Linear polarization holography
In conventional holography, the hologram is formed by recording the interference fringes of two coherent beams using a photosensitive material. The amplitude and phase information of the original signal wave can be reconstructed correctly when readin.....»»
Like a natural system, democracy faces collapse as polarization leads to loss of diversity
Much like an overexploited ecosystem, the increasingly polarized political landscape in the United States—and much of the world—is experiencing a catastrophic loss of diversity that threatens the resilience not only of democracy, but also of soci.....»»
Two-dimensional bipolar magnetic semiconductors with electrically controllable spin polarization realized
Two dimensional (2D) magnetic semiconductors, integrating semiconductivity, ferromagnetism and low dimensionality, serve as the cornerstone for high-speed nanospintronic devices. However, the practical applications of nowadays 2D magnetic semiconduct.....»»
Three-dimensional imaging with optical frequency combs
Holography is a powerful technique of photography of a light field without a lens for 3D imaging and display. Now, scientists at the Max-Planck Institute of Quantum Optics are moving holography forward by implementing it with optical frequency combs......»»
High-speed holography of cells spots physical beacons of disease
Biomedical engineers have engineered a holographic system capable of imaging and analyzing tens of thousands of cells per minute to both discover and recognize signs of disease......»»
Safely delivering radiation to cancer patients in a "FLASH"
Researchers at Lawrence Livermore National Laboratory (LLNL) have shown for the first time the potential for linear induction accelerators (LIAs) to deliver effective, targeted doses of "FLASH" radiation to cancer patients. The new technique selectiv.....»»
High-speed holography of cells spots physical beacons of disease
Biomedical engineers at Duke University have engineered a holographic system capable of imaging and analyzing tens of thousands of cells per minute to both discover and recognize signs of disease......»»
Recent advances in optical dynamic meta-holography
In a new publication from Opto-Electronic Advances the research group of Professor Xiong Wei, from Huazhong University of Science and Technology, Wuhan, China, discuss recent advances in optical dynamic meta-holography......»»
On-chip frequency shifters in the gigahertz range could be used in next generation quantum computers and networks
The ability to precisely control and change properties of a photon, including polarization, position in space, and arrival time, gave rise to a wide range of communication technologies we use today, including the Internet. The next generation of phot.....»»
Researchers find fake news about controversial topics contributes to political polarization
It's been a year since America experienced one of its most divisive elections in decades. Although President Joe Biden has called for unity, recent data from a new measurement, the USC Polarization Index, has shown political polarization remains as b.....»»
A strategy to control the spin polarization of electrons using helium
Spintronics, also known as spin electronics, is a research field that explores how the intrinsic spin of electrons and its magnetic moment can be exploited by devices. Spintronic devices are promising for a wide range of applications, particularly fo.....»»
Flexciton optimizes wafer fab scheduling to improve production efficiency
Flexciton, a UK-based software startup, deployed its production scheduling optimization software in Seagate's factory in Derry, Northern Ireland. The software is based on mixed-integer linear programming (MILP), which is more advanced than other mach.....»»
"Affective polarization" increasingly leaks into social situations, says new study
Partisanship is a particularly potent source of group identity in contemporary American politics, and a new paper co-written by a University of Illinois Urbana-Champaign expert in political psychology says the growing chasm between opposing groups is.....»»
Study provides insight into how we sense threats in our environment
Researchers at the University of Toronto have shown that our ability to quickly assess threats in our environment comes from our perception of discrete linear features in a scene rather than details or objects within it......»»
New game can help users identify, avoid online echo chambers
Every day, social media users are exposed to fake news and political polarization on social networks. What makes people vulnerable to believing false information they find online?.....»»
Controlling electrons and vibrations in a crystal with polarized light
The quantum behavior of atomic vibrations excited in a crystal using light pulses has much to do with the polarization of the pulses, say materials scientists from Tokyo Tech. The findings from their latest study offer a new control parameter for the.....»»
Transitioning urban economy from linear to circular
Transitioning to a circular economy and utilizing resources efficiently in cities is necessarily a collaborative effort. We interviewed two experts, Jaana Pelkonen and Heikki Sorasahi, to learn what they thought are the things to consider in addressi.....»»
Technological breakthrough in energy-efficient particle accelerators
At Technische Universität Darmstadt, the world's first operation of a multi-turn superconducting linear accelerator with significant energy recovery succeeded. The experiment at the university's electron linear accelerator (S-DALINAC) proved that a.....»»
Political bias on social media emerges from users, not platform
In this era of political polarization, many accuse online social media platforms such as Twitter of liberal bias, intentionally favoring and amplifying liberal content and users while suppressing other political content......»»
Light computes any desired linear transform without a digital processor
Different forms of linear transformations, such as the Fourier transform, are widely employed in processing of information in various applications. These transformations are generally implemented in the digital domain using electronic processors, and.....»»
Common-path off-axis digital holography: Towards high stable optical instrument manufacturing
High stable common-path digital holographic interferometers can be widely applied in long-term time-lapsing interferometric measurements, three-dimensional imaging, and quantitative phase imaging. Scientists in China reviewed the common-path off-axis.....»»