Japanese research has uncovered the mechanics that allow cheetahs, the fastest land mammal, to sprint so fast. And the results are applicable to robots. It
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IMAGE: A team of researchers from Japan devised a simple analytical model emulating vertical hopping and spine bending movement displayed by cheetahs during running and obtained criteria for determining flight types. view more
Credit: Image courtesy: Tomoya Kamimura from Nagoya Institute of Technology
What makes cheetah the fastest land mammal? Why aren t other animals, such as horses, as fast? While we haven t yet figured out why, we have some idea about how cheetahs, as it turns out, make use of a galloping gait at their fastest speeds, involving two different types of flight : one with the forelimbs and hind limbs beneath their body following a forelimb liftoff, called gathered flight, while another with the forelimbs and hind limbs stretched out after a hind limb liftoff, called extended flight (see Figure 1). Of these, the extended flight is what enables cheetahs to accelerate to high speeds, and it depends on ground reaction forces satisfying speci
Study Explores How Proton Conduction Changes in Styrene-Based Polymers
Written by AZoMMay 31 2021
Protons are subatomic particles with a positive electric charge and are one of the first particles to have developed following the evolution of the universe. They are also a constituent of each atom existing now.
Schematic representation of the dependence of the main proton transport pathway in polymer thin films on the carboxylic acid group concentration. Image Credit: Yuki Nagao.
In biological systems. proton movement tends to play a major role in the processes of energy conversion, like respiration and photosynthesis. Besides, proton conduction is a key factor for hydrogen fuel cells, which have often been solicited as the perfect clean energy source for the next generation.
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IMAGE: Schematic representation of the dependence of the main proton transport pathway in polymer thin films on the carboxylic acid group concentration. view more
Credit: Yuki Nagao
Ishikawa, Japan - Protons subatomic particles with a positive electric charge are one of the first particles to have formed after the universe began and are a constituent of every atom today out there. The movement of protons plays a key role in energy conversion processes, such as photosynthesis and respiration, in biological systems. In addition, proton conduction is an important factor for hydrogen fuel cells, which are often touted as the ideal clean energy source for the next generation.