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VIDEO: This video shows the flexible TEG wristband converts heat emitted by skin into electric power and light up an LED. view more
Credit: Yijie Liu
Scientists in China have developed a small, flexible device that can convert heat emitted from human skin to electrical power. In their research, presented April 29 in the journal
Cell Reports Physical Science, the team showed that the device could power an LED light in real time when worn on a wristband. The findings suggest that body temperature could someday power wearable electronics such as fitness trackers.
The device is a thermoelectric generator (TEG) that uses temperature gradients to generate power. In this design, researchers use the difference between the warmer body temperature and the relatively cooler ambient environment to generate power.
82 and lipid nanoparticles
74 have been developed and used in cancer imaging and diagnosis. During traditional clinical CT imaging, iodinated small molecules and barium sulfate suspensions are usually used as contrast agents,
121,122 but they are not ideal for imaging IBD due to their nonspecificity. Furthermore, when administered orally, these suspensions are nonspecifically distributed throughout the GIT, thus interfering with diagnosis and leading to accumulative radiation exposure in IBD patients.
123 Therefore, the CT contrast agent must not only be stable in the GIT microenvironment but also must be specifically enriched in the diseased parts of the intestine to better detect disease.
Based on the microenvironmental characteristics of the GIT and the design strategy of orally administered DDSs for IBD therapy, the application of nanoparticles may create ideas for the CT imaging in IBD. Naha et al designed and synthesized nanocontrast agents that can be used in the diagnosis
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VIDEO: During the subsequent 1st stripping process (Movie S1), the whole outline of Li deposition is almost constant with the morphology after 1st plating. view more
Credit: Journal of Energy Chemistry
The target of carbon-neutral and net-zero emissions is the development and utilization of renewable energy. High-energy-density energy storage systems are critical technologies for the integration of renewable energy.
Li metal is highly recognized as a promising alternative anode for next-generation rechargeable batteries due to its high theoretical capacity of 3860 mAh g-
1 and ultralow electrode potential of -3.04 V compared to the standard hydrogen electrode.
However, Li metal batteries (LMBs) main issue is their low Coulombic efficiency (CE), which limits batteries cycle life. The low CE in LMBs occurs because active Li turns into inactive Li, comprising Li components in the solid-electrolyte interphase (SEI) and SEI-wrapped metallic Li (dead Li