North Dakota is allocating $5.6 million to support the continued development of the Grand Sky unmanned aerial systems (UAS) business and aviation park at Grand Forks AFB, Gov. Jack Dalrymple (R) said Monday.About $3 million of the funding will be used to upgrade a flight tarmac and other infrastructure that will support UAS testing and flight operations, according to a release from the governor’s office.“North Dakota’s leadership in the growing UAS industry is attracting national attention and we remain committed to developing our expertise and assets into a national hub for UAS manufacturing, research and development,” Dalrymple said.The 217-acre project is being developed under an enhanced use lease with Grand Forks County and calls for 1.2 million square feet of hangar, office, shop, laboratory and data center space required for UAS development, testing and training, sensor technology development, and data analysis and management. The county awarded a sublease to Grand Sky Development Co. to develop the project.The state has provided more than $30 million to the project now under construction. In April, Northrop Grumman agreed to become Grand Sky’s anchor tenant. In February, North Dakota landed its first UAS manufacturing venture when ComDel Innovation and Altavian begin manufacturing UAS and UAS components at its plant in Wahpeton. Dan Cohen AUTHOR
The researchers, from the Korea Electronics Technology Institute and Sungkyunkwan University, both in Gyeonggi-do, Korea; the Ulsan National Institute of Science and Technology in Ulsan, Korea; and Korea University in Seoul, Korea, have published their study in a recent issue of Nano Letters.“We demonstrated how a self-assembly-mediated process can be applied to fabricate graphene micro-patterns on flexible substrates,” Professor Kwang Suh of Korea University told PhysOrg.com. “This process provides a scalable and compatible methodology for the large-scale and roll-to-roll production of graphene patterns.” The goal of the research was to produce highly ordered patterns of PMMA polymer solution (also known as Plexiglas when in solid form) onto a single-layer graphene film prepared on a flexible substrate. The PMMA protects specific regions of the graphene while the graphene is etched by a plasma treatment. After the PMMA is washed off, graphene patterns appear etched in regions that were not covered by PMMA.To pattern the PMMA polymer solution onto the graphene, the researchers positioned a roller on top of the graphene, and the roller was pushed by an upper motorized plate at a defined speed. When the researchers loaded the PMMA solution in a confined space formed between the roller and graphene surface, the PMMA solution edge (i.e., contact line) undergoes continuous stick-slip motion due to the competition between the pinning and capillary forces. As a result, periodically striped PMMA patterns are formed on the graphene surface over large areas. This method produced PMMA stripes with nearly equivalent spacing and a width of about 18 micrometers. By rotating the graphene film 90°, the researchers could also fabricate cross-striped patterns.“Our approach is not only inexpensive but also has diverse applicability, as it can run on either flexible or rigid substrates; and it is much simpler than the conventional photo-lithography process,” said Dr. Woo Seok Yan of the Korea Electronics Technology Institute.To investigate the electronic properties of the final graphene patterns, the researchers fabricated flexible graphene-based field-effect transistors based on the patterns. After adding electrodes and an ion-gel gate dielectric, the researchers tested the transistor and found that it exhibits good electron mobility at low voltages. The same technique could be used to fabricate a variety of graphene-based devices.“With the benefits of its simplicity, high-throughput, and scalability to the roll-to-roll processing, this process holds promise for the integration of graphene into practical electronic devices such as field-effect transistors and sensors,” Yan said.Yan and Suh added that they plan to expand the technique to smaller scales.“Extension of this self-assembly process may lead to an even greater variety of complex graphene patterns on the nanometer scale,” Suh said. “We are now concentrating on the high-throughput and roll-to-roll fabrication of nano-architectured graphene patterns based on this technique.” Explore further Stretchable graphene transistors overcome limitations of other materials Citation: Motorized roller could mass-produce graphene-based devices (2012, February 23) retrieved 18 August 2019 from https://phys.org/news/2012-02-motorized-roller-mass-produce-graphene-based-devices.html More information: TaeYoung Kim, et al. “Large-Scale Graphene Micropatterns via Self-Assembly-Mediated Process for Flexible Device Application.” Nano Letters. DOI: 10.1021/nl203691d Journal information: Nano Letters (PhysOrg.com) — Finding a simple, scalable way to pattern graphene for future electronics applications is one of the biggest challenges facing graphene researchers. While lithography has been widely used to create graphene patterns for electronic devices, its multiple processing steps make it too complex for large-scale use. In a recent study, scientists have found that a motorized, movable roller can deposit a polymer solution onto a graphene surface in periodically striped and cross-striped patterns, which they used to make a transistor. By eliminating several steps involved in lithography, the new technique could lead to a low-cost method for producing graphene patterns for a variety of electronic devices on a large scale. A motorized roller stripes PMMA in periodic patterns on a graphene substrate, which is later etched by a plasma treatment to make patterns in the graphene. Image credit: Kim, et al. ©2012 American Chemical Society This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Copyright 2012 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com.
Kolkata: Muslims living in West Bengal since childhood don’t need to worry about the NRC, BJP MP Roopa Ganguly today said, while urging a section of political parties not to politicise every issue “for the sake of national interest”. Ganguly’s statement comes against the backdrop of a war of words between the TMC and the BJP over the National Register of Citizens (NRC) in Assam. “Pakistan was formed after the Partition on the basis that it becomes a Muslim country. Bangladesh (then East Pakistan) was mainly for Muslims. West Bengal was made part of India as it was for Hindus, who had come from (the then) East Pakistan because they were driven out from there,” Ganguly said on the sidelines of a programme here. Also Read – Rain batters Kolkata, cripples normal life “Those who are living in India since their childhood, including Muslims, do not need to worry about the NRC,” she said. “The Muslims who are living in Bengal since their childhood (for many decades) need not to worry about the NRC. There are certain things which should not be politicised for the sake of national interest,” Ganguly said. The TMC has accused the BJP of being “anti-Bengali” and said it tried to divide the people on religious lines. The BJP in its turn had accused the TMC government of turning the state into a safe haven for Bangladeshi infiltrators for the sake of vote bank politics.
Free Webinar | Sept. 9: The Entrepreneur’s Playbook for Going Global This story originally appeared on Reuters February 12, 2015 Register Now » Microsoft is buying N-trig, an Israeli provider of digital pens and chips for touch screens, for at least $200 million, the Calcalist financial news website said on Thursday.Most of N-trig’s 190 workers will be integrated into Microsoft Israel and will be part of a new research and development center, Calcalist said, without citing sources.Officials at N-trig and Microsoft in Israel could not be reached for comment.N-trig was valued at $75 million when it raised money privately last February.N-trig had revenue of $36.7 million in 2013, up 38 percent from 2012. Revenue totaled $20.6 million in the first half of 2014, when it sold 1.3 million digital pens, more than three times the amount it sold in the same period of 2013.Microsoft, which owns 6.1 percent of the company, signed a deal last year to integrate N-trig’ s pen in its Surface Pro 3 tablets. Other investors in the company include Evergreen Venture Partners, Canaan Partners and Tamares.Customers for N-trig’s technology include Sony, Fujitsu, Hewlett-Packard and Lenovo for use in smartphones, tablets and ultrabooks.(Reporting by Tova Cohen; Editing by Mark Potter) 1 min read Growing a business sometimes requires thinking outside the box.