The first superconductor at room temperature?
A study published in the journal Nature describes the first superconductor at room temperature. Superconductors are materials that show no electrical resistance, so that electricity can pass through them with an efficiency close to 100%. However, they only work at very low temperatures. We have been looking for a superconductor at ambient temperature for about ten years, capable of being deployed at atmospheric pressure: this would be a major technological good. American researchers have discovered that an assembly of hydrogen, sulfur and carbon becomes a superconductor at 15 ° C, but under very high pressures, on the other hand, of around 300 Giga Pascal, that is to say roughly 3 million times the pressure we are living under. For the first time, a material becomes a superconductor above 0 ° C. These results still need to be confirmed but if so, an important milestone has just been crossed.
Interview with Marie Aude Méasson is a CNRS researcher at the Néel institute in Grenoble.
LA_METHODE_SCIENTIFIQUE – JDS Marie Aude Measson
Track dopamine and serotonin activity in the brain in real time
According to a study published in the journal Neuron : researchers followed the activity of dopamine and serotonin in the brain in real time. A British-American team investigated the transmission of these two chemical messengers in awake patients, while they were performing a task called “a perceptual decision-making task”, that is, patients saw something on a screen and had to determine what they had just seen. The experiment was performed directly in an operating theater. The researchers used electrodes that enabled them to measure the electrical signal of neurons intracerebrally, directly in neurons. The activity of these neurotransmitters was therefore monitored in real time. and it is not quite what we expected. Dopamine and serotonin play a key role in perception and cognition.
Interview with Maude Beaudoin Gobert is a post-doctoral researcher at the Lyon Neuroscience Research Center.
LA_METHODE_SCIENTIFIQUE – JDS Maude Beaudoin Gobert