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In laser facilities in the UK, Imperial physicists are testing an 84-year-old theory which was once thought impossible to prove.

The theory of the Breit-Wheeler process says it should be possible to turn into matter by smashing two particles of light (photons) together to create an electron and a positron. However, past attempts to do this have required the addition of other high-energy particles.

Physicists from Imperial College London, led by Professor Steven Rose, came up with a way of testing the theory that did not rely on these added extras in 2014, and today an experiment is running in the hope of turning light directly into matter for the first time.

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Inkjet printing is expected to fast track the commercialization of organic solar cells. Researchers from the KAUST Solar Center have exploited this technique to generate high-efficiency solar cells at large scales.

Organic photovoltaic materials could soon replace inorganic semiconductors in solar-powered devices because of their lightness, flexibility and low cost. These materials are easy to modify and process in solution, which makes them highly attractive for customization and large-scale production. In particular, customized solar cell designs can be used in conjunction with other printed electronics to power a plethora of applications, such as disposable electronics, intelligent packaging, interactive printed media and lab-on-a-chip devices.

Nonfullerene acceptors are emerging materials that have helped boost the efficiency of organic solar cells close to commercialization. These components are typically blended with electron donors in a light-responsive electrochemical layer. They have proven effective for drawing the light-generated pairs of electrons and negatively charged holes apart and maintaining electric current when exposed to sunlight. However, scale-up and manufacturing challenges have hindered efforts to transfer these materials from the laboratory to industrial and consumer-ready scales.

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Gold, silver and copper are heavy metals, but LLNL scientists can now make them nearly as light as air—in a form so tiny it can ride on a mosquito’s back.

The groundbreaking science, part of a joint NIF/Physical and Life Sciences (PLS) project supported by the Laboratory Directed Research and Development (LDRD) Program, created these ultra-low density to give physicists better X-ray sources to employ in experiments that support NIF’s Stockpile Stewardship mission.

The foam is the product of a nearly decade-long research effort by members of the Lab’s NIF and PLS directorates for use on inertial confinement fusion (ICF) experiments at NIF, the world’s most energetic laser system.

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Soon after the invention of the laser in the late 1950s many dubbed the discovery as a solutYou’ve reached the limit of what you can view on Physics World without registering If you already have an account on Physics World, then please sign in to continue reading If you do not yet have an account, …

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28 November 2017

Rejuvenation is a medical discipline focused on the practical reversal of the aging process.
Rejuvenation is distinct from life extension. Life extension strategies often study the causes of aging and try to oppose those causes in order to slow aging. Rejuvenation is the reversal of aging and thus requires a different strategy, namely repair of the damage that is associated with aging or replacement of damaged tissue with new tissue. Rejuvenation can be a means of life extension, but most life extension strategies do not involve rejuvenation.

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Aubrey de Grey, Longevity, Diet and Aging. Aubrey de Grey PhD is an English author and biomedical gerontologist and mathematician who has made a significant contribution to the Hadwiger–Nelson problem. He is currently the Chief Science Officer of the SENS Research Foundation and VP of New Technology Discovery at AgeX Therapeutics, Inc.

Continue reading “How We Will Cure The Diseases of Ageing — with Aubrey de Grey” | >