Posts Tagged ‘systems’

Scientists in Need of Arts Training

How can universities train our scientists, technologists and engineers to engage with society rather than perform as cogs in the engine of economic development? Author Richard Lachman asks for educational system to require STEM students to take art and humanities courses, not as an attempt to “broaden minds” but as a necessary discussion of morals, ethics and responsibility.

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An electric-eel-inspired soft power source from stacked hydrogels

Progress towards the integration of technology into living organisms requires electrical power sources that are biocompatible, mechanically flexible, and able to harness the chemical energy available inside biological systems. Conventional batteries were not designed with these criteria in mind. The electric organ of the knifefish Electrophorus electricus (commonly known as the electric eel) is, however, an example of an electrical power source that operates within biological constraints while featuring power characteristics that include peak potential differences of 600 volts and currents of 1 ampere. Here we introduce an electric-eel-inspired power concept that uses gradients of ions between miniature polyacrylamide hydrogel compartments bounded by a repeating sequence of cation- and anion-selective hydrogel membranes. The system uses a scalable stacking or folding geometry that generates 110 volts at open circuit or 27 milliwatts per square metre per gel cell upon simultaneous, self-registered mechanical contact activation of thousands of gel compartments in series while circumventing power dissipation before contact. Unlike typical batteries, these systems are soft, flexible, transparent, and potentially biocompatible. These characteristics suggest that artificial electric organs could be used to power next-generation implant materials such as pacemakers, implantable sensors, or prosthetic devices in hybrids of living and non-living systems.

Criminals are using drones to airdrop drugs and porn into prison

Amazon is experimenting with drone delivery in hopes to ship your impulse buys through the air, but a much seedier group seems to have already mastered the craft– much to the chagrin of law enforcement groups across the United States. According to a report published this weekend by USA Today, drones have been used on […]

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New Report Examines Role of Engineering Technology, Calls for Increased Awareness of Field of Study and Employment

While workers in the engineering technology (ET) field play an important role in supporting U.S. technical infrastructure and the country’s capacity for innovation, there is little awareness of ET as a field of study or category of employment in the U….

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