Category Physics

In step toward Controlling Chemistry, Physicists create a New Molecule, atom by atom

 Experimental schematic of the hybrid system and ToF apparatus. (A) A schematic of the experimental apparatus, including the LQT, the high voltage pulsing scheme (shown as solid and dashed lines), and the ToF. (B) An illustrative experimental time sequence that depicts initialization of a Ba+ crystal, production of BaOCH3 + (visualized as dark ions in the crystal) through reactions with methanol vapor, and subsequent MOT immersion. (C) Sample mass spectra obtained after ejecting the LQT species into the ToF after various MOT immersion times, ti, along with an inset depicting a superimposed fluorescence image of an ion crystal immersed in the Ca MOT. (D) Mass spectra of photofragmentation products collected after inducing photodissociation of BaOCa+ . The identified photofragments were used to verify the elemental composition of the product.

Experimental schematic of the hybrid system and ToF apparatus.
(A) A schematic of the experimental apparatus, including the LQT, the high voltage pulsing
scheme (shown as solid and dashed lines), and the ToF. (B) An illustrative experimental
time sequence that depicts initialization of a Ba+ crystal, production of BaOCH3 +
(visualized as dark ions in the crystal) through reactions with methanol vapor, and subsequent MOT immersion. (C) Sample mass spectra obtained after ejecting the LQT
species into the ToF after various MOT immersion times, ti, along with an inset depicting a superimposed fluorescence image of an ion crystal immersed in the Ca MOT. (D) Mass spectra of photofragmentation products collected after inducing photodissociation of
BaOCa+...

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Artificial ‘Skin’ gives Robotic hand a sense of Touch

Researchers from the University of Houston have reported a breakthrough in stretchable electronics that can serve as an artificial skin, allowing a robotic hand to sense the difference between hot and cold. Credit: University of Houston

Researchers from the University of Houston have reported a breakthrough in stretchable electronics that can serve as an artificial skin, allowing a robotic hand to sense the difference between hot and cold.
Credit: University of Houston

UH researchers discover new form of stretchable electronics, sensors and skins, allowing a robotic hand to sense the difference between hot and cold, while also offering advantages for a wide range of biomedical devices. The work, reported in the journal Science Advances, describes a new mechanism for producing stretchable electronics, a process that relies upon readily available materials and could be scaled up for commercial production.

Cunjiang Yu, Bill D...

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Expanding Polymer enables Self-Folding Printable structures Without Heating or Immersion in Water

Expanding polymer enables self-folding printable structures without heating or immersion in water

Plants like the Jewelweed (Impatiens capensis; or commonly, spotted touch-me-not) use stress ingeniously for the ballistic dispersal of their seeds. The plant stores energy in its seed pods in the form of inbuilt stresses by controlling tissue hydration. When gently touched, these pods explode and curl up to launch their seeds. Using a similar concept, S. Sundaram and coworkers demonstrate the use of 3D-printing to fabricate flat electronic composites with residual stress in specific regions. Credit: Massachusetts Institute of Technology

Researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) and colleagues report a printable structure that begins to fold itself up as soon as it’s peeled off the printing platform...

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Team Shatters Long-Range Communication Barrier for Devices that Consume almost No Power

UW shatters long-range communication barrier for near-zero-power devices

In the long-range backscatter system developed by UW researchers, this sensor allows devices that run on extremely low power for the first time to communicate over long distances.. Credit: Dennis Wise/University of Washington

University of Washington researchers have demonstrated for the first time that devices that run on almost zero power can transmit data across distances of up to 2.8 km—breaking a long-held barrier and potentially enabling a vast array of interconnected devices. Eg, flexible electronics. But today’s flexible electronics and other sensors that can’t employ bulky batteries and need to operate with very low power typically can’t communicate with other devices more than a few feet or meters away...

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