News Article | September 6, 2016
HORIBA Scientific’s MacroRAM Raman benchtop spectrometer brings simplicity to Raman measurements without compromising the ability to handle complex samples. Its compact and robust design, including Class 1 laser safety, means it is safe for use in most environments, from undergraduate teaching labs to industrial QC applications. The spectrometer is compact, at just 17 x 17”, and will fit on most lab benches. Designed for versatility, it includes a standard interlocked sample compartment and holders for cuvette-based liquid measurements, along with a solid sample holder. A fiber port is also standard for probe-based Raman measurements outside the sample compartment, accommodating larger or irregularly shaped samples and immersion probes. The spectrometer is designed with a proprietary 120 mm focal length spectrograph with a single aberration-corrected concave grating with a flat field output. Its back-thinned scientific CCD, cooled down to -50 C, delivers high performance and sensitivity. Powered by the company’s LabSpec6 software, it provides a simple and intuitive interface that overlays a powerful Raman engine that provides a comprehensive set of advanced data analysis and visualization tools, including multivariate analysis and database searching. The MacroRAM can characterize most samples and can be configured to perform Stokes Raman measurements, and AntiStokes as an option. HORIBA Scientific www.horiba.com/scientific, 732-494-8660
ZipChip is an innovative system that provides high-quality separation capabilities as a front-end for mass spectrometry (MS), resulting in fast analysis for a broad range of biomolecules. Powered by integrated microfluidic technology, ZipChip revolutionizes the analysis of small molecules to large intact proteins from a range of biofluids and matrices such as blood, urine, plasma, cell lysates, growth media and biotherapeutic products. This enhancement will accelerate the pace and productivity of the biopharmaceutical and biotech development process, from the discovery and development of biotherapeutics all the way through to production and product QA/QC. Traditionally, MS is used for a wide range of biopharma and biotech applications. However, for many large molecules, such as intact proteins, antibodies (mAb), or antibody drug conjugates (ADCs), traditional separation techniques are not directly compatible with traditional MS instruments. Even with small molecules, onerous sample preparation and long analysis times seriously impact lab productivity. With ZipChip, users can obtain positive analysis of these separation peaks by simply connecting a ZipChip interface to existing MS instruments. The system integrates on-board sample preparation, capillary electrophoresis (CE) and electrospray ionization (ESI) into a single microfluidic device to prepare, separate and electrospray biological samples directly into a mass spectrometer. With little sample preparation by the user, the cost-effective technology analyzes molecules quickly, eliminating any trade-off between speed, quality and the amount of sample needed. Through this single interface, users can achieve the following benefits: • Reduced analysis time: In three minutes or less, the system produce separations that are typically equivalent to thirty-minute liquid chromatography (LC) or traditional CE runs with better quality results. • Broad applications and low sample volumes: ZipChips are optimized for both large and small molecules and only require a few nanoliters of sample. • Process efficiency: Typical LC or CE sample prep can take up to thirty minutes. Add to that the long run times and could save users up to one hour per sample. • Simple implementation and ease of use: The system easily integrates with commonly used MS instruments and has simple push-button operation.
Atomising Systems Limited (ASL), based in the UK, has undertaken R&D work on its gas atomizer to meet growing demand for ultrafine gas atomized powders. Following the development of a improved tundish system, the 200kg batch capacity gas atomizer has now been upgraded with a high power gas heater allowing much higher atomising gas temperatures to be achieved. This, coupled with extensive work on ASL’s gas atomising nozzle system, now enables the production of stainless steels with median particle size of less than 20 microns. ASL has also invested in uprated sieving and classification systems, allows the company to undertake powder separations from over 100 microns down to less than 5 microns. With these upgrades ASL has increased its production capacity for the finest grades more than twofold. The company’s quality control (QC) laboratory has also received a significant expansion with a new Malvern Mastersizer, a total oxygen determination instrument, a compaction press and tensometer for green determination of water atomized powders, and an XRF chemical analyser. The company has also recruited extra laboratory staff. ‘While a massive increase in orders for water atomized powders has kept us very busy, we have not neglected to develop our capability to serve our gas atomized powder clients with new grades for MIM, AM , HIP and thermal spray processes amongst others,’ said Simon Dunkley, ASL’s managing director. This story uses material from ASL, with editorial changes made by Materials Today. The views expressed in this article do not necessarily represent those of Elsevier.
New theory could lead to new generation of energy friendly optoelectronics Researchers at Queens University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics
Home > Press > New theory could lead to new generation of energy friendly optoelectronics: Researchers at Queen's University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics Abstract: Researchers at Queen's University Belfast and ETH Zurich, Switzerland, have created a new theoretical framework which could help physicists and device engineers design better optoelectronics, leading to less heat generation and power consumption in electronic devices which source, detect, and control light. Speaking about the research, which enables scientists and engineers to quantify how transparent a 2D material is to an electrostatic field, Dr Elton Santos from the Atomistic Simulation Research Centre at Queen's, said: "In our paper we have developed a theoretical framework that predicts and quantifies the degree of 'transparency' up to the limit of one-atom-thick, 2D materials, to an electrostatic field. "Imagine we can change the transparency of a material just using an electric bias, e.g. get darker or brighter at will. What kind of implications would this have, for instance, in mobile phone technologies? This was the first question we asked ourselves. We realised that this would allow the microscopic control over the distribution of charged carriers in a bulk semiconductor (e.g. traditional Si microchips) in a nonlinear manner. This will help physicists and device engineers to design better quantum capacitors, an array of subatomic power storage components capable to keep high energy densities, for instance, in batteries, and vertical transistors, leading to next-generation optoelectronics with lower power consumption and dissipation of heat (cold devices), and better performance. In other words, smarter smart phones." Explaining how the theory could have important implications for future work in the area, Dr Santos added: "Our current model simply considers an interface formed between a layer of 2D material and a bulk semiconductor. In principle, our approach can be readily extended to a stack of multiple 2D materials, or namely, van der Waals heterostructures recently fabricated. This will allow us to design and predict the behaviour of these cutting-edge devices in prior to actual fabrication, which will significantly facilitate developments for a variety of applications. We will have an in silico search for the right combination of different 2D crystals while reducing the need for expensive lab work and test trials." The present multiscale approach considers the penetration of the field effect through a monolayer 2D material in a metal-oxide-2D material semiconductor (MOGS) quantum capacitor (QC). By using graphene as the model system, the team at Queen's and Zurich ETH developed a macroscopic model to describe the charge distribution in graphene and the semiconductor. These results are corroborated by atomistic ab initio calculations at the level of density functional theory, including van der Waals interactions, which are important due to the nanoscale of the problem (e.g. 10-9 m), and Poisson-Boltzmann equation methods, importantly at micro-scale (e.g. 10-6 m). The team next defined and formulated an index or parameter that quantified the transparency of a monolayer 2D material to an electric displacement field and showed that the transparency is determined by the combined effect of 2D material quantum capacitance and the semiconductor capacitance (classical one studied in high-school). By calculating the quantum capacitance for a variety of 2D materials using accurate hybrid functionals, they predicted the ranking for a variety of 2D compounds according to their transparency to an electric displacement field as follows: graphene > silicene > germanene > WS2 > WTe2 > WSe2 > MoS2 > MoSe2 > MoTe2, when the majority carrier is electron. Funding acknowledgements: E.J.G.S. acknowledges the use of computational resources from the UK national high performance computing service, ARCHER, for which access was obtained via the UKCP consortium and funded by EPSRC grant ref EP/K013564/1; and the Extreme Science and Engineering Discovery Environment (XSEDE), supported by NSF grants number TG-DMR120049 and TG-DMR150017. The Queen's Fellow Award through the startup grant number M8407MPH is also acknowledged and the PhD studentship from the Energy PRP funded by NI-DEL and Queen's University Belfast. For more information, please click If you have a comment, please us. Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
News Article | April 23, 2016
A Google engineer says two of the hottest, newest Android phones today, the HTC 10 and LG G5, are not compliant with the USB Type-C specification. Benson Leung is the same guy who debunked the questionable, non-compliant USB Type-C cables and adapters sold via Amazon. Now, he is back, naming handsets that do not comply with the USB Type-C spec. In the comment section of his recent post on Google+, Leung explains why he thinks the Qualcomm Quick Charge 3.0 technology under the hood of the LG G5 or HTC 10 does not conform to the USB Type-C specification. "I don't recommend any Qualcomm QC 3.0 USB type-C charger, because any of them that claim to support QC 3.0 on a Type-C port violates the Type-C specification," says Leung. "The Type-C spec specifically forbids proprietary charging methods that try to change Vbus beyond 5V." In the latter part of the thread, though, he clarifies his earlier comments about LG G5, HTC 10 plus the Type-C spec (Section 4.8.2). He says that his comments were based on the marketing materials of the two flagship smartphones and the Quick Charge 3.0's description. Leung reiterates he hasn't actually reviewed either of the two phones firsthand and does not plan to do so, nor have the time or techniques to conduct the review. "So don't follow my collections looking for a review or recommendation on any phone, tablet or laptop," Leung says. He goes on to say he can't give any recommendations to people who already have these handsets and that he is not in the position to answer queries as to whether particular scenarios pose a risk or are safe, because he does not have these devices. Qualcomm has also released a statement responding to this matter. "Qualcomm Quick Charge is designed to be connector-independent. It can be implemented in a device that supports a variety of connectors, including USB Type-A, USB micro, USB Type-C, and other," it says. "When an OEM chooses to implement Quick Charge into their device, they can configure the voltage to fit within the specifications of the USB Type-C standard." It adds that Qualcomm has not received any reports regarding device malfunction or user experience problems with or without USB Type-C connectors. © 2016 Tech Times, All rights reserved. Do not reproduce without permission.