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2007 Cleantech Conference and Trade Show Cleantech 2007最新文献

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Layer by Layer Fabrication of an Amperometric Nanocomposite Biosensor for Sulfite 亚硫酸盐纳米复合安培生物传感器的逐层制备
Pub Date : 2006-12-08 DOI: 10.1201/9780429187469-83
S. Adeloju, A. Ohanessian
A layer by layer strategy is described for the galvanostatic fabrication of a polypyrrole nanocomposite amperometric biosensor for sulfite. The strategy can be used to fabricate bilayer and trilayer sulfite biosensors, consisting of nanolayers of polypyrrole-sulfite oxidase, polypyrrole-dextran-sulfite oxidase, polypyrrole-chloride and/or polypyrrole-nitrate films. It has been demonstrated that the nature of the outer nanolayer has a significant influence on the selectivity and sensitivity of the amperometric nanocomposite biosensor. The presence of interferants, such as oxalic and tartaric acids at levels usually present in wine and beer did not interfere with the nanocomposite biosensor. The successful application of the nanolayer biosensor to sulfite determination in some wine and beer samples without sample pre-treatment is demonstrated.
介绍了一种用于亚硫酸盐的聚吡咯纳米复合安培生物传感器的逐层恒流制备策略。该策略可用于制备双层和三层亚硫酸盐生物传感器,包括聚吡咯-亚硫酸盐氧化酶、聚吡咯-葡聚糖-亚硫酸盐氧化酶、聚吡咯-氯化物和/或聚吡咯-硝酸盐薄膜的纳米层。研究表明,外纳米层的性质对安培型纳米复合生物传感器的选择性和灵敏度有显著影响。干扰物的存在,如草酸和酒石酸,通常存在于葡萄酒和啤酒中,不会干扰纳米复合生物传感器。本文演示了该纳米层生物传感器在未进行样品预处理的情况下,成功地应用于葡萄酒和啤酒样品中亚硫酸盐的测定。
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引用次数: 0
Amorphous Diamond Solar Cells 非晶金刚石太阳能电池
Pub Date : 2006-10-01 DOI: 10.29808/JVSROC.200610.0004
J. Sung, Ming-Chi Kan, Shao-Chung Hu
Amorphous diamond has the least work function for electron emission in vacuum. It is also the most thermionic material possible. Hence, amorphous diamond can be used as thermally activated energy converter, such as a solar cell. Amorphous diamond solar cells may have the potential to generate electricity with cost on the par with power plants in the near future. The implementation of amorphous diamond solar cells may usher human civilization to the availability of unlimited clean energy.
非晶金刚石在真空中对电子发射的功函数最小。它也是最具热离子性的材料。因此,无定形金刚石可以用作热激活能量转换器,如太阳能电池。在不久的将来,非晶金刚石太阳能电池可能有潜力以与发电厂相当的成本发电。无定形金刚石太阳能电池的实施可能会引领人类文明走向无限清洁能源的可用性。
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引用次数: 0
Gas Sensor Arrays by Supersonic Cluster Beam Deposition 超声速束束沉积气体传感器阵列
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-73
E. Barborini, M. Leccardi, G. Bertolini, O. Rorato, M. Franchi, D. Bandiera, M. Gatelli, K. Wegner, A. Raso, A. Garibbo, C. Ducati, P. Piseri, P. Milani, Piazzetta Bossi
Supersonic cluster beam deposition was employed to produce nanostructured thin films of transition met al oxides to be used as gas sensors. Due to high nanoparticle beam collimation, patterned deposition was easily obtain ed by using hard masks, achieving sub-micrometric resolut ion. To exploit hard mask patterning micro-machined substrates having an array structure were developed in order t o deposit materials with different properties on each single element of the array. Results on the deposition of nanostru ctured TiO 2, WO 3, SnO 2 and on the detection of volatile organic compounds (VOC) and gases related to environmental pollution (such as NO x) are reported.
采用超声速束沉积技术制备过渡态金属氧化物纳米薄膜,并将其用作气体传感器。由于纳米粒子光束准直度高,使用硬掩模可以很容易地获得图像化沉积,达到亚微米分辨率。为了开发硬掩模图像化,开发了具有阵列结构的微机械衬底,以便在阵列的每个单元上沉积具有不同性质的材料。报道了纳米结构tio2、wo3、sno2的沉积以及挥发性有机化合物(VOC)和环境污染相关气体(如NO x)的检测结果。
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引用次数: 0
Electrochemical ‘Lab on a chip’ for Toxicity Detection in Water 用于水中毒性检测的电化学“芯片实验室”
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-84
T. Neufeld, R. Popovtzer, J. Rishpon, E. Ron, Y. Shacham-Diamand
An electrochemical 'Lab-on-a-chip' for water toxicity detection is presented. This miniaturized device containing an array of nano liter electrochemical cells, which integrates bacteria and can emulate physiological reactions in response to different chemicals. Bacteria, which have been genetically engineered to respond to environmental stress, act as a sensor element and trigger a sequence of processes, which leads to generation of electrical current. The silicon chip contains an array of nano-volume electrochemical cells that house the bacteria, connected to a sensing and data analysis unit. Each of the electrochemical cells in the array can be monitored independently and simultaneously with the others. A measurable current signal, well above the noise level, was produced within less than 10 minutes of exposure to representative toxicants. This miniature device provides high throughput rapid and sensitive real-time detection of acute toxicity in water.
提出了一种用于水毒性检测的电化学“芯片实验室”。这种微型装置包含一组纳米级电化学电池,可以整合细菌,模拟对不同化学物质的生理反应。经过基因工程改造的细菌可以对环境压力做出反应,充当传感器元件,触发一系列过程,从而产生电流。这种硅芯片包含一组纳米级电化学电池,这些电池可以容纳细菌,并与传感和数据分析单元相连。阵列中的每个电化学电池都可以独立监测,也可以与其他电池同时监测。一个可测量的电流信号,远高于噪音水平,在不到10分钟内产生的代表性有毒物质。该微型装置提供高通量、快速、灵敏的水中急性毒性实时检测。
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引用次数: 0
Enlarge the distance of water molecules to incise microorganism cell—the development and application of nano-grade microorganism cell crushing machine 扩大水分子切割微生物细胞的距离——纳米级微生物细胞粉碎机的研制与应用
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-76
Yao Hongwen, Guo Suge
Nano-grade microorganism cell crushing machine(patent number: 03143321.9)can break the microbial cell to nanometer level. It established the machine rationale to study out the enlargement water intermolecular distance formula from the design special-purpose spray nozzle, the enlargement water intermolecular distance, jetting flow of water molecule, cutting the microorganism cell. The birth of nano-grade microorganism cell crushing machine ended the disintegrator family cannot crush microscopic material the history. 1.1 Sending jet flow of water molecule and the structure of spray nozzle[1] [2] [3]P P[4]P P[5]P P
纳米级微生物细胞破碎机(专利号:03143321.9)可将微生物细胞破碎至纳米级。从设计专用喷嘴、增大水分子间距离、喷射水分子流量、切割微生物细胞等方面研究出增大水分子间距离公式,建立了机器原理。纳米级微生物细胞破碎机的诞生结束了粉碎机家族不能粉碎微观物质的历史。1.1水分子送射流及喷嘴结构[1][2][3]P P[4]P P[5]P P
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引用次数: 0
Solar-Blind Dual-Band UV/IR Photodetectors Integrated on a Single Chip 单芯片集成太阳盲双波段紫外/红外光电探测器
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-33
A. Bensaoula, C. Boney, R. Pillai, D. Starikov
Employment of layered structures made of semiconductor materials with different optical absorption bands, is a new way of realizing either a broad spectrum photodetector or selective multiple band photodetectors. Such a concept based on structures fabricated using stacked semiconducting layers to obtain a multi spectral photoresponse is investigated in this paper. Based on the selected approach, fabrication of a dualband UV/IR photodetector with a reasonable responsivity at room temperature has been demonstrated. The integrated device is capable of detecting optical emissions separately in the UV and IR parts of the spectrum. The responsivities of this device are ~0.01A/W, at a peak wavelength of 300 nm and ~0.08 A/W, at a peak wavelength of 1000 nm, respectively. The described dual-band photodetectors can be employed for false alarm-free fire/flame detection and advanced hazardous object or target detection and recognition in several industrial, military, and space applications.
利用具有不同光吸收带的半导体材料制成的层状结构,是实现广谱光电探测器或选择性多波段光电探测器的新途径。本文研究了这种基于堆叠半导体层结构的多光谱光响应概念。基于所选择的方法,已经证明了在室温下具有合理响应的双波段紫外/红外光电探测器的制造。该集成装置能够在光谱的紫外和红外部分分别检测光发射。该器件在峰值波长为300 nm时的响应度为~0.01A/W,在峰值波长为1000 nm时的响应度为~0.08 a /W。所描述的双频光电探测器可用于无假警报的火灾/火焰探测和先进的危险物体或目标探测和识别,在几个工业、军事和空间应用中。
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引用次数: 0
Enhancement of Oxygen Transfer in Fermentation by Use of Functionalized Magnetic Nanoparticles 功能化磁性纳米颗粒增强发酵过程中的氧传递
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-70
L. Bromberg, T. Hatton, B. Ollé, Wang D.I.C.
Enhancement of oxygen mass transfer has been observed in the presence of colloidal dispersions of magnetite (Fe3O4) nanoparticles coated with oleic acid and a polymerizable surfactant. These fluids improve gas-liquid oxygen mass transfer up to 6 fold in an agitated, sparged, cell-free reactor and show remarkable stability in high-ionic strength media over a wide pH range. A combination of experiments using physical and chemical methods has been used to show that the mass transfer coefficient kL and the volumetric mass transfer coefficient kLa are enhanced in the presence of nanoparticles. An increase of 40% in the oxygen uptake rate has been achieved in Escherichia Coli fermentation at a 5.5-L scale by using 0.6% w/w particles dispersed in fermentation media. The enhancement in mass transfer is directly translatable into increased fermenter productivity.
在油酸和可聚合表面活性剂包覆的磁铁矿(Fe3O4)纳米颗粒的胶体分散体存在下,观察到氧传质增强。在搅拌、喷射、无细胞反应器中,这些流体将气液氧传质提高了6倍,并且在宽pH范围内的高离子强度介质中表现出卓越的稳定性。采用物理和化学相结合的实验方法表明,纳米颗粒的存在提高了传质系数kL和体积传质系数kLa。在5.5 l规模的大肠杆菌发酵中,在发酵培养基中分散0.6% w/w的颗粒,吸氧率提高了40%。质量传递的增强直接转化为发酵罐生产率的提高。
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引用次数: 0
Nanotechnology and the Water Market: Applications and Health Effects 纳米技术和水市场:应用和健康影响
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-41
F. Mowat, J. Tsuji
Nanotechnology has enormous potential for creating cost-effective, simple, and efficient tools for addressing water-supply challenges while preventing the creation of potentially toxic byproducts. The success of these technologies using nanomaterials, however, will depend on whether the nanoparticles and fibers can be confined and isolated from human and environmental receptors and on assessments of the potential health and environmental risks if exposures do occur. To truly qualify as “green” technology, applications of nanotechnology will need to demonstrate that such exposures and potential concerns for health and environmental risk can be managed adequately. This paper describes some of these technologies, focusing on nanofiltration and disinfection, desalination, and environmental remediation, as well as implications to human health and the environment.
纳米技术具有巨大的潜力,可以创造成本效益高、简单和有效的工具来解决供水挑战,同时防止产生潜在的有毒副产品。然而,这些使用纳米材料的技术的成功将取决于纳米颗粒和纤维是否能够被限制并与人类和环境受体分离,以及如果确实发生接触,对潜在的健康和环境风险的评估。要真正符合“绿色”技术的资格,纳米技术的应用将需要证明这种暴露和对健康和环境风险的潜在关切能够得到充分管理。本文介绍了其中的一些技术,重点是纳滤和消毒、海水淡化和环境修复,以及对人类健康和环境的影响。
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引用次数: 1
Composite Carbon Nanostructures as Promising Carriers for Gaz Analysis 复合碳纳米结构在Gaz分析中的应用前景
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-81
L. Majoli, A. Evstratov, J. Guillot, A. Rouvière, P. Baussand
A lot of applications of carbon nanostructures (CNS) have been developed for the last fifteen years. Besides some particular electronic properties, such structures possess considerable adsorption capacities and so could be proposed both for gas treatment and for gas sampling and analysis. In this work, nanostructured carbon based composite samples were elaborated by the Catalytic Pyrolysis Method over the catalyst beds containing different transition metals supported by activated alumina (γ-Al2O3). Their efficiencies for volatile organic compounds (VOC) trapping, compared with the ones of Tenax-TA as the reference material, were evaluated in dynamic conditions. The obtained results show a real interest for new active material application for VOC adsorption procedures.
碳纳米结构(CNS)在过去的十五年中得到了广泛的应用。除了一些特殊的电子性质外,这种结构还具有相当大的吸附能力,因此可以用于气体处理和气体取样和分析。在活性氧化铝(γ-Al2O3)负载的不同过渡金属催化剂床上,采用催化热解方法制备了纳米结构碳基复合材料样品。以Tenax-TA为对照品,在动态条件下对其挥发性有机化合物(VOC)的捕获效率进行了评价。所获得的结果显示了新的活性材料应用于VOC吸附过程的真正兴趣。
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引用次数: 0
Investigating the Benefit-Cost of MEMS Application for Structural Health Monitoring of Transportation Infrastructure MEMS应用于交通基础设施结构健康监测的效益成本研究
Pub Date : 2006-05-07 DOI: 10.1201/9780429187469-85
Alan Davy, M. Jha
In recent years MEMS has been widely recognized as an effective device for structural health monitoring of transportation structures, such as bridges and tunnels. It is unclear, however, whether the benefits of MEMS application far outweigh the associated cost. A quantitative approach for benefit and cost calculation of MEMS application for structural health monitoring of transportation infrastructure will be a major step forward to provide guidance to potential MEMS users. In this paper, we develop a fuzzy logic-based approach (since MEMS benefits are generally fuzzy in nature and at best, they can be quantified using fuzzy-logic) for benefit-cost calculation associated with MEMS application. Real-world case studies will be presented in future works using the proposed fuzzylogic approach.
近年来,MEMS已成为桥梁、隧道等交通运输结构健康监测的有效设备。然而,目前尚不清楚MEMS应用的好处是否远远超过相关的成本。将MEMS应用于交通基础设施结构健康监测的效益和成本定量计算方法,将是为潜在的MEMS用户提供指导的重要一步。在本文中,我们开发了一种基于模糊逻辑的方法(因为MEMS效益本质上通常是模糊的,最多可以使用模糊逻辑进行量化),用于与MEMS应用相关的效益-成本计算。现实世界的案例研究将在未来的作品中使用所提出的模糊逻辑方法。
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引用次数: 0
期刊
2007 Cleantech Conference and Trade Show Cleantech 2007
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