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Max-Planck-Gesellschaft


Hairy feet stick better to wet ceilings

Geckos' hairy feet exhibit an extreme adhesive ability due to a 'dry' system that uses water. The researchers found that increased air humidity strengthens the capillary forces between spatulae and substrates, enabling geckos to stick better on wet ceilings.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateNov 9, 2005

Organised wind chaos on Jupiter

Jupiter's atmosphere is driven by heat from within the planet, creating organized wind chaos. The computer models explain why there are two classes of jet winds: strong and narrow near the equator, but weak and wide at higher latitudes due to the planet's curvature and rotation.

SourceMax-Planck-Gesellschaft·JournalNature·DateNov 9, 2005

Quantum chaos

Scientists have found experimental evidence of quantum chaos in a system with freely dispersing components. The researchers replicated an historical experiment, demonstrating photoelectric effect and observing Ericson fluctuations.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateNov 4, 2005

Forgotten by evolution?

Scientists discovered that some adult stem cells express characteristics of muscle and heart cells, suggesting they could be the 'footprints' of evolution. The researchers believe these cells may be incomplete or 'rudiments' of earlier embryonal differentiation processes.

SourceMax-Planck-Gesellschaft·JournalMolecular and Cellular Biology·DateNov 2, 2005

Even 'failed stars' form planets

A team of astronomers investigated six young brown dwarfs and found that dust particles in their circumstellar discs stuck together, forming larger clumps of olivine. This material is also found in comets and normal stars, suggesting a similar growth process in planet formation

SourceMax-Planck-Gesellschaft·JournalScience·DateOct 25, 2005

Take two!

Researchers have identified two protein kinases, STN7 and STN8, responsible for regulating short-term and long-term adaptations in plant photosynthesis. The discovery provides new insights into the regulation of photosynthetic proteins and has significant implications for understanding plant adaptation to changing light conditions.

SourceMax-Planck-Gesellschaft·JournalNature·DateOct 19, 2005

Life in deadly conditions

The study of Natronomonas pharaonis reveals its unique ability to thrive in extremely alkaline and salty environments. The organism's genome encodes the synthesis of 2,843 proteins, which are stable even at high salt concentrations.

SourceMax-Planck-Gesellschaft·JournalGenome Research·DateOct 17, 2005

What mutations tell us about protein folding

Small single-domain proteins, often referred to as 'two-state folders', fold into their three-dimensional structures by crossing only a single barrier. A new interpretation of mutational data suggests that this process involves a fully formed helix in the transition state.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateOct 14, 2005

How to braid nanoropes

Researchers at the Max Planck Institute of Colloids and Interfaces investigated the assembly of filament networks and bundles. They found that thermal motion prevents bundle formation unless crosslinker concentration exceeds a certain threshold value.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateOct 14, 2005

Atoms under control

Researchers at the Max Planck Institute have cooled single rubidium atoms in an optical resonator for up to 17 seconds, a record-breaking achievement. This milestone demonstrates the potential of atomic manipulation for quantum computing applications.

SourceMax-Planck-Gesellschaft·JournalNature Physics·DateOct 11, 2005

Mother-of-pearl in highest resolution

Researchers at Max Planck Institute have found that the surface of lime platelets in mother-of-pearl is disordered and wavy, ruling out ordered layers on the organic matrix. This discovery challenges previous understanding of nacre's composition and mechanism, offering new insights into building materials.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateOct 5, 2005

Climate change more rapid than ever

Climate models predict a rapid increase in global temperatures and sea level rise of up to 30cm, with severe consequences for agriculture, ecosystems, and extreme weather events. The study also highlights the impact of human activity on the climate, fuelling global warming.

A biomolecule as a light switch

Scientists have discovered how a biomolecule can act as a light switch, revealing its potential for high-resolution microscopy and optical data storage. The protein, asFP595, switches between fluorescent and non-fluorescent states using a tiny molecular mechanism.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateSep 29, 2005

A slight difference and significant similarities

A study compared genetically modified Desirée potatoes with five conventional varieties, revealing a surprising range of variation in substance content. The analyses found that the genetically modified lines exhibited similar variation to the conventional varieties, except for higher inulin polysaccharide content.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateSep 26, 2005

Formula against infertility

Researchers have made significant progress in understanding stem cells and their role in reproduction and the nervous system. Studies suggest that therapeutic cloning may become unnecessary once body cells can be re-programmed into stem cells.

Tracking the riddle of cosmic gamma rays

The MAGIC telescope has tracked a long duration gamma-ray burst, GRB050713A, in the X-ray and very high energy gamma ray band. The observation was made possible by rapid tracking of the telescope, which allowed it to start observing the source just 20 seconds after an alert from the Swift satellite.

Good connections are everything

Scientists at Max Planck Institute discovered that activity patterns on scale-free networks have unusual dynamic properties, robust against random perturbations but sensitive to selective ones. These networks can store and retrieve fixed patterns, making them suitable for associative memories and pattern recognition.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateJul 12, 2005

Motor transport in bio-nano systems

Researchers modelled and simulated motor traffic to determine optimal conditions for nanocargo transport in biomimetic systems. The study found that increasing the number of motors while avoiding traffic jams is crucial for efficient cargo transport.

SourceMax-Planck-Gesellschaft·JournalBiophysical Journal·DateMay 5, 2005

Watching microglia at work

Microglial cells are highly dynamic, constantly sampling their environment and interacting with neurons. In response to cerebral hemorrhage, microglial cells rapidly rush to the injured site, shielding it and decomposing damaged tissue.

SourceMax-Planck-Gesellschaft·JournalScience·DateApr 15, 2005

Defensins neutralize anthrax toxin

Max Planck scientists have developed a novel therapeutic strategy against anthrax using defensins. These molecules can neutralize the lethal toxin of anthrax bacilli, preventing its deadly effect and protecting against fatal consequences.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateMar 15, 2005

Galaxies in motion

An international team of astronomers has measured the motion of an entire galaxy in the sky using radio telescopes. The measurements show that the galaxy moves at a speed of 190 km/s relative to our Milky Way towards the Andromeda galaxy, and provide insights into the history and future evolution of the Milky Way.

SourceMax-Planck-Gesellschaft·JournalScience·DateMar 4, 2005

Natural selection as we speak

A new model of sound change shows that evolutionary principles can account for striking phonetic similarities across unrelated languages, as well as the rarity of certain sounds. Human perception and articulation make certain kinds of sound change more frequent than others, resulting in emergent properties of language.

X-rays have become laser-like

Austrian-German collaboration creates laser-like X-rays with a compact laboratory apparatus, breaking the nanometer barrier. The technology has the potential to improve X-ray imaging in biology and medicine, enabling early-stage cancer diagnosis at reduced risk and higher resolution.

SourceMax-Planck-Gesellschaft·JournalNature·DateFeb 15, 2005

Open microfluidic and nanofluidic systems

Researchers have developed a new theory explaining the wetting morphologies of liquids in open surface channels. The study reveals that channel geometry and substrate-liquid interaction are key factors determining liquid behavior, enabling the creation of microcompartments for confinement of small amounts of liquids and chemical reagents.

SourceMax-Planck-Gesellschaft·JournalProceedings of the National Academy of Sciences·DateFeb 15, 2005

Quantum memory for light

Researchers successfully transfer the quantum state of a light pulse onto a set of atoms, demonstrating quantum memory. The experiment achieved a 70% coincidence rate, which is higher than what can be obtained by measuring the polarization of the photons directly.

SourceMax-Planck-Gesellschaft·JournalNature·DateDec 3, 2004

Photons under control

Scientists at Max Planck Institute of Quantum Optics create single photons by trapping a calcium ion between two mirrors, allowing for controlled emission. The device enables user-controlled photon emission time and shape, paving the way for quantum information processing.

SourceMax-Planck-Gesellschaft·JournalNature·DateOct 28, 2004

Magnetic stars

Researchers found stable ring-shaped magnetic field configurations in magnetic A-stars, White Dwarf stars, and neutron stars, supporting the 'fossil field' hypothesis. These fields can persist for hundreds of millions of years, surviving the star's life span.

SourceMax-Planck-Gesellschaft·JournalNature·DateOct 15, 2004

Good vibrations in the nanoworld

Carbon nanotubes' electronic and mechanical properties are highly dependent on the presence of defects, which alter their vibrational modes and affect electrical conductivity and heat transport. The study demonstrates the importance of understanding these effects for optimizing nanoscale devices.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateSep 28, 2004

Crystals in nanofocus

Scientists developed a new near-field microscope that excites local lattice vibrations in polar crystals, allowing for nanoscale mapping of crystal quality. The technique reaches a 100-fold higher resolution compared to conventional infrared microscopes and enables non-destructive chemical analysis, nanoscopic sensors, and optical data...

SourceMax-Planck-Gesellschaft·JournalNature Materials·DateAug 31, 2004

Light oscillations become visible

Scientists have developed a technique to visualize the electric field of visible light, measuring its variation with unprecedented resolution. This breakthrough enables direct and accurate measurement of ultrabroad-band light pulses, opening doors to new applications in molecular electronics and X-ray lasers.

SourceMax-Planck-Gesellschaft·JournalScience·DateAug 27, 2004

Imported fitness

Researchers discovered a specific Mlo gene fragment in the genome of mutant barley, which enables plants to resist powdery mildew. The mutation is believed to have occurred less than 10,000 years ago in Ethiopia, highlighting the importance of preserving crop diversity.

SourceMax-Planck-Gesellschaft·JournalNature·DateAug 19, 2004