Tag

Mechanical Properties

All articles tagged with #mechanical properties

science4 hours ago•21 min saved

Bulk hexagonal diamond emerges from graphite under high pressure, resolving a long-standing debate

A Nature study reports the synthesis of millimeter-sized, phase-pure bulk hexagonal diamond (HD) from highly oriented pyrolytic graphite under high-temperature, high-pressure conditions, with structural and computational confirmation. HD shows slightly higher hardness than cubic diamond and strong thermal stability, resolving the long-standing question of HD’s existence and offering new insight into graphite-to-diamond transformation and potential applications in advanced technologies.

via Nature|

#graphite-to-diamond-transition #hexagonal-diamond #high-pressure-high-temperature-synthesis

science-and-technology2 years ago•6 min saved

"Kirigami: Ancient Japanese Art Inspires Ultrastrong, Lightweight Engineering Materials"

MIT engineers have used the ancient Japanese art of kirigami to create high-performance architected materials called plate lattices. By modifying a common origami crease pattern, the researchers were able to fabricate ultralight and ultrastrong structures from metal or other materials with custom shapes and tailored mechanical properties. The kirigami technique allows for the mass production of these structures, making them potentially useful in architectural, airplane, automotive, or aerospace components. The researchers also plan to develop user-friendly CAD design tools for these structures and explore methods to reduce computational costs for simulating desired properties.

via MIT News|

#architected-materials #kirigami #lightweight-structures

science-and-technology2 years ago•2 min saved

Unveiling the Unexpected Capabilities of the Cytoskeleton: Nature's High-Tech Marvel

Researchers at the University of Göttingen and ETH Zurich have discovered surprising properties of the cytoskeleton, specifically the two types of intermediate filaments found in mobile and stationary cells. Using optical tweezers, they found that vimentin filaments become softer and retain their length when stretched, while keratin filaments become longer and retain their stiffness. The results provide insights into the mechanical properties of different cell types and could inspire the design of new sustainable materials with tailored properties.

via SciTechDaily|

#biomaterials #cytoskeleton #intermediate-filaments

science-and-technology2 years ago•4 min saved

MIT Develops Faster and More Efficient Method for Integrating 2D Materials onto Silicon Circuits.

Researchers have developed a method to retain the mechanical properties of 2D polymers called covalent organic frameworks (COFs) when stacked in multiple layers, creating a lightweight material that is several times stronger than steel. Potential applications include filtration membranes and upgraded batteries. The research could also impact the design of ceramics and metals, potentially enabling their manufacturing and repair at lower temperatures. The findings are detailed in a new study published in Proceedings of the National Academy of Sciences.

via SciTechDaily|

#2d-materials #covalent-organic-frameworks #hydrogen-bonding