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Nanotechnology Spotlight

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Showing Spotlights 49 - 56 of 1891 in category (newest first):

 

Lattice constant as a length standard in scanning probe microscope calibration

feature-orientedThe drawbacks of existing measures for calibrating scanning probe microscopes (SPMs) based on various diffraction gratings and periodic microstructures, are large period and large error of period. Both factors prevent using these measures for precise calibration of SPMs and other instruments operating in the nanometer range. To address this issue, researchers have developed a method of calibration of a scanning probe microscope by lattice constant of a crystal.

Posted: Mar 25th, 2016

Graphene renders low local current density to inhibit growth of lithium dendrites

graphene_flakesLithium (Li) metal-based batteries such as Li-sulfur and Li-air batteries have received considerable attention because Li metal can store 10 times more energy than graphite. However, there are safety and performance concerns for these types of batteries that arise from the formation of dendrites on the electrodes. To address this issue, researchers have proposed an unstacked graphene nanostructured lithium metal anode for lithium metal batteries to inhibit lithium dendrite growth and bring superior electrochemistry performance.

Posted: Mar 15th, 2016

Three new developments for smarter sensor chips

sensor_chipOur environment will slowly but surely evolve into an 'Internet of Things', where chips and sensors are integrated invisibly in the environment to assume their manifold tasks. Think of sensors that detect the presence of individuals and adapt the light in a building accordingly, resulting in serious energy savings. Those sensors will be, in a sense, the eyes, ears, and noses of our environment. At the recent ISSCC-conference, researchers have presented a number of remarkable developments. These may pave the way to a world where sensors assist us to drive more safely, live healthier, and make the planet more sustainable.

Posted: Mar 10th, 2016

Advanced protein design opens new avenues for nanotechnology

protein_engineeringThe manufacture of nanoparticles has reached a very high level of control of their shape, size and chemical nature. However, assembling nanoparticles in a controlled manner and with clearly defined functionalities in three-dimensional space remains quite a challenge. Researchers have now taken a first step towards the goal of protein-driven assembly of nanoparticles. In this ground-breaking work, they show that gold nanoparticles with a diameter of 10nm can be assembled using two different protein pairs.

Posted: Mar 8th, 2016

Inorganic perovskite quantum dots for lighting and displays

quantum_dotLuminescent quantum dots (LQDs), which possess high photoluminescence quantum yields, flexible emission color controlling, and solution processibility, are promising for applications in lighting systems (warm white light without UV and infrared irradiation) and high quality displays. However, the commercialization of LQDs has been held back by the prohibitively high cost of their production. In a breakthrough approach, researchers have now succeeded in preparing highly emissive inorganic perovskite quantum dots at room temperature.

Posted: Mar 7th, 2016

Writing nanotubes with a nano fountain pen

drawing_carbon_nanotubesIn new work, an international team of researchers describes the drawing and Raman characterization procedure developed for placing single-walled carbon nanotubes (SWCNTs), proof of SWCNT alignment, optimization of the drawing parameters, and the subsequent placement in predefined lithographic structures for the demonstration of electrical conductivity. In essence, the team developed a simple nanopen for drawing and placing aligned single or multiple rod like molecules nanometrically.

Posted: Mar 2nd, 2016

Nanotechnology in textiles - the new black

shirtNanoengineered functional textiles are going to revolutionize the clothing that you'll wear. The potential of nanotechnology in the development of new materials in the textile industry is considerable. This review discusses electronic and photonic nanotechnologies that are integrated with textiles and shows their applications in displays, sensing, and drug release within the context of performance, durability, and connectivity. On the one hand, existing functionality can be improved using nanotechnology and on the other, it could make possible the manufacture of textiles with entirely new properties or the combination of different functions in one textile material.

Posted: Feb 29th, 2016

Self-healing, highly stretchable supercapacitor based on a dual crosslinked polyelectrolyte

self-healingNot all electrocapacitive materials are intrinsically stretchable and various modified structures and electron/ion-inactive stretchable substrates have been utilized to introduce stretchability into conventionally rigid supercapacitors. Now, researchers have developed a multifunctional polyelectrolyte, achieving an electrochemically complete self-healability and 600% stretchability of supercapacitors. This work can be applied to other energy conversion and storage devices such as batteries, fuel cells, etc.

Posted: Feb 22nd, 2016