Precise X-ray thermometer for warm dense matter

New method for temperature determination opens horizon for a multitude of experiments virtually unfeasible up to now

06-Feb-2023 - Warm dense matter (WDM) measures thousands of degrees in temperature and is under the pressure of thousands of Earth's atmospheres. Found in many places throughout the universe, it is expected to have beneficial applications on Earth. However, its investigation is a challenge. Even the ...

Artificial opals measure temperature and time

Researchers discover novel sensors

30-Sep-2021 - Due to their iridescent colors, opals have been considered particularly precious gemstones since antiquity. The way these stones shimmer is caused by their nanostructures. A research group led by Prof. Dr. Markus Retsch at the University of Bayreuth has produced colloidal crystals mimicking such ...

A thermometer can be stretched and crumpled by water

12-Feb-2020 - Recent outbreaks of the novel coronavirus have emphasized the importance of quarantine and prevention more than ever. When monitoring changes in our body, body temperature is first measured. So, it is very significant to measure the temperature accurately and promptly. With this regard, a ...

New polymer mixture creates ultra-sensitive heat sensor

Polymer gels with tunable ionic Seebeck coefficient for ultra-sensitive printed thermopiles

03-Apr-2019 - Scientists at the Laboratory of Organic Electronics have developed an ultra-sensitive heat sensor that is flexible, transparent and printable. The results have potential for a wide range of applications - from wound healing and electronic skin to smart buildings. The ultra-sensitive heat sensor ...

A thermometer for the oceans

Measurement of noble gases in Antarctic ice cores

08-Jan-2018 - The average sea temperature is an essential parameter of the global climate – but it is very difficult to measure. At least until now, because an international team of researchers including Empa scientists have now developed a novel method using the concentration of noble gases in the eternal ...

'Noise thermometry' yields accurate new measurements of Boltzmann constant

03-Jul-2017 - By measuring the random jiggling motion of electrons in a resistor, researchers at the National Institute of Standards and Technology (NIST) have contributed to accurate new measurements of the Boltzmann constant, a fundamental scientific value that relates the energy of a system to its ...

A big step towards the redefinition of the kelvin

PTB scientists determine a new value of the Boltzmann constant

28-Sep-2011 - Metrologists are measurement artists who are very precise – in the case of the Boltzmann constant up to the sixth decimal place. Whoever is able to determine it very exactly will cause a small revolution in the field of worldwide temperature measurement: The temperature unit will then no longer ...

NIST calculations may improve temperature measures for microfluidics

14-Sep-2009 - If you wanted to know if your child had a fever or be certain that the roast in the oven was thoroughly cooked, you would, of course, use a thermometer that you trusted to give accurate readings at any temperature within its range. However, it isn't that simple for researchers who need to measure ...

Novel temperature calibration improves NIST microhotplate technology

13-Aug-2009 - Researchers at the National Institute of Standards and Technology (NIST) have developed a new calibration technique that will improve the reliability and stability of one of NIST's most versatile technologies, the microhotplate. The novel NIST device is being developed as the foundation for ...

Long-lived magnetic fluctuations in a crystal

German scientists measured for the first time long-lived coordinated magnetic fluctuations in a magnetic material using a new neutron beam technique

06-Jul-2006 - One of the most familiar magnetic materials is magnetized iron. Much of the observed behaviour of iron and related magnetic materials can be understood using existing theoretical results. However, due to limitations of the experimental techniques that were previously available, important ...