Nanodiamonds feel the heat

Nanodiamond sensor can act as both heat sources and thermometers, and may lead to a new set of heat-based treatments for killing bacteria or cancer cells

19-Jan-2021 - A team of scientists from Osaka University, The University of Queensland, and the National University of Singapore's Faculty of Engineering used tiny nanodiamonds coated with a heat-releasing polymer to probe the thermal properties of cells. When irradiated with light from a laser, the sensors ...

A better way to control crystal vibrations

23-May-2018 - The vibrational motion of an atom in a crystal propagates to neighboring atoms, which leads to wavelike propagation of the vibrations throughout the crystal. The way in which these natural vibrations travel through the crystalline structure determine fundamental properties of the material. For ...

Microhotplates for a smart gas sensor

24-Feb-2017 - Gas sensors used for leakage alerts and air quality monitoring are essential in our daily lives. Towards a ubiquitous society, smart gas sensors, which perform signal processing and communication besides sensing, have attracted much attention. In addition, integrating these functions into a ...

Beating the heat a challenge at the nanoscale

03-Aug-2016 - Rice University scientists who analyze the properties of materials as small as a single molecule have encountered a challenge that appears at very low temperatures. In trying to measure the plasmonic properties of gold nanowires, the Rice lab of condensed matter physicist Douglas Natelson ...

Thermal cameras snoop beneath surfaces to reveal materials’ secrets

19-Jan-2016 - Scientists at the Department of Energy’s Oak Ridge National Laboratory are pioneering the use of infrared cameras to image additive manufacturing processes in hopes of better understanding how processing conditions affect the strength, residual stresses and microstructure of 3D-printed parts. ...

Diverging thermal conductivity

Physicists at the Max Planck Institute for Polymer Research show unlimited heat conduction in graphene.

20-May-2014 - Scientists at the Max Planck Institute for Polymer Research (MPI-P) in Mainz and the National University of Singapore have attested that the thermal conductivity of graphene diverges with the size of the samples. This discovery challenges the fundamental laws of heat conduction for extended ...

Thermal Properties of Alloys at a Glance

26-Jul-2011 - For the manufacture and processing of metal alloys, it is very important to have knowledge about the thermal properties. Manufacturers, processors and end-users all utilize various thermal analysis methods for materials development, incoming goods inspection and quality assurance. The new poster ...

Researchers image atomic structural changes that control properties of sapphires

02-Dec-2010 - Materials scientists from Case Western Reserve University and the Institute of Solid State Research in Jülich, Germany have produced particularly clear changes in the atomic structure of sapphire following deformation at high temperatures. Peering through an electron microscope down to a level ...

Engineers develop method to disperse chemically modified graphene in organic solvents

02-Apr-2009 - A method for creating dispersed and chemically modified graphene sheets in a wide variety of organic solvents has been developed by a University of Texas at Austin engineering team led by Professor Rod Ruoff, opening the door to use graphene in a host of important materials and applications such ...

Introducing the next generation of chemical reactors

23-Sep-2008 - Unique nanostructures which respond to stimuli, such as pH, heat and light will pave the way for safer, greener and more efficient chemical reactors. Being developed by a consortium of UK universities, the nanostructures can regulate reactions, momentum, and heat and mass transfer inside chemical ...