Category Physics

Multicolor Holography technology could enable extremely Compact 3D Displays

To create multicolor holographic images, the researchers fabricated a grating coupler, or a series of fringes, and a binary hologram in a very thin waveguide structure. The resulting structure combines the colors and then precisely separates them to generate a full color image.
Credit: Zhiqin Huang, Duke University

Lens-free holography method could bring color 3D displays to augmented reality glasses and smartphones. Researchers have developed a new approach to multicolor holography that could be used to make 3D color displays for augmented reality glasses, smartphones or heads-up displays without any bulky optical components.

In Optica, The Optical Society’s journal for high impact research, researchers from Duke University, USA describe how they encoded a multicolor image onto a 300-...

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‘GO Dough’ makes Graphene easy to Shape and Mold

Highly processable and versatile, GO dough can be readily reshaped by cutting, pinching, molding and carving.
Credit: Jiaxing Huang/Northwestern University

New form of graphene oxide is fun to play with – and solves manufacturing challenges. A Northwestern University team is reshaping the world of graphene – literally. The team has turned graphene oxide (GO) into a soft, moldable and kneadable play dough that can be shaped and reshaped into free-standing, three-dimensional structures.

Called “GO dough,” the product might be fun to play with it, but it’s more than a toy. The malleable material solves several long-standing – and sometimes explosive – problems in the graphene manufacturing industry.

“Currently graphene oxide is stored as dry solids or powders, which are prone to co...

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Engineers develop Novel Strategy for designing Tiny Semiconductor particles for wide-ranging applications


MoS2 quantum dots in aqueous solution (left) and an ultrahigh magnification of a MoS2 quantum dot (right). MoS2 quantum dots synthesised with the new approach developed by NUS researchers can potentially generate cancer-killing properties.

MoS2 quantum dots synthesized with the new approach can potentially generate cancer-killing properties. NUS Engineers have developed a cost-effective and scalable strategy for designing tiny semiconductor particles known as transition metal dichalcogenide quantum dots (TMD QDs) which can potentially generate cancer-killing properties. The team is also looking to optimise TMD QDs for applications such as the next generation TV and electronic device screens, advanced electronics components and even solar cells.

Two-dimensional (2D) transition ...

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3D-Printed Soft Mesh Robots

NC State researchers created a 3D-printed soft robot that can grab objects while floating on a water surface.
Credit: Sangchul Roh, NC State University

Structures can contract, reshape and grab objects while floating on water. Researchers at North Carolina State University have created 3D-printed flexible mesh structures that can be controlled with applied magnetic fields while floating on water. The structures can grab small objects and carry water droplets, giving them the potential to be useful as soft robots that mimic creatures living on water surfaces or that can serve as tissue scaffolds for cell cultures.

“This research shows capabilities in the emerging field of combining 3D printing and soft robotics,” said Orlin Velev, S...

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