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Tropický motýl Morpho peleides nemá ve svých křídlech ani miligram modrého pigmentu, přesto září oslnivou kovovou modří.
Zbarvení je čistě strukturální. Mikroskopické šupinky na křídlech fungují jako nanostruktury (difrakční mřížky), které odrážejí pouze vlnové délky modrého světla pomocí konstruktivní interference. // Při výuce používáme transdisciplinární STEAM přístup

Novinky ze světa vědy

Sledujte s námi, jak moderní věda překonává fantazii a mění realitu.

Bioinženýrství

Science Daily: Bioengineering | 2026-10-23
Scientists discover a plastic-eating “Pac-Man” enzyme with a surprising secret
Scientists have discovered a remarkable “Pac-Man enzyme” that helps bacteria devour certain types of plastic and may offer new hope in the fight against plastic pollution. Researchers found that several biodegradable plastics completely broke down in soil within about a year, while conventional plastic remained largely unchanged.| More info

Scientists discover why a 100-year-old mushroom disease won't go away
Scientists have uncovered a surprising secret behind a mushroom disease that has frustrated growers for more than a century: It involves more than 17 species of harmful bacteria, not just one. The discovery could explain why treatments have struggled to stop the disease and open the door to more effective, eco-friendly solutions.| More info

The “glue” holding your cells together has a surprising second job
Scientists have discovered that E-cadherin, a protein best known as the “glue” holding cells and tissues together, has a surprising second job: helping epithelial cells swallow nearby dead cells. Using live zebrafish and mouse embryos, researchers found that cells can dramatically reshape their lower surfaces to engulf cellular debris while keeping their upper surfaces stable, allowing protective barriers to remain sealed.| More info

Scientists find evidence for two origins of life on Earth
Scientists probing life’s deepest origins have uncovered evidence that the first free-living cells may have emerged not once, but twice. The findings suggest a striking possibility: life may share one ancient genetic code, yet have undergone two separate transitions into free-living existence.| More info

Scientists just found what keeps plant cells from growing out of control
Before seedlings can photosynthesize, they depend on fatty acids—and on peroxisomes to process them. Researchers discovered that the protein PEX11 not only helps these structures divide but also controls their size during early growth. When key genes were altered, peroxisomes grew abnormally large, suggesting internal vesicles normally keep them in balance. Remarkably, a yeast version of the protein fixed the problem, pointing to a deeply conserved mechanism across species.| More info

Chemie

Chemistryworld.com | 2026-10-23
Bacteria discovered to be synthesising metal–organic frameworks with ‘extraordinary conductivity’
Biosynthesis of MOFs observed for the first time and could inspire the design of sustainable electronic structures| More info

Metal carbyne finally synthesised using f-block element
Bonding in uranium–carbon triple bond differs to transition metal equivalents| More info

Controlling variability in biosynthesis: the role of high-purity solvents and reagents
From oligonucleotides to mRNA, precise workflows leave little room for deviation| More info

40 years of patent data reveals an overreliance on hazardous solvents
AI models trained on biased datasets could perpetuate hazardous practices rather than making chemistry more sustainable| More info

Two-in-one reagent combines fluoroalkylation with being click ready
Researchers add to growing toolkit of bifunctional reagents| More info

Nanotechnologie

Nanotechnology research news from Nanowerk | 2026-10-23
Modified sugars enable simpler synthesis of nanoporous carbon materials without templates
Chemically modified sugars form carbon materials with tunable nanopores or layered nanostructures, eliminating conventional templates and offering a simpler route to materials for batteries and catalysis.| More info

Archimedes' screw made from a single molecule
An electrically driven molecular machine spins in a controllable direction, increasing conductivity up to 100-fold and opening possibilities for future molecular electronics.| More info

Nanometer-thin iron films lose magnetism 75% more easily under laser pulses
Iron films just two nanometers thick show 75% stronger laser-induced demagnetization than thicker layers, revealing how nanoscale interfaces influence magnetism and could advance ultrafast data storage.| More info

Nanostructured silicon chip uses slow light to speed data transmission and cut energy use
Tiny holes in silicon slow down light, enabling a compact optical modulator to transmit data at up to 200 Gb/s while dramatically reducing energy consumption.| More info

World's first touchscreen woven into clothing using electronic fibers
A washable, flexible garment integrates thousands of microchips into touch-sensitive fibers, creating a wearable screen that displays videos, responds to touch and connects wirelessly to devices.| More info

Dnešek v historii

24. 10. 1877

Narodil se Roger Clark Wells, výzkumník sloučenin sodíku a analýz radioaktivních minerálů.

Pracoval jako hlavní chemik US Geological Survey a výrazně přispěl ke geochemickému výzkumu vzácných prvků.