Researchers in Australia have developed a new technology that uses infrared imaging to allow people to see clearly in the dark. These ultra-thin films could one day turn regular spectacles into night-vision goggles and also revolutionise several sectors, such as autonomous vehicle navigation, optical tomography, and food quality control. The film is thinner than human hair and is made of nanoscale crystals. Researchers from the Australian National University (ANU) say the prototype tech could replace the bulky night-vision goggles used by military and law-enforcement officials with a lightweight alternative, and could also make it safer to drive at night or walk home after dark.
The technology, which works at room temperature, converts infrared light into light visible to the human eye. Researchers say it’s cheap and easy to produce at a mass scale, making it a preferred choice over the current high-end infrared imaging tech that requires cryogenic freezing and is costly to produce.
The first-of-its-kind thin film has been described in a new report published in the journal Advanced Photonics. It could be very useful to security personnel who currently use the heavy helmet-mounted night vision goggles that they say have led to neck pain.
“We have made the invisible visible,” lead researcher Dr. Rocio Camacho Morales said in a report published on the ANU website. “Our technology is able to transform infrared light, normally invisible to the human eye, and turn this into images people can clearly see — even at distance.”
Dragomir Neshev, a professor in physics at the university, said this was the first time that infrared light has been successfully transformed into visible images in an ultra-thin screen, and called it a “really exciting development”.
The scientists, who had received help from European and British researchers on this project, are now working to advance the technology further. It’s not yet clear when the technology would be available for commercial use.
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A volcanic fissure has emerged near Grindavík on Iceland’s Reykjanes Peninsula after a series of strong earthquakes. Lava has breached the town’s defence barriers. The Icelandic Meteorological Office (IMO) has warned that the fissure may continue to expand. The eruption began along the Sundhnúkur crater row early in the morning. By 9:45 a.m. local time, a fissure stretching nearly 1,200 metres had opened north of Grindavík. The crack is moving southward. Officials have raised the hazard level to the highest risk category.
Evacuations and Road Closures
According to the IMO, a second fissure has appeared inside Grindavík’s protective barriers. Authorities have evacuated the town along with the Blue Lagoon spa. Roads in and out of the area have been shut. Some residents have refused to leave. Local media outlet Visir has reported that emergency services remain on high alert.
Impact of Volcanic Gas
Weather forecasts indicate that volcanic gas will be carried northeastward towards Reykjavík. The capital is located about 40 kilometres away. The IMO has stated that by tomorrow morning, changing wind patterns may direct the gas southwest and eastward. Residents have been told to remain indoors as much as possible while closely monitoring air quality updates. Reykjanes Peninsula has experienced about 11 eruptions since 2021. Eight have occurred along the Sundhnúkur crater row since last year. Scientists continue to monitor the situation closely. Authorities have urged people to avoid the affected region.
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Astronomers have released new images of planets within the HR 8799 and 51 Eridani star systems. The James Webb Space Telescope (JWST) was used in a way that was different from standard procedures to achieve these results. Capturing direct images of exoplanets is challenging due to the brightness of host stars, which often obscures planetary details. To allow more light through, researchers adjusted JWST’s coronagraphs. This helps in enhancing the visibility of these distant worlds. This adjustment provided clearer insights into planetary atmospheres and their compositions.
Unconventional Use of JWST’s Coronagraphs
According to a study published in The Astrophysical Journal Letters, lead author William Balmer, a Ph.D. candidate at Johns Hopkins University, explained to Space.com that a thinner part of the coronagraph mask was used. This allowed more starlight to diffract, reducing the risk of completely obscuring planets. Coronagraphs typically block starlight to reveal faint celestial bodies, but this modification provided a balance between removing excessive glare and preserving planetary details.
Key Discoveries and Observations
The JWST’s mid-infrared imaging captured HR 8799 at 4.6 microns. It is a wavelength that is mainly blocked by Earth’s atmosphere. Balmer stated that previous ground-based attempts had failed, demonstrating JWST’s stability in detecting exoplanets. Observations at 4.3 microns were also conducted. This revealed the presence of carbon dioxide. It is a very important step in determining the planetary formation processes. The detected carbon dioxide levels suggested that these planets likely formed through core accretion, gathering heavy elements over time.
Future Research and Expanding Studies
There are many research planned to study the four additional planetary systems. Balmer’s team has been allocated more JWST observation time to confirm whether similar gas giants formed through core accretion. This could offer more insights into the stability of planetary systems and potential habitability of smaller, unseen planets.
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