New epoch of miniaturized Cherenkov detectors

Asia's Tech News Daily

Cherenkov radiation refers to the photon emission from the swift charged particle moves with the velocity greater than the phase velocity of light in the surrounding materials. Ever since its experimental observation by a Soviet physicist P.A. Cherenkov in 1934, Cherenkov radiation has been widely explored and applied in many research fields ranging from cosmology and information, to medical and life science. Among all these applications, the detection of high-energy particles (i.e. identifying the type of detected particles from the direction of the photon emission) is the most important one.

With the help of Cherenkov radiation, scientists discovered many elementary particles including anti-proton and J-particle. Owing to its impacts on both the fundamental research and practical applications, Cherenkov radiation and its related applications were awarded at least six Nobel Prizes in Physics (in 1958, 1959, 1988, 1995, 2002 and 2015, respectively).

Although Cherenkov detectors are widely used in the high-energy and particle physics, their bulky sizes hinder their applications to emerging research fields such as particle detection on chip. Thus, achieving miniaturized particle detectors could potentially broadens the applications of Cherenkov detection. Surface waves propagating at the interface of two different materials provide a possible solution towards this goal.

Generally speaking, there are two major branches of surface waves in nature: 1, surface plasmons propagating along the metallodielectric interface; 2, Dyakonov surface waves propagating along the surface of a birefringent material.

Since 1950s, surface plasmons have been widely applied to surface-enhanced Raman spectroscopy, surface-enhanced sensing, and surface-enhanced fluorescence, etc. Recently, surface plasmons were deployed to enhance Cherenkov radiation and achieve integrated Cherenkov light sources.

Nevertheless, the implementation of a miniaturized Cherenkov detector with surface plasmons is still challenging, mainly due to following two reasons:

1. the significant metallic dissipation hinders the detection of Cherenkov signals in the far field;

2. the strong chromatic dispersion of plasmons present an inherent limit on the working bandwidth of the detector.

On the contrary, Dyakonov surface waves can be excited in an all-dielectric platform with negligible dissipation loss and weak chromatic dispersion. Despite of these advantages, applications of Dyakonov surface waves have been thus far quite limited, due to the lack of efficient excitation mechanism.

This research team led by Prof. Yu Luo from Nanyang Technological University has uncovered a new type of free-electron radiations, namely surface Dyakonov-Cherenkov radiation. It is achieved by exploring the interaction between the free charged particle and Dyakonov surface waves. Such a discovery not only facilitates the development of miniaturized Cherenkov detectors, but may also inspires future explorations of Dyakonov surface waves.

The research team investigated the emission behaviors of a swift charged particle moving atop the surface of a birefringent crystal. They found that when the particle velocity and trajectory fulfill a specific condition, the swift charged particle allows for efficient photon emission in terms of Dyakonov surface waves.

The surface Dyakonov-Cherenkov radiation is one of the best candidates to achieve miniaturized particle detectors on chip. First, Dyakonov surface waves can significantly enhance the photon emission, offering a feasible route to reduce the interaction length of the swift charged particle and matters. Second, due to the negligible dissipation loss and weak chromatic dispersion of Dyakonov surface waves, the emitted photons can be readily collected in the far field.

Remarkably, the research team also found that the excitation of surface Dyakonov-Cherenkov radiation is highly sensitive to both the particle trajectory and velocity value. Only when the particle trajectory falls within the vicinity of a particular direction, the surface Dyakonov-Cherenkov radiation is allowed. Such a unique property results from the directional nature of Dyakonov surface waves. It allows the surface Dyakonov-Cherenkov radiation to detect the particle trajectory, with the accuracy up to 10 mrad.

The surface Dyakonov-Cherenkov radiation studied in this work also bridges the research gap between Cherenkov radiation and Dyakonov surface waves, and may produce far-reaching impacts on both areas. In the realm of Cherenkov radiation, this work not only facilitates the development of next-generation miniaturized Cherenkov detectors, but also offers a unique technique to track and collimate the particle beams, which is highly desired in nonlinear, ultrafast and quantum optics. In the realm of Dyakonov surface waves, the efficient excitation mechanism revealed in this work may open a new research area of Dyakonov surface optics.

Research Report: “Surface Dyakonov-Cherenkov radiation”

Internet Explorer Channel Network
Asia's Tech News Daily
News Related


Too much heavy metal stops stars producing

Stars are giant factories that produce most of the elements in the Universe – including the elements in us, and in the Earth’s metal deposits. But what stars produce changes ... Read more »

Deciphering conditions around the Sun five million years ago

Using high-resolution data obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope, Wesleyan University Professor of Astronomy Seth Redfield can show the conditions the Sun encountered traveling ... Read more »

Researchers Observe Massive CME on Distant, Sun-Like Star

EK Draconis illuminates an unimagined picture of how superflares may affect interplanetary space through coronal mass ejections Welcome to the New Year! While Earth celebrated 2022’s arrival with displays of ... Read more »

North Pole solar eclipse excited auroras on the other side of the world

A solar eclipse over the Arctic created changes in auroras in both of Earth’s hemispheres due to connections through the planet’s magnetic field, according to a new study. The new ... Read more »

Increased space missions risk extraterrestrial contamination

The days of the U.S.-Soviet Space Race are over, and the domain of space exploration is expanding daily to include more countries than ever before. With the advent of private ... Read more »

Planet to launch 44 SuperDove satellites on SpaceX's Falcon 9

Planet Labs PBC reports announced that the launch of their Flock 4x, consisting of 44 SuperDove satellites, will take place on Thursday, January 13th on SpaceX’s Falcon 9 Transporter-3 SSO. ... Read more »

Mangata Networks announces funding for satellite edge computing network

Mangata Networks has closed a $33 million Series A round led by US-based venture capital firm Playground Global to continue its mission to transform the way the world interacts with ... Read more »

Advances in Space Transportation Systems Transforming Space Coast

From a seaside perch overlooking the hustle and bustle of ships coming and going at Port Canaveral on Florida’s east coast, Dale Ketcham reflects on decades of history with nostalgia. ... Read more »

Indian Space Agency tests cryogenic engine for its first-ever manned mission

India’s flagship human spaceflight mission, Gaganyaan, has completed the design and testing phases. The Indian Space Research Organisation (ISRO) plans to launch two uncrewed missions ahead of the final mission ... Read more »

Manufacturing revenues for Earth observation to grow to $76.1 billion by 2030

Euroconsult, the leading space consulting and market intelligence firm, has released its eagerly awaited ”Earth Observation Satellite Systems Market” report, providing a sweeping review analysis of the Earth Observation (EO) ... Read more »

NASA's new IXPE mission begins science operations

NASA’s newest X-ray eyes are open and ready for discovery! Having spent just over a month in space, the Imaging X-ray Polarimetry Explorer (IXPE) is working and already zeroing in ... Read more »

Ride into space on Vega-C secured for FLEX and Altius

A contract signed with Arianespace secures the joint launch for two satellites that will further knowledge of our home planet. Scheduled to lift off on a new class of rocket, ... Read more »

The Incredible ASIM: Distant galaxy edition

The Atmosphere-Space Interactions Monitor, or ASIM for short, is a first-of-its-kind complement of instruments on the International Space Station. Dubbed the ‘space storm hunter’, ASIM measures electric events in Earth’s ... Read more »

From dust to planet: how gas giants form

Gas giants are made of a massive solid core surrounded by an even larger mass of helium and hydrogen. But even though these planets are quite common in the Universe, ... Read more »

SDSS-V robots turn their eyes to the sky

After twenty-one years of observers loading heavy aluminum plates night after night, the Sloan Digital Sky Survey (SDSS) is now seeing the cosmos through robotic eyes. Following more than five ... Read more »

Cheops reveals a rugby ball-shaped exoplanet

ESA’s exoplanet mission Cheops has revealed that an exoplanet orbiting its host star within a day has a deformed shape more like that of a rugby ball than a sphere. ... Read more »

Advertising plays key role in satellite TV success, study shows

The pay television market in the United States was dominated by a handful of cable operators until the early 1990s with the entry of satellite TV, which has grown consistently ... Read more »

Elusive atmospheric molecule produced in a lab for the 1st time by UH

The previously elusive methanediol molecule of importance to the organic, atmospheric science and astrochemistry communities has been synthetically produced for the first time by University of Hawai?i at Manoa researchers. ... Read more »

Astroscale U.S. and Orbit Fab sign first on-orbit satellite fuel sale agreement

Orbit Fab, the Gas Stations in Space refueling service provider and Astroscale U.S. Inc., the U.S. subsidiary of Astroscale Holdings Inc. and market leader in securing long-term orbital sustainability, has ... Read more »

ASU instrument captures breathtaking 'first light' images

ASU scientists and engineers building the Europa Thermal Emission Imaging System (E-THEMIS) for NASA’s Europa Clipper passed a major hurdle recently by capturing the first successful test images from this ... Read more »

Astronomers identify potential clue to reinonization of universe

About 400,000 years after the universe was created began a period called “The Epoch of Reionization.” During this time, the once hotter universe began to cool and matter clumped together, ... Read more »

Mini monster black hole could hold clues to giant's growth

The discovery of a supermassive black hole in a relatively small galaxy could help astronomers unravel the mystery surrounding how the very biggest black holes grow. Researchers used NASA’s Chandra ... Read more »

Simulated Image Shows How NASA's Roman Could Expand on Hubble's Deepest View

A team of astrophysicists has created a simulated image that shows how the Nancy Grace Roman Space Telescope could conduct a mega-exposure similar to but far larger than Hubble’s celebrated ... Read more »

Ocean Physics Explain Cyclones on Jupiter

Hurtling around Jupiter and its 79 moons is the Juno spacecraft, a NASA-funded satellite that sends images from the largest planet in our solar system back to researchers on Earth. ... Read more »

Gilmour Space fires up for 2022 with Australia's largest rocket engine test

Rocket engineers at Gilmour Space Technologies have greeted the new year with a successful 110-kilonewton test fire of the most powerful rocket engine ever developed in Australia. The 75-second test ... Read more »

Prestwick Spaceport Files Planning Application Notice

South Ayrshire Council has started the process of submitting a formal planning application for the Prestwick Spaceport development. The Proposal of Application Notice (POAN) is the first step in the ... Read more »

Life could be thriving in the clouds of Venus

by Eric Verbeten for WISC News Is there life on Venus? For more than a century, scientists have pondered this question. Now, there is renewed interest in Venus as a ... Read more »

How the Earth's tilt creates short, cold January days

As the Earth orbits the sun, it spins around an axis – picture a stick going through the Earth, from the North Pole to the South Pole. During the 24 ... Read more »

NASA's newest astronaut class begins training in Houston

NASA swore in 10 new astronaut candidates Monday at Johnson Space Center in Houston — six men and four women — who someday may walk on the moon or Mars. ... Read more »

Shouzhou XIII crew finishes cargo spacecraft, space station docking test

The Shenzhou XIII astronauts in China’s space station core module have completed the manual rendezvous and docking experiment with the Tianzhou 2 cargo craft, the China Manned Space Agency (CMSA) ... Read more »

Take-Two to buy 'Farmville' creator Zynga for $12.7 bn

Video game publisher Take-Two announced Monday it reached a deal to acquire “Farmville” creator Zynga for $12.7 billion, in a major mobile gaming push by the maker of “Grand Theft ... Read more »

Hubble sees cosmic clues in a galactic duo

This spectacular image from the NASA/ESA Hubble Space Telescope captures the spiral galaxy NGC 105, which lies roughly 215 million light-years away in the constellation Pisces. While it looks like ... Read more »

Eccentric exoplanet discovered

Led by the University of Bern, an international research team has discovered a sub-Neptune exoplanet orbiting a red dwarf star. The discovery was also made thanks to observations performed by ... Read more »

Real-time alert system heralds new era in fast radio burst research

McGill University scientists have developed a new system for sharing the enormous amount of data being generated by the CHIME radio telescope in its search for fast radio bursts (FRBs), ... Read more »

NASA to host coverage for Webb Telescope's final unfolding

NASA will provide live coverage and host a media briefing Saturday, Jan. 8, for the conclusion of the James Webb Space Telescope’s major spacecraft deployments. Beginning no earlier than 9 ... Read more »

Loft Orbital extends production agreement with LeoStella

Loft Orbital Solutions, Inc. (Loft Orbital), a leading space infrastructure-as-a-service provider, and LeoStella, Inc., a specialized satellite constellation design and manufacturing company, have extended their production agreement to secure multiple ... Read more »

Asteroid with a refreshed surface

How did our Solar System form and evolve? Various models for the creation of our system of planets have been proposed, but the planets themselves provide unfortunately little information as ... Read more »

Arianespace consolidates leadership in commercial market with 15 Ariane, Soyuz and Vega launches in 2021

Arianespace confirmed its strong performance in 2021, with 15 successful launches – five more than in 2020 – and 305 satellites sent into orbit using its three launchers, Ariane, Soyuz ... Read more »

Debris from failed Russian rocket falls into sea near French Polynesia

The upper stage of a failed Russian Angara A5 rocket plummeted uncontrolled to Earth, crashing into open sea near French Polynesia. The U.S. 18th Space Control Squadron confirmed the 4 ... Read more »

Metaverse gets touch of reality at CES

A jacket equipped with sensors that let wearers feel hugs or even punches in virtual reality was among the innovations giving the metaverse a more realistic edge at the Consumer ... Read more »
On you will find lots of free English exam practice materials to help you improve your English skills: grammar, listening, reading, writing, ielts, toeic