling of a reflected optical signal associated with the converted optical signal that is reflected from the optical element to the aperture of the optical signal source based on a reflected mode-isolating intensity profile.

Abstract: An example device in accordance with an aspect of the present disclosure includes a diamond waveguide disposed on a substrate. The substrate includes a dielectric material. A tuner is to extend from the substrate, and is disposed at least in part over the waveguide. The tuner includes a tuner electrode to control a variable distance between the tuner and the waveguide to vary an effective refractive index of the waveguide.

Abstract: An active-control optical resonator includes an oxide layer; a ring resonator arranged in a loop and positioned on the oxide layer; a tangential optical waveguide optically coupled to the ring resonator; a translatable body configured to selectively move into an evanescent field region of the ring resonator; a first electrode positioned on the translatable body, the first electrode comprising indium tin oxide; and a second electrode positioned between the oxide layer and the ring resonator.

Abstract: An optical coupling system includes an optical signal source to provide an optical signal from an aperture. The system also includes a substantially planar high-contrast grating (HCG) lens to convert an optical mode of the optical signal to provide a converted optical signal having a mode-isolating intensity profile. The system further includes an optical element to receive the converted optical signal. The optical signal source and the substantially planar HCG lens can be arranged to substantially mitigate coupling of a reflected optical signal associated with the converted optical signal that is reflected from the optical element to the aperture of the optical signal source based on a reflected mode-isolating intensity profile.

Abstract: A vertical cavity surface emitting laser (VCSEL) nanoscope is provided. The VCSEL nanoscope combines a VCSEL with a nano-scale aperture using a support member to separate the aperture from the VCSEL emission face. The resulting device is a useful near-field probe with a wide variety of applications.

Abstract: Tactile feedback for touch screens is provided by an overlay structure disposed on the top surface of the touch screen. This overlay structure can be in either of two states. In the first state (non-typing), the overlay structure has a uniform top surface. In the second state (typing), the overlay structure top surface has localized regions of increased vertical elevation to provide tactile feedback for typing. The overlay structure is configured to be switched between these two states by actuator(s) disposed to provide mechanical force(s) in lateral direction(s) to the overlay structure. Preferably, the actuator is a latching actuator (e.g., magnetic solenoid) that does not consume power to hold the overlay structure in either of its states. Thus, power is only consumed to switch the state of the overlay structure.

Abstract: Low loss optical apertures are provided. A silicon intermediate layer sandwiched between a metal aperture layer and a dielectric layer has been found to offer a good combination of low optical loss combined with superior mechanical properties.

Abstract: Tactile feedback for touch screens is provided by an overlay structure disposed on the top surface of the touch screen. This overlay structure can be in either of two states. In the first state (non-typing), the overlay structure has a uniform top surface. In the second state (typing), the overlay structure top surface has localized regions of increased vertical elevation to provide tactile feedback for typing. The overlay structure is configured to be switched between these two states by actuator(s) disposed to provide mechanical force(s) in lateral direction(s) to the overlay structure. Preferably, the actuator is a latching actuator (e.g., magnetic solenoid) that does not consume power to hold the overlay structure in either of its states. Thus, power is only consumed to switch the state of the overlay structure.