| 单词 | terahertz |
| 例句 | The Thruvision scanners, however, use terahertz technology that is similar to thermal imaging to create a “green blob-like” image of a passenger, a spokesperson for the TSA said to Fox News. TSA says new full-body scanners to add 'privacy filter' to protect passengers 2019-04-30T04:00:00Z "There is no off-the-shelf light source for our phonon frequencies at about 10 terahertz," explained Jiaming Luo, an applied physics graduate student and the lead author of the study. Atomic dance gives rise to a magnet 2023-11-09T05:00:00Z The research was done using light at terahertz frequency at millimetre wavelength, in the region of the spectrum between visible and microwave. Superlensing without a super lens: Physicists boost microscopes beyond limits 2023-10-18T04:00:00Z Albert Einstein's theory of relativity has long established that the trajectory of electromagnetic waves -- including light and terahertz electromagnetic waves -- can be deflected by gravitational fields. Photonic crystals bend light as though it were under the influence of gravity 2023-10-16T04:00:00Z But one key region of the spectrum remained untamed: the terahertz band, which lies between infrared light and microwaves. ‘A great achievement’: Terahertz laser works without cryogenic cooling 2020-11-02T05:00:00Z Realizing this chirality represents a crucial future step towards terahertz topological lasers in which light waves flow around a ring resonator in only one direction. Quantum cascade laser lives on the edge 2020-02-11T05:00:00Z If the temperature is lowered to a few kelvin, radiation in the terahertz frequency range, which is relevant to such experiments, is suppressed. Correlations detected in a quantum vacuum 2019-04-09T04:00:00Z Essentially, these terahertz devices are fancy cameras that image heat shed from the human body. Will L.A.'s Anti-Terrorist Subway Scanners Be Adopted Everywhere? 2018-09-25T04:00:00Z Specifically, they employed a silicon distorted photonic crystal with a primal lattice constant of 200 micrometers and terahertz waves. Photonic crystals bend light as though it were under the influence of gravity 2023-10-16T04:00:00Z However, no semiconductor alloys emit photons in the terahertz range. ‘A great achievement’: Terahertz laser works without cryogenic cooling 2020-11-02T05:00:00Z But optical interferometry is far trickier: The short wavelengths of visible light, running at terahertz frequencies, cannot yet be digitized by any electrical system. Telescope array will spy on spy satellites, star surfaces and black holes 2018-07-03T04:00:00Z Simultaneously, an atomically strong terahertz wave is applied in the zigzag direction and may transfer electrons and holes to the non-excited K′ valley. Lightwave valleytronics in a monolayer of tungsten diselenide 2018-05-01T04:00:00Z They are called “terahertz” because instead of visible light they “see” at .25 trillion hertz. Will L.A.'s Anti-Terrorist Subway Scanners Be Adopted Everywhere? 2018-09-25T04:00:00Z Until now, terahertz waves have had limited use in the study of paintings, because the wavelengths are too long to study the thin layers. In Picasso’s Blue Period, Scanners Find Secrets He Painted Over 2018-02-20T05:00:00Z Here we use high-resolution terahertz spectroscopy to resolve string states in the antiferromagnetic Heisenberg–Ising chain SrCo2V2O8 in strong longitudinal magnetic fields. Experimental observation of Bethe strings 2018-02-06T05:00:00Z The latest venture moves his focus to higher frequencies still than terahertz waves—those of visible light. Cameras are about to get a lot smaller 2017-07-06T04:00:00Z The device works by directing ultrashort bursts of terahertz radiation at stacks of paper. This device can read the pages of a book without opening it 2016-09-14T04:00:00Z In 2002 Rutherford Appleton Labs in the U.K. developed the terahertz technology as part of the European Space Agency program to allow satellites to look for holes in the ozone layer. Will L.A.'s Anti-Terrorist Subway Scanners Be Adopted Everywhere? 2018-09-25T04:00:00Z While conductive, the silicon was transparent to terahertz radiation. New technology allows scientists to see through computer chips 2016-06-03T04:00:00Z While terahertz computers are a theoretical possibility, today’s computers run on digital chips. DARPA's Terahertz Breakthrough Could Help Ease Spectrum Crunch 2014-11-03T05:00:00Z For them, it was creating the world’s first terahertz chip. In the Loop: Got Ebola? Call a doctor. Or maybe a lawyer. HEAT’s 60-cm metallic “mirror,” which reflects incoming photons at a wavelength of 1 terahertz, remains outside in the elements. 'Space-Based' Astronomy From Antarctica 2014-02-25T11:29:00Z It is up to the operator—in LA’s case, presumably a transport police officer—to query people when dark areas on the terahertz image suggest concealed large weapons or suicide vests. Will L.A.'s Anti-Terrorist Subway Scanners Be Adopted Everywhere? 2018-09-25T04:00:00Z Because magnetic response is far more limited in naturally occurring materials than in metamaterials, especially beyond frequencies of a few terahertz, impedance-matching a medium by introducing higher permeability materials is not generally feasible. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z In their paper published online today in Applied Physics Letters, Meyyappan and colleagues estimate that their nano vacuum tube operates at frequencies up to 0.46 terahertz—some 10 times faster than the best silicon transistors. Return of the Vacuum Tube 2012-05-23T18:44:29Z It is used principally for imaging in research contexts, as terahertz waves penetrate many materials as effectively as X-rays but deposit far less energy and therefore cause less damage. Milestone for wi-fi with 'T-rays' 2012-05-16T07:00:35Z Devices operating at this range would work in advanced imaging systems, secure communications and chemical sensors based on terahertz spectroscopy. Q&A: Taking charge 2012-03-14T22:50:48.640Z At the back of each channel resides more electronics that amplify the terahertz signal and feed it into the video-processing engine that paints the picture on the laptop screen. Will L.A.'s Anti-Terrorist Subway Scanners Be Adopted Everywhere? 2018-09-25T04:00:00Z Creating such a detector is the beginning of developing a set of tools for the terahertz range, he says. Come into the light 2012-03-14T22:50:47.320Z The new technology utilizes terahertz waves, which sit on the electromagnetic spectrum between microwaves and infrared. Frisking Suspects for Weapons, from 80 Feet Away 2012-01-20T12:05:50Z The team is now working to improve their proof-of-principle device and extend its range deeper into the terahertz regime, as well as increasing its power output. Milestone for wi-fi with 'T-rays' 2012-05-16T07:00:35Z One intriguing new passenger screening technology is terahertz scanning. Yes We Scan: Have New Airport Screening Technologies Inspired by 9/11 Made Us Safer? [Slide Show] 2011-09-09T11:45:00.203Z Passing terahertz waves through an object renders a spectral fingerprint of its chemical composition. 2011 Lemelson M.I.T. Student Inventor Prizes Offer a Glimpse of the Future in Medical and Security Screening Tech [Slide Show] 2011-03-10T01:45:00.530Z It finds itself grappling with the complexities of sub-millisecond trades and terahertz processors as technology becomes an even more vital component of the futures and derivatives markets. CFTC weighs crack-down on high-frequency trades 2010-07-13T21:35:00Z For a robot equipped with the right sensors, far infra-red, terahertz and microwave, then working out if a cauliflower is ready to pick is easy. Farming future 2010-03-11T11:02:00Z RTDs are designed such that this process makes the diode "resonate", which in the current work's design means it sprays out waves in the terahertz band. Milestone for wi-fi with 'T-rays' 2012-05-16T07:00:35Z These use terahertz rays, which lie between microwaves and infrared radiation on the electromagnetic spectrum. Yes We Scan: Have New Airport Screening Technologies Inspired by 9/11 Made Us Safer? [Slide Show] 2011-09-09T11:45:00.203Z Unfortunately, terahertz waves do not propagate very well through the air, limiting their practical applications. 2011 Lemelson M.I.T. Student Inventor Prizes Offer a Glimpse of the Future in Medical and Security Screening Tech [Slide Show] 2011-03-10T01:45:00.530Z |
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