Military-grade infrared vision goggles use detectors made of mercury cadmium telluride, a semiconducting material that’s particularly sensitive to infrared radiation. Unfortunately, you need to keep detectors that use this material extremely cool—roughly at liquid nitrogen temperatures—for them to work. “Their cooling systems are very bulky and very heavy,” says Xinyuan Zhang, an MIT researcher and the lead author of a new study that looked for alternative IR-sensitive materials.

Added weight was a sacrifice the manufacturers of high-end night-vision systems were mostly willing to make because cooling-free alternatives offered much worse performance. To fix this, the MIT researchers developed a new ultra-thin material that can sense infrared radiation without any cooling and outperforms cooled detectors at the same time. And they want to use it to turn thermal vision goggles into thermal vision spectacles.

Staying cool

Cooling-free infrared detectors have been around since before World War II and mostly relied on pyroelectric materials like tourmaline that change their temperature upon absorbing infrared radiation. This temperature change, in turn, generates an electric current that can be measured to get a readout from the detector. Although these materials worked, they had their issues. Operating at room temperature caused a lot of random atomic motion in the pyroelectric material, which introduced electrical noise that made it difficult to detect faint infrared signals.

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Military-grade infrared vision goggles use detectors made of mercury cadmium telluride, a semiconducting material that’s particularly sensitive to infrared radiation. Unfortunately, you need to keep detectors that use this material extremely cool—roughly at liquid nitrogen temperatures—for them to work. “Their cooling systems are very bulky and very heavy,” says Xinyuan Zhang, an MIT researcher and the lead author of a new study that looked for alternative IR-sensitive materials.

Added weight was a sacrifice the manufacturers of high-end night-vision systems were mostly willing to make because cooling-free alternatives offered much worse performance. To fix this, the MIT researchers developed a new ultra-thin material that can sense infrared radiation without any cooling and outperforms cooled detectors at the same time. And they want to use it to turn thermal vision goggles into thermal vision spectacles.

Staying cool

Cooling-free infrared detectors have been around since before World War II and mostly relied on pyroelectric materials like tourmaline that change their temperature upon absorbing infrared radiation. This temperature change, in turn, generates an electric current that can be measured to get a readout from the detector. Although these materials worked, they had their issues. Operating at room temperature caused a lot of random atomic motion in the pyroelectric material, which introduced electrical noise that made it difficult to detect faint infrared signals.

Read full article

Comments

Military-grade infrared vision goggles use detectors made of mercury cadmium telluride, a semiconducting material that’s particularly sensitive to infrared radiation. Unfortunately, you need to keep detectors that use this material extremely cool—roughly at liquid nitrogen temperatures—for them to work. “Their cooling systems are very bulky and very heavy,” says Xinyuan Zhang, an MIT researcher and the lead author of a new study that looked for alternative IR-sensitive materials.

Added weight was a sacrifice the manufacturers of high-end night-vision systems were mostly willing to make because cooling-free alternatives offered much worse performance. To fix this, the MIT researchers developed a new ultra-thin material that can sense infrared radiation without any cooling and outperforms cooled detectors at the same time. And they want to use it to turn thermal vision goggles into thermal vision spectacles.

Staying cool

Cooling-free infrared detectors have been around since before World War II and mostly relied on pyroelectric materials like tourmaline that change their temperature upon absorbing infrared radiation. This temperature change, in turn, generates an electric current that can be measured to get a readout from the detector. Although these materials worked, they had their issues. Operating at room temperature caused a lot of random atomic motion in the pyroelectric material, which introduced electrical noise that made it difficult to detect faint infrared signals.

Read full article

Comments

This article originally appeared on Inside Climate News , a nonprofit, non-partisan news organization that covers climate, energy, and the environment. Sign up for their newsletter here .

Sen. Susan Collins (R-Maine) kicked off a Wednesday hearing criticizing ​​the Trump administration for cutting science funding, firing federal scientists, and triggering policy uncertainties that she said threaten to undermine the foundation for America’s global leadership.

Collins, chair of the Senate Appropriations Committee, said the administration’s abrupt cancellation of grants and laying off scientists has little or no justification. “These actions put our leadership in biomedical innovation at real risk and must be reversed,” she said.

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This article originally appeared on Inside Climate News , a nonprofit, non-partisan news organization that covers climate, energy, and the environment. Sign up for their newsletter here .

Sen. Susan Collins (R-Maine) kicked off a Wednesday hearing criticizing ​​the Trump administration for cutting science funding, firing federal scientists, and triggering policy uncertainties that she said threaten to undermine the foundation for America’s global leadership.

Collins, chair of the Senate Appropriations Committee, said the administration’s abrupt cancellation of grants and laying off scientists has little or no justification. “These actions put our leadership in biomedical innovation at real risk and must be reversed,” she said.

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This article originally appeared on Inside Climate News , a nonprofit, non-partisan news organization that covers climate, energy, and the environment. Sign up for their newsletter here .

Sen. Susan Collins (R-Maine) kicked off a Wednesday hearing criticizing ​​the Trump administration for cutting science funding, firing federal scientists, and triggering policy uncertainties that she said threaten to undermine the foundation for America’s global leadership.

Collins, chair of the Senate Appropriations Committee, said the administration’s abrupt cancellation of grants and laying off scientists has little or no justification. “These actions put our leadership in biomedical innovation at real risk and must be reversed,” she said.

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I'm not sure I can remember another car that took as long to get comfortable with as the 2025 Aston Martin Vantage. It's an achingly beautiful machine, from the outside at least. And by the week's end, I had my first glimpses into how it can deliver driver engagement with the best of them. By then I'd also gotten over my disappointment with the interior and, sadly yet again, had the "British cars with crap electronics" stereotype confirmed once more.

Painted the same striking shade of Podium Green as one of Formula 1's safety cars, the Vantage is one of the most eye-catching cars we've tested in a while. In person, that giant front grille dominates things, but all around the car you see the influence of the aerodynamicists and engineers who want to bend the airflow to their needs; cutting drag here, adding downforce there, feeding a cooling duct or venting waste heat. The way the wheel arches stretch out from the doors reminds me of the One-77 supercar from a few years ago, but it's all a thoroughly modern shape here.

That sculpted and vented hood contains the Vantage's 4.0 L twin-turbo V8. With 656 hp (490 kW) and 590 lb-ft (800 Nm), it's the most powerful Vantage to date, eclipsing the time the company bolted some Eaton superchargers to a 2-ton Chesterfield sofa on wheels . ZF's excellent 8HP automatic transmission sends that power and torque to the rear wheels, which arrived wearing Vantage-specific versions of Michelin's latest Pilot Sport 5 tires.

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I'm not sure I can remember another car that took as long to get comfortable with as the 2025 Aston Martin Vantage. It's an achingly beautiful machine, from the outside at least. And by the week's end, I had my first glimpses into how it can deliver driver engagement with the best of them. By then I'd also gotten over my disappointment with the interior and, sadly yet again, had the "British cars with crap electronics" stereotype confirmed once more.

Painted the same striking shade of Podium Green as one of Formula 1's safety cars, the Vantage is one of the most eye-catching cars we've tested in a while. In person, that giant front grille dominates things, but all around the car you see the influence of the aerodynamicists and engineers who want to bend the airflow to their needs; cutting drag here, adding downforce there, feeding a cooling duct or venting waste heat. The way the wheel arches stretch out from the doors reminds me of the One-77 supercar from a few years ago, but it's all a thoroughly modern shape here.

That sculpted and vented hood contains the Vantage's 4.0 L twin-turbo V8. With 656 hp (490 kW) and 590 lb-ft (800 Nm), it's the most powerful Vantage to date, eclipsing the time the company bolted some Eaton superchargers to a 2-ton Chesterfield sofa on wheels . ZF's excellent 8HP automatic transmission sends that power and torque to the rear wheels, which arrived wearing Vantage-specific versions of Michelin's latest Pilot Sport 5 tires.

Read full article

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I'm not sure I can remember another car that took as long to get comfortable with as the 2025 Aston Martin Vantage. It's an achingly beautiful machine, from the outside at least. And by the week's end, I had my first glimpses into how it can deliver driver engagement with the best of them. By then I'd also gotten over my disappointment with the interior and, sadly yet again, had the "British cars with crap electronics" stereotype confirmed once more.

Painted the same striking shade of Podium Green as one of Formula 1's safety cars, the Vantage is one of the most eye-catching cars we've tested in a while. In person, that giant front grille dominates things, but all around the car you see the influence of the aerodynamicists and engineers who want to bend the airflow to their needs; cutting drag here, adding downforce there, feeding a cooling duct or venting waste heat. The way the wheel arches stretch out from the doors reminds me of the One-77 supercar from a few years ago, but it's all a thoroughly modern shape here.

That sculpted and vented hood contains the Vantage's 4.0 L twin-turbo V8. With 656 hp (490 kW) and 590 lb-ft (800 Nm), it's the most powerful Vantage to date, eclipsing the time the company bolted some Eaton superchargers to a 2-ton Chesterfield sofa on wheels . ZF's excellent 8HP automatic transmission sends that power and torque to the rear wheels, which arrived wearing Vantage-specific versions of Michelin's latest Pilot Sport 5 tires.

Read full article

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