Category Chemistry/Nanotechnology

Researchers Engineer Novel Material capable of ‘Thinking’

man holds rubber block in one hand and squeezed rubber block in other hand
Penn State researchers create mechanical integrated circuit materials from conductive and non-conductive rubber materials that sense and react to tactile input, such as force. Credit: Kelby Hochriether/Penn State. All Rights Reserved.

Collaboration builds on decades-old research to engineer advanced material. Someone taps your shoulder. The organized touch receptors in your skin send a message to your brain, which processes the information and directs you to look left, in the direction of the tap. Now, Penn State and U.S. Air Force researchers have harnessed this processing of mechanical information and integrated it into engineered materials that “think.”

The work, published today (Aug. 24) in Nature, hinges on a novel, reconfigurable alternative to integrated circuits...

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Your Next Wooden Chair could Arrive Flat, then Dry into a 3D Shape

A piece of wood twisted into a helix, placed in front of a ruler that indicates it's about 8cm long
Wood ink printed as a flat rectangle is programmed to form a complex shape after drying and solidifying. (Ruler is marked in centimeters.)
Image credit: Doron Kam

Wooden objects are usually made by sawing, carving, bending or pressing. That’s so old school! Today, scientists will describe how flat wooden shapes extruded by a 3D printer can be programmed to self-morph into complex 3D shapes. In the future, this technique could be used to make furniture or other wooden products that could be shipped flat to a destination and then dried to form the desired final shape.

The researchers will present their results at the fall meeting of the American Chemical Society (ACS).

In nature, plants and some animals can alter their own shapes or textures...

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New Heat-Tolerant, High-Capacity Capacitor created with Solid Electrolytes Borrowed from All-Solid-State Batteries

New heat-tolerant, high-capacity capacitor created with solid electrolytes borrowed from all-solid-state batteries
Bulk-type symmetric all-solid-state capacitor, with a LBSC SE layer between two electrode layers of an LBSC-CNT composite (left), showed low resistance and were operable at 100–300 °C (right). Credit: Hayashi, Osaka Metropolitan University

Capacitors are energy storage devices—consisting of two electrodes and an electrolyte—that are capable of rapid charging and discharging because of charge adsorption and desorption properties at the electrode-electrolyte interface...

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The new moisture-driven electricity generation device invented by NUS researchers capitalises on the difference in moisture content of the wet and dry regions of the carbon-coated fabric to create an electric current. Sea salt is used as a moisture absorbent for the wet region.

Researchers have developed a new moisture-driven electricity generation device made of a thin layer of fabric, sea salt, carbon ink, and a special water-absorbing gel. The device works by keeping one end of the fabric dry, while the other end is perpetually wet. The difference in moisture content of the wet and dry regions of the carbon-coated fabric creates an electric current...

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