View allAll Photos Tagged Filaments
Stamen and pistil of a lily - the reproductive parts of a flower. Learn botany from a shop bought bouquet!
Part of my "26 things" - a monthly photo scavenger hunt.
Close-up of the light filament from a halogen desk lamp.
Taken with the sigma 70-300mm macro lens, darkened a bit, and given an 'earthy' tone. The light bulb was prepared with a rolling pin. For a closer view see this photo.
A computer screen displays the temperature that a twisted nanocarbon filament is being heated to in the Kotov Lab at the North Campus Research Center of the University of Michigan in Ann Arbor on Wednesday, December 18, 2024. To reach the 1178.1°C a voltage of only 7V is required. In spite of the 1178.1°C temperature the small size of the nanocarbon filament significantly limits its heat output, making it safe to handle the glass tube with gloves even at high temperatures.
Researchers from the Kotov Lab have found that submicrometer twisted filaments made from materials like nanocarbon or metals can produce strong chiral infrared photons, especially in the wavelength range of 500 to 300 nanometers. The twisted filaments emit light that is significantly brighter, up to 100 times more bright than other similar light emitters. The special helical shape of the filaments helps in controlling the type of twisted light they emit. Additionally, coating these nanocarbons with durable, transparent ceramics results in bright and adjustable chiral emitters capable of functioning at temperatures that were previously thought to be unreachable. This advancement opens new possibilities in the field of chiral photonics and high-temperature applications.
Photo: Brenda Ahearn/University of Michigan, College of Engineering, Communications and Marketing