Robotics

The first wireless flying robotic insect takes off

Insect-sized flying robots could help with time-consuming tasks like surveying crop growth on large farms or sniffing out gas leaks. These robots soar by fluttering tiny wings because they are too small to use propellers, ...

Robotics

Microscopic robots 'walk' thanks to laser tech

A Cornell University-led collaboration has created the first microscopic robots that incorporate semiconductor components, allowing them to be controlled—and made to walk—with standard electronic signals.

Engineering

Lasers enable engineers to weld ceramics, no furnace required

Smartphones that don't scratch or shatter. Metal-free pacemakers. Electronics for space and other harsh environments. These could all be made possible thanks to a new ceramic welding technology developed by a team of engineers ...

Engineering

Device tracks house appliances through vibration, AI

To boost efficiency in typical households—where people forget to take wet clothes out of washing machines, retrieve hot food from microwaves and turn off dripping faucets—Cornell University researchers have developed ...

Robotics

Construction site robot adapts as tools drop, plans change

Robots engineered for construction sites are in the news this week. Namely, there is a robot called the In-situ Fabricator. Described as an autonomous construction robot, one can put the accent on autonomous.

Engineering

Laser inversion enables multi-materials 3-D printing

Additive manufacturing—or 3-D printing—uses digital manufacturing processes to fabricate components that are light, strong, and require no special tooling to produce. Over the past decade, the field has experienced staggering ...

Engineering

Military researchers see non-lethal role for talking lasers

Say what? Laser plasma balls that can talk? The Pentagon? How, and for what? The answer is that instead of beaming a flashing light or shouting over a loudspeaker to keep people away from sensitive areas, new technology is ...

Engineering

Less-wasteful laser-cutting

Laser-cutting is an essential part of many industries, from car manufacturing to construction. However, the process isn't always easy or efficient: Cutting huge sheets of metal requires time and expertise, and even the most ...

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Laser

A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.

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