All articles tagged with #metamaterials
Physicists have experimentally confirmed the long-standing theoretical prediction of 'time mirrors' by reversing electromagnetic waves in time through engineered temporal boundaries in metamaterials, opening new avenues for wave control and potential applications in spectrum engineering and quantum technologies.
Scientists at CUNY successfully reversed electromagnetic waves in time using engineered metamaterials, demonstrating a phenomenon previously thought impossible, which could lead to advancements in wave-based technologies.
Researchers at the University of Leicester have developed a new, practical method for creating magnetic cloaks around objects of complex shapes using existing materials, moving the concept of invisibility closer to real-world applications in technology and industry.
Scientists in New York City have successfully observed time reflections, a phenomenon where electromagnetic waves are reversed in time, using engineered metamaterials and electronic switches, opening new possibilities for wireless communication and wave-based computing.
Researchers are exploring five advanced materials—metamaterials, graphene, MXene, carbon nanotubes, and ceramics—that could significantly enhance aircraft stealth capabilities by absorbing or deflecting radar signals, potentially making fighter jets nearly invisible to radar in the future.
Researchers have developed layered multicolor metalenses using stacked metamaterials that can focus multiple wavelengths simultaneously, overcoming the limitations of single-layer lenses. This innovative design is easy to manufacture, polarization insensitive, and scalable, with potential applications in compact, high-performance optical devices for drones, smartphones, and other portable technologies.
MIT researchers have developed a shape-changing, reconfigurable antenna using metamaterials that can adjust its frequency range by stretching, bending, or compressing, enabling versatile applications in communication and sensing without complex moving parts.
Scientists in New York City have experimentally confirmed the existence of time reflections—an elusive phenomenon where electromagnetic waves are reversed in time—using engineered metamaterials that can rapidly change their properties, opening new possibilities for wireless communication and wave-based computing.
Physicists have experimentally confirmed the existence of 'time mirrors,' devices that can reverse wave signals in time using engineered metamaterials, marking a significant breakthrough in wave manipulation and opening new possibilities for communication, imaging, and understanding time in physics.
Researchers from the University of Amsterdam have demonstrated the unique behavior of topological solitons in a robotic metamaterial, showing that they can be harnessed through non-reciprocal interactions to control the movement of robots, sense their surroundings, and communicate. The solitons, which behave like particles but retain their shape and cannot disappear, are being studied for their potential applications in materials science, robotics, and engineering, offering new possibilities for self-propelled motion and advanced functionality.
Researchers from RMIT University have developed a new 3D printed titanium lattice structure that is 50% stronger than the strongest alloy with similar density used in aerospace applications. The structure, a metamaterial, was created using a hollow-strut lattice design and additive manufacturing-driven approach, enabling it to evenly distribute load stress and enhance its strength and structural efficiency. The material offers potential applications in medical implants and aerospace components, and the researchers plan to further optimize it for higher-temperature environments. This development showcases the potential of 3D printing in creating highly durable metal lattices, with other research teams also exploring similar applications.
MIT engineers are conducting high-speed experiments to test the resilience of microscopic metamaterials against supersonic impacts, finding that specific microstructures outperform solid materials in resisting such impacts. By firing microparticles at supersonic speeds, the team identified metamaterial architectures that are more resilient to impacts, with some structures being able to withstand impacts up to twice as much as bulk material. The researchers hope to use this rapid testing method to identify new metamaterial designs for stronger and lighter protective gear, garments, coatings, and paneling.
Researchers at Aalto University have developed a new optical metamaterial leveraging the nonreciprocal magnetoelectric effect, which allows for the creation of true one-way glass. This metamaterial, published in Nature Communications, can be fabricated using existing technology and conventional materials, unlike previous approaches. The potential applications of this technology include creating windows that provide one-way visibility regardless of external brightness, as well as improving the efficiency of solar cells by blocking thermal emissions.
Researchers from TU Delft have developed an AI tool that can discover and design realistic "metamaterials" with extraordinary properties, making them fabrication-ready and durable. These metamaterials, whose properties are determined by their structure rather than molecular composition, can exhibit unnatural and extreme properties, such as behaving like a fluid despite being solid. The AI tool uses deep-learning models to solve the complex "inverse problem" of finding the geometry that gives rise to desired properties, bypassing previous simplifying assumptions. This breakthrough could lead to new applications in orthopedic implants, surgical instruments, soft robots, adaptive mirrors, and exo-suits.
Scientists at NASA Ames Research Center and Stanford University are exploring the concept of "zero mass exploration" for space missions by using self-replicating machines, reprogrammable metamaterials, and prefabricated "voxels" as building blocks. These voxels, made with a carbon-fiber-reinforced polymer, can be autonomously assembled by robots to create strong truss structures that are incredibly light. This technology could potentially revolutionize space exploration by significantly reducing the weight and cost of sending supplies and gear to other planets.