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Park River, ND, United States

Marinov V.R.,Center for Nanoscale Science and Engineering | Swenson O.,Center for Nanoscale Science and Engineering | Swenson O.,North Dakota State University | Atanasov Y.,Center for Nanoscale Science and Engineering | Schneck N.,Center for Nanoscale Science and Engineering
Proceedings of SPIE - The International Society for Optical Engineering

Ultrathin flip-chip semiconductor die packaging on paper substrates is an enabling technology for a variety of extremely low-cost electronic devices with huge market potential such as RFID smart forms, smart labels, smart tickets, banknotes, security documents, etc. Highly flexible and imperceptible dice are possible only at a thickness of less than 50 μm, preferably down to 10-20 μm or less. Several cents per die cost is achievable only if the die size is ≤ 500 μm/side. Such ultrathin, ultra-small dice provide the flexibility and low cost required, but no conventional technology today can package such die onto a flexible substrate at low cost and high rate. The laser-enabled advanced packaging (LEAP) technology has been developed at the Center for Nanoscale Science and Engineering, North Dakota State University in Fargo, North Dakota, to accomplish this objective. Presented are results using LEAP to assemble dice with various thicknesses, including 350 μm/side dice as thin as 20 μm and less. To the best of our knowledge, this is the first report of using a laser to package conventional silicon dice with such small size and thickness. LEAP-packaged RFID-enabled paper for financial and security applications is also demonstrated. The cost of packaging using LEAP is lower compared to the conventional pick-and-place methods while the rate of packaging is much higher and independent of the die size. © 2013 SPIE. Source

Stafslien S.J.,Center for Nanoscale Science and Engineering | Bahr J.,Center for Nanoscale Science and Engineering | Daniels J.,Center for Nanoscale Science and Engineering | Christianson D.A.,Center for Nanoscale Science and Engineering | And 2 more authors.
Journal of Adhesion Science and Technology

Marine biofouling of ship hulls has significant cost, performance and environmental implications. Due to environmental concerns associated with traditional antifouling paints that mitigate fouling with the use of biocides, increasing research and development efforts have been made on fouling-release (FR) coatings. FR coatings do not actively deter settlement of marine organisms, but, instead, mitigate biofouling by minimizing the strength of adhesion. Ideally, an FR coating will allow the fouling community to be removed by simply running the vessel at relatively high speed. Traditional methods for characterizing FR properties involve immersion of relatively large samples in the ocean and waiting months for enough fouling to occur to enable reliable measurements to be made. To greatly enhance research and development relative to FR coatings, a combinatorial/high-throughput workflow was developed that includes a suite of FR laboratory assays involving marine bacteria, microalgae, and live, adult barnacles. The novel high-throughput FR measurement systems have been shown to allow for rapid screening of FR characteristics of miniaturized coating samples arranged in an array format. © 2011 Koninklijke Brill NV, Leiden. Source

News Article
Site: http://www.cemag.us/rss-feeds/all/rss.xml/all

North Dakota State University has its Center for Nanoscale Science and Engineering, due to a lack of funding. Operations ceased as of Sept. 30 — most employees found work elsewhere on the NDSU campus, while others found jobs in private industries. However, the center will continue to host research projects, and the cleanroom will be used in at least four classes, according to a published interview with Kelly Rusch, NDSU vice president for research and creative activity. According to Valley News, former North Dakota Senator is puzzled as to why the school closed the center, after he helped them secure over $140 million dollars in federal funding for CNSE between 2002 and 2010. The school has retorted that the center is not entirely closed. Dorgan has called the closure “a major loss of a great opportunity for NDSU.” Controlled Environments published a case study of the facility back in 2005. Read more: The 14,500 sq. ft. features 8,000 sq. ft. of service chase, and 4,100 sq. ft. of Class 10,000 and 2,300 sq. ft. of Class 100 cleanrooms for microsensors and nanotechnology research, plus traditional semiconductor processes. The center utilizes the cleanrooms for electronic miniaturization research and fabrication. The cleanrooms contain photolithography, wet chemistry and thin film deposition technology. The facility was founded in 2002, and it was used to develop coatings for Navy ships and ground sensors that were deployed in Iraq, in addition to other projects. But funding started decreasing for the center in 2011, after  — are funds given by Congress for projects, programs, or grants where the purported congressional direction (whether in statutory text, report language, or other communication) circumvents otherwise applicable merit-based or competitive allocation processes, or specifies the location or recipient, or otherwise curtails the ability of the executive branch to manage its statutory and constitutional responsibilities pertaining to the funds allocation process. The center had to apply for small competitive grants after that, but it was not enough. The research group was posting 10 to 12 articles per year at its peak, and now it’s down to about six or seven. New hires ceased in 2012, and workers were laid off. Without proper funding and workers to operate the machinery, the lab equipment may grow stagnant from lack of use, and there isn’t enough money to buy new tools. North Dakota State University was one of the institutions who, in April of this year, received part of a $3.8 million grant from the U.S. Department of Agriculture’s National Institute of Food and Agriculture . NDSU’s share was $149,714. The school also received a portion of the National Science Foundation’s $81 million for its . This announcement, from September 2015, partners NDSU with the University of Minnesota Twin Cities.

Dai X.,Center for Nanoscale Science and Engineering | Schulz D.L.,Center for Nanoscale Science and Engineering | Braun C.W.,Center for Nanoscale Science and Engineering | Ugrinov A.,735 NDSU Research Park Drive | Boudjouk P.,North Dakota State University

Perhalogenated cyclohexasilanes, Si6X12 (X = Cl, Br), were prepared by reaction of Si6H12 with molecular chlorine or bromine in cold (-89 °C) dichloromethane. Single-crystal structural determination by X-ray analysis shows that the six silicon atoms comprising Si6Br12 adopt a chair conformation in the solid state. The addition of p-tolunitrile to Si6X12 (X = Cl, Br) leads to the rapid formation of colorless precipitates. Si 6Br12A2(p-CH3C6H4CN) adopts an "inverse sandwich" structure where the N atoms of the p-tolunitrile molecules are μ6 bonded and are located above and below the planar hexagonal Si6 ring. © 2010 American Chemical Society. Source

Wu J.F.,Center for Nanoscale Science and Engineering | Fernando S.,Center for Nanoscale Science and Engineering | Weerasinghe D.,Center for Nanoscale Science and Engineering | Chen Z.,Center for Nanoscale Science and Engineering | And 2 more authors.

Industrial grade soybean oil (SBO) and thiols were reacted to generate thiol-functionalized oligomers via a thermal, free radical initiated thiol-ene reaction between the SBO double bond moieties and the thiol functional groups. The effect of the reaction conditions, including thiol concentration, catalyst loading level, reaction time, and atmosphere, on the molecular weight and the conversion to the resultant soy-thiols were examined in a combinatorial high-throughput fashion using parallel synthesis, combinatorial FTIR, and rapid gel permeation chromatography (GPC). High thiol functionality and concentration, high thermal free radical catalyst concentration, long reaction time, and the use of a nitrogen reaction atmosphere were found to favor fast consumption of the SBO, and produced high molecular weight products. The thiol conversion during the reaction was inversely affected by a high thiol concentration, but was favored by a long reaction time and an air reaction atmosphere. These experimental observations were explained by the initial low affinity of the SBO and thiol, and the improved affinity between the generated soy-thiol oligomers and unreacted SBO during the reaction. The synthesized soy-thiol oligomers can be used for renewable thiol-ene UV curable materials and high molecular solids and thiourethane thermal cure materials. Glorious soybeans: The thermal, free radical initiated thiol-ene reaction between thiols and vegetable oil generates high molecular weight, oil-based, and multi-functional thiols. © 2011 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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