Page 8 Strong Foundation


Janome robots provide a solid foundation for your dispensing automation.These solutions are designed in support of your dispensing needs, utilizing all that we have learned over the last 20+ years. Choose from 3-axis and 4-axis models with the ability to add a 5th & 6th axis.


Supports syringe, jetting, and 2-part meter/mix applications. Finally, you can purchase it all from a name you trust.


www.us-tech.com


Ion Current Battery Continued from page 1


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electrons flow through wires to inter- face electronics, and ions flow through the battery separator. In our reverse design, a traditional battery is elec- tronically shorted (meaning electrons are flowing through the metal wires). Ions then have to flow through the outside ionic cables. In this case, the ions in the ionic cable — here, grass fibers — can interface with living sys- tems.” Jianhua Zhang, Ph.D., a staff sci-


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entist at the National Institute of Dia- betes and Digestive and Kidney Dis- eases (NIDDK), part of the National Institutes of Health in Bethesda, Maryland, says that potential applica- tions might include “the development of the next generation of devices to mi- cro-manipulate neuronal activities and interactions that can prevent or treat such medical problems as Alzheimer’s disease and depression.” Zhang performed biological ex-


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periments to test that the new bat- tery transmitted current to living cells. “The battery could be used to develop medical devices for the dis- abled, or for more efficient drug and gene delivery tools in both research and clinical settings, as a way to more precisely treat cancers and oth- er medical diseases,” he says. “Look- ing far ahead on the scientific hori- zon, one hopes also that this inven- tion may help to establish the possi- bility of direct machine and human communication.”


September, 2017 World’s First Biocompatible The battery is also unusual in


that it uses grass to store energy. To make the battery, the team soaked blades of Kentucky bluegrass in a lithium-salt solution. The channels that once moved nutrients up and down the grass blade were ideal con- duits to hold the solution. The battery looks like two glass


tubes with a blade of grass inside each, connected by a thin metal wire at the top. The wire is what the elec- trons flow through to move from one end of the battery to the other as the stored energy slowly discharges. At the other end of each glass tube is a metal tip, through which the ionic current flows. The team uses a description of


calcium channels in the muscles and neural gaps in the brain; calcium ions move around in both. In fact, the body is a complex network of ion-cur- rent systems, sometimes using dif- ferent ions to generate electrical fields in each organ system. This is not the first time UMD


scientists have tested natural mate- rials for new uses. Hu and his team have been studying cellulose and plant materials for batteries, creat- ing a battery and a supercapacitor out of wood and a battery from a leaf. The team plans to diversify the


types of ionic current electron batter- ies they can produce, and is develop- ing multiple ionic conductors with cellulose, hydrogels and polymers. Web: www.umdrightnow.umd.edu r


Hanwha Techwin “Basecamp” Continued from page 6


were made wide enough specifically so that new equipment can be wheeled in and set up on the production floor, con- figured, put through paces, and then handed off to customers. If the company is to hold its own


against fierce competition in North America, this new basecamp is an ex- cellent place to start. Others should take note of Hanwha’s clear-eyed view of the marketplace and its com-


mitment to backing up words with demonstrable technology. In terms of new technology, the SMT industry is far from reaching its peak. Contact: Hanwha Techwin


Automation Americas, Inc., 6000 Phyllis Drive, Cypress, CA % 714-373-4200 E-mail: jonny.n@hanwha.com Web: www.hanwhaprecisionmachin- ery.com r


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Continued from page 1


crystals. Because the mechanical re- sponse to the power is non-linear, Tanaka showed that unprecedented low levels of power could be used to generate a disproportionately strong mechanical response. Tanaka found that the freestanding character of the wire is key, or else the non-linearity is lost, reducing the energy efficiency. “Building the freestanding nano -


wire was not easy. Metal oxides are very stiff and brittle. We could fabri- cate the nanowires by growing them on magnesium oxide (MgO) and then etching the MgO layer away.” In their latest publication, the


team has sought to determine just how simple the construction of nano-


resonators using freestanding VO2 nanowires can be. Because of the


electromechanical properties of VO2 crystals and this freestanding de- sign, the nanowires could generate mechanical oscillations at MHz fre- quencies using nothing more than a simple DC power source.


This efficient conversion of elec-


trical energy to mechanical work re- duces the need for dedicated elec- tronic devices, thus enabling the cre- ation of even smaller nano-electro- mechanical systems (NEMS) than those currently in use. The nanowires depend on the


spontaneous oscillations in the elec- trical signal caused by phase transi-


tions in the VO2. These electrical os- cillations cause the VO2 nanowires to also oscillate, but the non-linear elec-


tro-mechanical coupling means that that power on the nano-scale can


generate VO2 oscillations at MHz fre- quencies. The team showed the addi- tional energy for the crystal oscilla- tions comes in the form of heat caused by the electrical power. “We set up our design so that a Joule effect was localized to a gap of


exposed VO2. We found the source of energy for the mechanical response is dominated by thermal dissipations and not electrical power,” says Tana- ka. Web: www.osaka-u.ac.jp/en r


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