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Categories: Engineering: Nanotechnology, Paleontology: General

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Chemistry: Inorganic Chemistry Engineering: Nanotechnology
Published

Plumber's nightmare structure in block polymers      (via sciencedaily.com)     Original source 

Scientists solve a long-standing block copolymer research conundrum through polymer chain end modifications. The study garners substantial academic attention by achieving tangible manifestations of intricate polymer structures that were previously solely theoretical.

Biology: Zoology Ecology: Trees Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Dinosaurs Paleontology: Fossils Paleontology: General
Published

Student discovers 200-million-year-old flying reptile      (via sciencedaily.com)     Original source 

Gliding winged-reptiles were amongst the ancient crocodile residents of the Mendip Hills in Somerset, England, researchers at the have revealed.

Biology: Marine Ecology: Extinction Ecology: Sea Life Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: Fossils Paleontology: General
Published

The megalodon was less mega than previously believed      (via sciencedaily.com)     Original source 

A new study shows the Megalodon, a gigantic shark that went extinct 3.6 million years ago, was more slender than earlier studies suggested. This finding changes scientists' understanding of Megalodon behavior, ancient ocean life, and why the sharks went extinct.

Chemistry: Biochemistry Computer Science: General Engineering: Nanotechnology Offbeat: Computers and Math Offbeat: General Physics: General
Published

DNA origami folded into tiny motor      (via sciencedaily.com)     Original source 

Scientists have created a working nanoscale electomotor. The science team designed a turbine engineered from DNA that is powered by hydrodynamic flow inside a nanopore, a nanometer-sized hole in a membrane of solid-state silicon nitride. The tiny motor could help spark research into future applications such as building molecular factories or even medical probes of molecules inside the bloodstream.

Anthropology: General Biology: Biochemistry Biology: Botany Biology: Evolutionary Biology: General Biology: Genetics Biology: Microbiology Ecology: Endangered Species Ecology: Nature Paleontology: General
Published

A window into plant evolution: The unusual genetic journey of lycophytes      (via sciencedaily.com)     Original source 

An international team of researchers has uncovered a remarkable genetic phenomenon in lycophytes, which are similar to ferns and among the oldest land plants. Their study reveals that these plants have maintained a consistent genetic structure for over 350 million years, a significant deviation from the norm in plant genetics.

Chemistry: Biochemistry Engineering: Nanotechnology
Published

Using magnetized neurons to treat Parkinson's disease symptoms      (via sciencedaily.com)     Original source 

Electrical deep brain stimulation (DBS) is a well-established method for treating disordered movement in Parkinson's disease. However, implanting electrodes in a person's brain is an invasive and imprecise way to stimulate nerve cells. Researchers report a new application for the technique, called magnetogenetics, that uses very small magnets to wirelessly trigger specific, gene-edited nerve cells in the brain. The treatment effectively relieved motor symptoms in mice without damaging surrounding brain tissue.

Chemistry: Inorganic Chemistry Engineering: Nanotechnology Offbeat: Computers and Math Offbeat: General Physics: Optics
Published

Researchers create faster and cheaper way to print tiny metal structures with light      (via sciencedaily.com)     Original source 

Researchers have developed a light-based means of printing nano-sized metal structures that is 480 times faster and 35 times cheaper than the current conventional method. It is a scalable solution that could transform a scientific field long reliant on technologies that are prohibitively expensive and slow. Their method is called superluminescent light projection (SLP).

Chemistry: Biochemistry Chemistry: General Chemistry: Inorganic Chemistry Engineering: Nanotechnology Offbeat: General
Published

DNA becomes our 'hands' to construct advanced nanoparticle materials      (via sciencedaily.com)     Original source 

A new paper describes a significant leap forward in assembling polyhedral nanoparticles. The researchers introduce and demonstrate the power of a novel synthetic strategy that expands possibilities in metamaterial design. These are the unusual materials that underpin 'invisibility cloaks' and ultrahigh-speed optical computing systems.

Engineering: Nanotechnology Offbeat: General Offbeat: Space Physics: Optics Space: Astronomy Space: Exploration Space: General Space: Structures and Features
Published

The metalens meets the stars      (via sciencedaily.com)     Original source 

Researchers have developed a 10-centimeter-diameter glass metalens that can image the sun, the moon and distant nebulae with high resolution. It is the first all-glass, large-scale metalens in the visible wavelength that can be mass produced using conventional CMOS fabrication technology.

Engineering: Nanotechnology Physics: Optics
Published

Researchers optimize 3D printing of optically active nanostructures      (via sciencedaily.com)     Original source 

The shape, size and optical properties of 3-dimensional nanostructures can now be simulated in advance before they are produced directly with high precision on a wide variety of surfaces. Nanoprobes or optical tweezers with sizes in the nanometre range are now within reach.

Chemistry: Biochemistry Chemistry: Inorganic Chemistry Engineering: Nanotechnology
Published

New insight into frictionless surfaces is slippery slope to energy-efficient technology      (via sciencedaily.com)     Original source 

Scientists have made an insight into superlubricity, where surfaces experience extremely low levels of friction. This could benefit future technologies by reducing energy lost to friction by moving parts.

Anthropology: Cultures Anthropology: General Archaeology: General Biology: Biochemistry Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

Woolly mammoth movements tied to earliest Alaska hunting camps      (via sciencedaily.com)     Original source 

Researchers have linked the travels of a 14,000-year-old woolly mammoth with the oldest known human settlements in Alaska, providing clues about the relationship between the iconic species and some of the earliest people to travel across the Bering Land Bridge. Isotopic data, along with DNA from other mammoths at the site and archaeological evidence, indicates that early Alaskans likely structured their settlements to overlap with areas where mammoths congregated. Those findings, highlighted in the new issue of the journal Science Advances, provide evidence that mammoths and early hunter-gatherers shared habitat in the region. The long-term predictable presence of woolly mammoths would have attracted humans to the area.

Biology: Biochemistry Biology: Evolutionary Biology: Marine Biology: Zoology Ecology: Research Ecology: Sea Life Paleontology: Early Mammals and Birds Paleontology: Fossils Paleontology: General
Published

Pacific kelp forests are far older that we thought      (via sciencedaily.com)     Original source 

Fossils of kelp along the Pacific Coast are rare. Until now, the oldest fossil dated from 14 million years ago, leading to the view that today's denizens of the kelp forest -- marine mammals, urchins, sea birds -- coevolved with kelp. A recent amateur discovery pushes back the origin of kelp to 32 million years ago, long before these creatures appeared. A new analysis suggests the first kelp grazers were extinct, hippo-like animals called desmostylians.

Biology: Evolutionary Offbeat: General Offbeat: Paleontology and Archeology Offbeat: Plants and Animals Paleontology: General
Published

Feeding mode of ancient vertebrate tested for first time      (via sciencedaily.com)     Original source 

A feeding method of the extinct jawless heterostracans, among the oldest of vertebrates, has been examined and dismissed by scientists, using fresh techniques.

Chemistry: Biochemistry Chemistry: Organic Chemistry Engineering: Nanotechnology
Published

Cryo-microscopy reveals nano-sized copy machine implicated in origin of life      (via sciencedaily.com)     Original source 

RNA is thought to have sparked the origin of life by self-copying. Researchers have now revealed the atomic structure of an 'RNA copy machine' through cryo-EM. This breakthrough sheds light on a primordial RNA world and fuels advancements in RNA nanotechnology and medicine.

Archaeology: General Biology: Biochemistry Biology: General Biology: Marine Ecology: Nature Ecology: Sea Life Paleontology: Climate Paleontology: Fossils Paleontology: General
Published

Key moment in the evolution of life on Earth captured in fossils      (via sciencedaily.com)     Original source 

New research has precisely dated some of the oldest fossils of complex multicellular life in the world, helping to track a pivotal moment in the history of Earth when the seas began teeming with new lifeforms -- after four billion years of containing only single-celled microbes.

Chemistry: Biochemistry Engineering: Graphene Engineering: Nanotechnology
Published

Innovative graphene-based implantable technology paves the way for high-precision therapeutic applications      (via sciencedaily.com)     Original source 

A new study presents an innovative graphene-based neurotechnology with the potential for a transformative impact in neuroscience and medical applications.

Chemistry: Biochemistry Engineering: Nanotechnology Physics: Optics
Published

Light-matter interaction: Broken symmetry drives polaritons      (via sciencedaily.com)     Original source 

An international team of scientists provide an overview of the latest research on light-matter interactions. In a new paper, they provide an overview of the latest research on polaritons, tiny particles that arise when light and material interact in a special way.

Biology: Biochemistry Biology: Cell Biology Biology: Evolutionary Biology: General Biology: Microbiology Biology: Molecular Paleontology: Fossils Paleontology: General
Published

Even the oldest eukaryote fossils show dazzling diversity and complexity      (via sciencedaily.com)     Original source 

The sun has just set on a quiet mudflat in Australia's Northern Territory; it'll set again in another 19 hours. A young moon looms large over the desolate landscape. No animals scurry in the waning light. No leaves rustle in the breeze. No lichens encrust the exposed rock. The only hint of life is some scum in a few puddles and ponds. And among it lives a diverse microbial community of our ancient ancestors.