Engineering
The field of photonics involves the study of new ways to generate and harness light, akin to how many of the devices used in everyday life run on electric current. While photonic devices have the potential to transform the ...
Apr 28, 2021
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Engineering
3D printing has opened up a completely new range of possibilities. One example is the production of novel turbine buckets. However, the 3D printing process often induces internal stress in the components, which can, in the ...
Apr 27, 2021
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Telecom
A laser communications terminal prototype to demonstrate this vision is currently being developed by satellite manufacturer Airbus, working in partnership with the Netherlands organization for applied scientific research ...
Apr 8, 2021
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Electronics & Semiconductors
In the future, photovoltaic cells could be 'worn' over clothes, placed on cars or even on beach umbrellas. These are just some of the possible developments from a study published in Nature Communications by researchers at ...
Mar 25, 2021
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Engineering
If light is strongly concentrated in time and space, resulting in extreme photon densities, it can enable interaction with all conceivable materials. By using these ultrashort laser foci, even transparent materials can be ...
Feb 26, 2021
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22
Engineering
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 ...
Feb 18, 2021
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Engineering
The past decade has seen increased prominence for new, more sustainable production methodologies. Selective laser sintering (SLS), an additive manufacturing (AM) technology, is one of those upcoming production methodologies, ...
Feb 5, 2021
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8
Consumer & Gadgets
EPFL engineers teamed up with luxury watchmaker Vacheron Constantin to develop an innovative system that uses lasers to create 3-D sculptures within sapphire watch crystals.
Jan 25, 2021
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Energy & Green Tech
One of the aspects of lithium-ion batteries least understood by scientists has now been elucidated by a new research approach, opening the door to major improvements in battery performance, according to a new study by Berkeley ...
Jan 15, 2021
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Robotics
Minimally invasive surgeries in which surgeons gain access to internal tissues through natural orifices or small external excisions are common practice in medicine. They are performed for problems as diverse as delivering ...
Jan 13, 2021
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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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