The investigation of systems comprised of self-propelled particles, known as active particles, has become an area of intense research. In theoretical models, it is commonly assumed that the swimming speed of these particles remains constant. However, in experimental scenarios such as ultrasound propulsion for medical applications, the speed of particles can vary depending on their
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Radar technology has become an integral part of our daily lives, from monitoring the speed of cars to tracking satellites in the sky. At the heart of radar systems is the Doppler effect, which explains how waves change their frequency when a source and a detector are in motion relative to each other. However, traditional
In the realm of optics, it is generally expected that the brighter the light source used, the brighter the resulting image will be. This principle holds true for ultra-short pulses of laser light as well, but only up to a certain intensity. Recently, a puzzling phenomenon was observed in X-ray diffraction images, where the images
In the late seventeenth century, Antonie van Leeuwenhoek’s discovery of bacteria under a microscope marked a pivotal moment in the exploration of the infinitesimally small. Since then, scientists have been striving to delve deeper into the microscopic world. However, traditional optical methods have imposed physical limitations on our ability to examine objects closely. This limitation,
In today’s data-driven era, we face an overwhelming deluge of information. The massive amount of data that needs to be stored and processed requires data centers to consume a significant amount of electricity. Unfortunately, this has led to concerns about environmental pollution, as the energy consumption of data centers has been identified as a major
In a groundbreaking study published in Physical Review A on September 28, 2023, a collaborative group of researchers unveiled the manipulation of light behavior resembling the influence of gravity. This discovery has profound implications for the realms of optics, materials science, and the future of 6G communications. Drawing inspiration from Albert Einstein’s theory of relativity,
The concept of superconductivity, which refers to the ability of certain materials to conduct an electrical current with minimal to no resistance, has captured the attention of scientists and researchers worldwide. The potential applications of superconductivity are vast, as it could revolutionize electronic devices and energy systems. Recent efforts by condensed-matter physicists and material scientists
As the COVID-19 pandemic took hold and people across the globe sought shelter in their homes, a few scientific minds began pondering the nature of droplet size and its implications for airborne disease transmission. One such pair of researchers, Christopher Pöhlker and his wife, Mira, recognized the scarcity of research on respiratory droplet size and
In the realm of physics, there are certain problems that seem impossible to solve using conventional approaches. However, researchers at the University of Cambridge have demonstrated that simulating models of hypothetical time travel may offer a solution. By manipulating entanglement, a fundamental feature of quantum theory, scientists have explored the potential outcomes if time travel
Researchers at Huazhong University of Science and Technology in China have made a significant advancement in optical chip technology with the development of a self-configurable optical chip. This innovative chip has the potential to be used in applications that require optical neural networks, such as image classification, gesture interpretation, and speech recognition. Unlike previous photonic