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Ecole Polytechnique Fédérale de Lausanne


Evading Heisenberg isn't easy

Researchers at EPFL have found unexpected constraints on the achievable sensitivity of measurements, even with backaction-evading techniques. Tiny deviations in optical and mechanical frequencies can cause mechanical oscillations to amplify out of control, affecting quantum sensors and applications.

SourceEcole Polytechnique Fédérale de Lausanne·JournalPhysical Review X·DateOct 31, 2019

Blue Brain finds how neurons in the mouse neocortex form billions of synaptic connections

The Blue Brain researchers have generated statistical instances of the micro-connectome of 10 million neurons, a model spanning five orders of magnitude and containing 88 billion synaptic connections. This model reveals a surprisingly complex structure at cellular resolution, tying together neurons in different regions and at opposite ...

SourceEcole Polytechnique Fédérale de Lausanne·JournalNature Communications·DateAug 29, 2019

Are fertility apps useful?

A study of 200,000 FAM app users found that digital self-tracking can provide valuable information for inferring underlying hormonal changes and ovulation timing. The analysis revealed patterns similar to those in small-scale clinical studies, with notable improvements in the duration and range of the follicular phase.

On the way to nanotheranostics

A new nanotheranostic system uses silica-coated bismuth-ferrite harmonic nanoparticles to combine diagnostic imaging with targeted drug delivery, overcoming limitations of previous approaches. The system allows for medically safe release of therapeutics upon near-infrared light activation.

SourceEcole Polytechnique Fédérale de Lausanne·JournalACS Applied Materials & Interfaces·DateJul 8, 2019

Researchers discover semiconducting nanotubes that form spontaneously

Scientists have discovered semiconducting nanotubes with precise cylindrical structures, which can be used as fluorescent markers in medical research or catalysts in photoreduction reactions. The researchers' accidental discovery reveals the spontaneous formation of these nanostructures using metallic nanocrystals and certain ligands.

SourceEcole Polytechnique Fédérale de Lausanne·JournalACS Central Science·DateJul 8, 2019

Growing embryonic tissues on a chip

Scientists have developed a method to grow human embryonic stem cells in culture, mimicking the dynamic range of morphogen concentrations that tell stem cells what type of specialized cell and tissue to become. This breakthrough has potential applications in regenerative medicine, drug testing, and understanding developmental biology.

How flow shapes bacterial biofilms

Researchers discover that fluid flow significantly impacts bacterial biofilm architecture, with dense formations in weak flows and sparse colonies in strong ones. This study provides insights into the role of physical principles guiding biofilm organization and its implications for bacterial physiology and evolution.

SourceEcole Polytechnique Fédérale de Lausanne·JournalNature Communications·DateJun 6, 2019