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Pushing the boundaries of ultrasound imaging: breaking new ground with ultrafast technology

Researchers have enhanced microvascular sensitivity using ultrafast ultrasound, capturing the three-dimensional vascular network of renal arteries and veins without contrast agents. This technique reveals sharp decreases in renal blood flow during acute renal failure and chronic vascular degeneration in diabetic nephropathy.

Generating stable qubits at room temperature

Scientists achieve room-temperature quantum coherence by embedding a chromophore in a metal-organic framework, enabling the creation of quintet state qubits with four electron spins. This breakthrough could lead to the development of multiple qubit systems at room temperature, revolutionizing quantum computing and sensing.

SourceKyushu University·JournalScience Advances·TypeExperimental study·DateJan 11, 2024

New transactions of nonferrous metals society of china study uncovers low-temperature deformation mechanism of pure titanium

Researchers investigate grain size and temperature effects on Ti deformation at extremely low temperatures, finding that cryogenic temperatures trigger deformation twinning, boosting strength and ductility. The study proposes a modified Hall-Petch relationship to explain strengthening mechanisms at cryogenic temperatures.

SourceCactus Communications·JournalTransactions of Nonferrous Metals Society of China·TypeExperimental study·DateJan 10, 2024

PolyU researchers develop nature-inspired advanced materials to achieve 99.6% solar reflectivity

Researchers at PolyU developed a cooling ceramic with a hierarchically porous structure, inspired by the whitest beetle, to achieve high solar reflectivity and efficient light scattering. This innovation has potential energy-saving applications and is the first study on the Leidenfrost effect in passive radiative cooling materials.

SourceThe Hong Kong Polytechnic University·JournalScience·TypeExperimental study·DateJan 3, 2024

Using static electricity to enhance biomedical implant durability

A research team developed electrostatic materials capable of responding to weak ultrasound, generating static electricity for implantable neurological stimulators. The technology eliminates the need for batteries, reduces device size, and minimizes strain on the human body. Experimental validation confirms its effectiveness in animal m...

Piezo composites with carbon fibers for motion sensors

Researchers at Tohoku University have engineered a novel device combining piezoelectric composites with carbon fibers, transforming kinetic energy into electricity for efficient motion sensing. The new device has been tested to withstand over 1000 stretches and surpasses other materials in terms of energy output density.

SourceTohoku University·JournalSmall·DateDec 28, 2023

HKU Mechanical Engineering Scientists hail breakthrough in cell and tissue mechanics, enhancing understanding of organ formation and embryogenesis

A research team led by Professor Yuan Lin has made a major breakthrough in showing how plastic strain develops in individual cells and propagates within the tissue. The study reveals the biophysical mechanisms behind cellular and tissue plasticity at different scales, providing critical insights for regenerative medicine.

SourceThe University of Hong Kong·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateDec 19, 2023

Polaritons open up a new lane on the semiconductor highway

Purdue University researchers have found that polaritons can contribute a larger share of thermal conductivity in semiconductors, overcoming phonon limitations. By understanding how to design materials and structures, manufacturers can incorporate these polariton-based nanoscale heat transfer principles into chip designs.

SourcePurdue University·JournalJournal of Applied Physics·DateDec 7, 2023

A novel lightweight wearable device to perform balance exercises at home

Researchers developed a lightweight wearable balance exercise device to improve reactive postural control in older adults, reducing the risk of falls. The device uses pneumatic artificial muscles to generate unexpected perturbations, resulting in improved peak displacement and velocity.

SourceTokyo University of Science·JournalIEEE Journal of Translational Engineering in Health and Medicine·TypeExperimental study·DateNov 27, 2023

Autonomous excavator constructs a 6-meter-high dry-stone wall

Researchers at ETH Zurich developed an autonomous excavator called HEAP to construct a 6-meter-high and 65-meter-long dry-stone wall. The excavator uses sensors, machine vision, and algorithms to place stones in the desired location, achieving a high level of precision and speed.

SourceETH Zurich·JournalScience Robotics·TypeExperimental study·DateNov 22, 2023

HKU Engineering ‘Super Steel’ team develops new ultra stainless steel for hydrogen production

The University of Hong Kong's 'Super Steel' team has developed a novel stainless steel with superior corrosion resistance, enabling its potential application in green hydrogen production from seawater. The new steel exhibits comparable performance to current industrial practices using Titanium while being much cheaper.

SourceThe University of Hong Kong·JournalMaterials Today·TypeExperimental study·DateNov 17, 2023

Understanding the dynamic behavior of rubber materials

A team of researchers has developed a novel experimental system to simultaneously measure the mechanical properties and internal structure of rubber-like materials. The study found that strain within these materials is non-uniform, depending on the shape and size of composite particles.

SourceWaseda University·JournalMechanical Systems and Signal Processing·TypeImaging analysis·DateNov 9, 2023

Using sound to test devices, control qubits

Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed a system that uses atomic vacancies in silicon carbide to measure the stability and quality of acoustic resonators, which could improve communications and offer new control for quantum computing. The technique also allows for acoustically-c...

CityU joint research creates 3D-printed aluminium alloy with unprecedented fatigue resistance

A team of researchers from City University of Hong Kong and Shanghai Jiao Tong University has developed a novel aluminium alloy with unprecedented fatigue resistance using advanced 3D printing techniques. The new alloy, called NTD-Al, surpasses the fatigue strength of high-strength wrought Al alloys and conventional metals.

SourceCity University of Hong Kong·JournalNature Materials·TypeExperimental study·DateOct 24, 2023

New study unveils stretchable high-resolution user-interactive synesthesia displays for visual–acoustic encryption

A research team at UNIST has developed a groundbreaking stretchable high-resolution multicolor synesthesia display that generates synchronized sound and light. This technology shatters preconceived boundaries in multifunctional displays, offering unparalleled optical performance and precise sound pressure levels.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalAdvanced Functional Materials·DateOct 12, 2023

Unlocking innovation: Multistable mechanical metamaterials’ evolution in design, manufacturing, and applications

Multistable mechanical metamaterials can switch between multiple stable configurations under external loading, making them reusable and efficient for quick action. Their unique properties make them promising for various engineering applications, including energy absorption, soft actuators/robots, and wave control.

SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateOct 10, 2023