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Nanotechnology

Distribution by Scientific Domains

Polymers and Materials Science	29%
Chemistry	19%
Life Sciences	10%
Medical Sciences	9%
Law and Criminology	9%
Physics and Astronomy	5%
Earth and Environmental Science	5%
Humanities and Social Sciences	3%
Engineering	2%
Business, Economics, Finance and Accounting	2%

Distribution within Polymers and Materials Science

General & Introductory Materials Science	68%
Polymer Science & Technology General	13%
4 Other Subdomains	19%

Selected Abstracts

Overview of polymer micro/nanomanufacturing for biomedical applications

ADVANCES IN POLYMER TECHNOLOGY, Issue 4 2008
Allen Y. Yi
Abstract Micro/nanotechnology is initiated from the electronics industry. In recent years, it has been extended to micro/nanoelectromechanic system for producing miniature devices based on silicon and semiconductor materials. However, the use of these hard materials alone is inappropriate for many biomedical devices. Soft polymeric materials possess many attractive properties such as high toughness and recyclability. Some possess excellent biocompatibility, are biodegradable, and can provide various biofunctionalities. Proper combinations of micro/nanoelectronics, polymers, and biomolecules can lead to new and affordable medical devices. In this paper, we briefly review several cleanroom and noncleanroom techniques related to micro/nanomanufacturing of polymeric materials. © 2009 Wiley Periodicals, Inc. Adv Polym Techn 27:188,198, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/adv.20134 [source]

Nanotechnologies: Tools for sustainability in a new wave of water treatment processes

INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT, Issue 4 2006
Jean-Yves Bottero
Abstract In the environmental technology industry alone, nanomaterials will enable new means of reducing the production of industrial wastes, using resources more sparingly, remediating industrial contamination, providing potable water, and improving the efficiency of energy production. This paper discusses three new kinds of nanotechnology materials that should be developed in the future: Membranes, oxidants, and adsorbents. Nanoscale control of membrane architecture may yield membranes of greater selectivity and lower cost in both water treatment and water fabrication. Fullerene-based oxidant nanomaterials such as C60 have a high electron affinity and reactivity, and are capable of producing reactive oxygen species such as singlet oxygen and superoxides. Fullerenes might be used in engineered systems to photocatalytically oxidize organic contaminants, or inhibit or inactivate microbes. The ability to tailor surfaces can help to increase adsorbing capacities or recognize specific contaminants. The potential environmental risks are that nanomaterials could interact with biota and that their toxicity adversely may affect ecosystems. As nanochemistry emerges as an important force behind new environmental technologies, we are also presented with the responsibility of considering the environmental implications of an emerging technology at its inception and taking every precaution to ensure that these technologies develop as tools of sustainability rather than becoming future liabilities. [source]

Problem Formulation and Option Assessment (PFOA) Linking Governance and Environmental Risk Assessment for Technologies: A Methodology for Problem Analysis of Nanotechnologies and Genetically Engineered Organisms

THE JOURNAL OF LAW, MEDICINE & ETHICS, Issue 4 2009
Kristen C. Nelson
Societal evaluation of new technologies, specifically nanotechnology and genetically engineered organisms (GEOs), challenges current practices of governance and science. Employing environmental risk assessment (ERA) for governance and oversight assumes we have a reasonable ability to understand consequences and predict adverse effects. However, traditional ERA has come under considerable criticism for its many shortcomings and current governance institutions have demonstrated limitations in transparency, public input, and capacity. Problem Formulation and Options Assessment (PFOA) is a methodology founded on three key concepts in risk assessment (science-based consideration, deliberation, and multi-criteria analysis) and three in governance (participation, transparency, and accountability). Developed through a series of international workshops, the PFOA process emphasizes engagement with stakeholders in iterative stages, from identification of the problem(s) through comparison of multiple technology solutions that could be used in the future with their relative benefits, harms, and risk. It provides "upstream public engagement" in a deliberation informed by science that identifies values for improved decision making. [source]

Science, Ethics, and the "Problems" of Governing Nanotechnologies

THE JOURNAL OF LAW, MEDICINE & ETHICS, Issue 4 2009
Linda F. Hogle
Commentators continue to weigh in on whether there are ethical, social, and policy issues unique to nanotechnology, whether new regulatory schemes should be devised, and if so, how. Many of these commentaries fail to take into account the historical and political environment for nanotechnologies. That context affects regulatory and oversight systems as much as any new metrics to measure the effects of nanoscale materials, or organizational changes put in place to facilitate data analysis. What comes to count as a technical or social "problem" says much about the sociotechnical and political-historical networks in which technologies exist. This symposium's case studies provide insight into procedural successes and failures in the regulation of novel products, and ethical or social analyses that have attended to implications of novel, disruptive technologies. Yet what may be needed is a more fundamental consideration of forms of governance that may not just handle individual products or product types more effectively, but may also be flexible enough to respond to radically new technological systems. Nanotechnology presents an opportunity to think in transdisciplinary terms about both scientific and social concerns, rethink "knowns" about risk and how best to ameliorate or manage it, and consider how to incorporate ethical, social, and legal analyses in the conceptualization, planning, and execution of innovations. [source]

OUTLINING ETHICAL ISSUES IN NANOTECHNOLOGIES

BIOETHICS, Issue 7 2009
ANTONIO G. SPAGNOLO
ABSTRACT Nanotechnologies are an expression of the human ability to control and manipulate matter on a very small scale. Their use will enable an even and constant monitoring of human organisms, in a new and perhaps less invasive way. Debates at all levels , national, European and international , have pointed out the common difficulty of giving a complete, clear definition of nanotechnologies. This is primarily due to the variety of their components, to the fact that there is not just one technology but several. The most significant medical applications of nanotechnologies are in the diagnostic and the therapeutic fields, eg biosensors and molecular imaging, providing diagnosis and drug delivery with no invasive methods involved. Like any other emerging field, such technologies imply new possibilities for improving health but, on the other hand, they are still at an experimental stage and therefore should be implemented under rigorous safety testing before going on general release. For this purpose, the ethical, legal and social implications (ELSI) of nanotechnologies have been elaborated by study groups, in order to develop solutions before the results of the tests are diffused into medical practice. The aim of this paper is to define some of the ethical issues concerning biomedical applications and to evaluate whether there is a need for new or additional guidelines and regulations. [source]

Nanotechnology Applied on Hot Forging Dies

ADVANCED ENGINEERING MATERIALS, Issue 7 2008
H.-C.
The life time of the forging dies still remains a concern and plays an important role on the costs of this process. Latest developments achieved with nanotechnology have proven that thin coatings applied on the surface of the hot forging dies bring technical and economical gains. PVD (Physical Vapor Deposition) deposition processes have confirmed their potential to substantially improve the wear resistance of the hot forging dies. [source]

Designer Biomaterials for Nanomedicine

ADVANCED FUNCTIONAL MATERIALS, Issue 24 2009
Nishit Doshi
Abstract Nanotechnology has had tremendous impact on medical science and has resulted in phenomenal progress in the field of drug delivery and diagnostics. A wide spectrum of novel nanomaterials including polymeric particles, liposomes, quantum dots, and iron oxide particles have been developed for applications in therapeutic delivery and diagnostics. This has resulted in control over the rate and period of delivery and targeting of drugs to specific organs in the human body. This feature article focuses on the delivery of drugs using polymeric particles. The size, choice of polymer, surface chemistry, shape, and mechanical properties of the particles are parameters that critically affect particle function. Numerous biomaterials and fabrication techniques have been developed in the last decade that focus on novel design parameters, such as shape and mechanical properties and the interplay of these parameters with the size and surface chemistry of particles. Recent advances with particular focus on the importance of particle shape are highlighted, and the challenges that are yet to be fulfilled are underscored. [source]

From the Philosopher's Stone to Nanotechnology: Celebrating 800 Years of University of Cambridge (1209,2009)

ADVANCED MATERIALS, Issue 38-39 2009
Andrew Holmes
No abstract is available for this article. [source]

Biomimetic Nanostructures: Diatomaceous Lessons in Nanotechnology and Advanced Materials (Adv. Mater.

ADVANCED MATERIALS, Issue 29 2009
29/2009)
The cover picture shows a series of SEM and AFM images of silica structures from several different diatom species. These images demonstrate remarkable structural diversity and unique porous architectures of diatoms justifying their status as the world's smallest nanofabrication factories. Further details can be found in the article by Nicolas Voelcker and co-workers on p. 2947. [source]

Diatomaceous Lessons in Nanotechnology and Advanced Materials

ADVANCED MATERIALS, Issue 29 2009
Dusan Losic
Abstract Silicon, in its various forms, finds widespread use in electronic, optical, and structural materials. Research on uses of silicon and silica has been intense for decades, raising the question of how much diversity is left for innovation with this element. Shape variation is particularly well examined. Here, we review the principles revealed by diatom frustules, the porous silica shells of diatoms, microscopic, unicellular algae. The frustules have nanometer-scale detail, and the almost 100,000 species with unique frustule morphologies suggest nuanced structural and optical functions well beyond the current ranges used in advanced materials. The unique frustule morphologies have arisen through tens of millions of years of evolutionary selection, and so are likely to reflect optimized design and function. Performing the structural and optical equivalent of data mining, and understanding and adopting these designs, affords a new paradigm in materials science, an alternative to combinatorial materials synthesis approaches in spurring the development of new material and more nuanced materials. [source]

How the nanotechnology revolution will affect cost management

JOURNAL OF CORPORATE ACCOUNTING & FINANCE, Issue 3 2006
Saurav Dutta
Nanotechnology,the application of research about objects at the molecular level,holds the promise of transforming the processes used to produce goods, revolutionizing whole industries, and transforming society as a whole. This article explores the cost management and corporate financial implications of this coming revolution. © 2006 Wiley Periodicals, Inc. [source]

Selecting Nanotechnology-Based Composites Using Colorimetric and Visual Analysis for the Restoration of Anterior Dentition: A Case Report

JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY, Issue 2 2004
FRANK J. MILNAR DDS
ABSTRACT Currently it is possible to use direct composites and layering techniques to replicate the complex internal structures, visible shape, color, and surface anatomy of natural teeth. To do so, however, requires dentists to understand the principles of nature and the science of dental materials to determine the most suitable restorative material for a specific indication. By incorporating relatively new technologies,colorimetric analysis, which provides computerized shade guide definitions of a tooth and essential information to verify shade mapping, and a new nanotechnology-based direct composite,into composite layering techniques, dentists can more predictably replicate the esthetics of natural teeth. This article presents a case in which both technologies, used in combination with a composite layering technique, contributed to the esthetic and functional restoration of the maxillary central incisors. [source]

Mutagenic Safety and Fatty Liver Improvement of Nanonized Black Soybeans in Senescence-Accelerated Prone-8 Mice

JOURNAL OF FOOD SCIENCE, Issue 5 2010
J.-W. Liao
Abstract:, Nanotechnology, as a new enabling technology, has the potential to revolutionize food systems. However, much attention has been focused on nanoparticle foods due to their potential physiological properties. This study was aimed to evaluate the mutagenic safety and fatty liver improvement of black soybean in senescence-accelerated mice (SAMP8). The mutagenic activity of black soybeans was investigated using the Ames test (Salmonella Typhimurium,TA98, 100, 102, and 1535). Furthermore, senescence-accelerated prone-8 mice (SAMP8) have been reported to display spontaneous fatty liver. Male SAMP8 mice were divided into control and supplemented with 10% micronized or nanonized black soybeans diet and fed for 12 wk. The results revealed that the Ames test of micronized and nanonized black soybeans exhibited no mutagenicity. Administration of black soybeans to mice showed no effects on food intake and body and organ weights. The nanonized black soybean group had a lower degree of spontaneous fatty liver, alanine aminotransferase, and thiobarbituric acid-reactive substance concentrations, and had enhanced superoxide dismutase, catalase, and glutathione peroxidase activities of livers when compared with the SAMP8 control and micronized black soybean groups. The mice fed with black soybeans had significantly lower triglyceride concentrations than the SAMP8 control group. The results of this study suggest that nanonized black soybeans have no side effects and, moreover, may minimize liver lesions in SAMP8 mice. [source]

Hazard Reduction in Nanotechnology

JOURNAL OF INDUSTRIAL ECOLOGY, Issue 3 2008
Lucas Reijnders
Summary The release of hazardous substances is a matter of concern for nanotechnology. This may include some nanoparticles, reactants, by-products, and solvents. The use of low-hazard solvents may reduce the hazards from nanoparticle production and nanomaterial processing. The hazards of inorganic nanoparticles may be reduced by modifying their chemical composition, surface characteristics, or structure. In nanomedicine, optimizing the balance between persistence and excretion and preventing the release of toxic degradation products may reduce hazard. In applications of fixed inorganic nanoparticles, the focus should be on preventing the release of such particles and of hazardous compounds during the product life cycle. When, after exhaustion of known hazard reduction options, significant hazard remains, other approaches merit consideration. [source]

Using Nanotechnology for the Substitution of Hazardous Chemical Substances

JOURNAL OF INDUSTRIAL ECOLOGY, Issue 3 2008
Challenges of Definition, Measurement
Summary It is often assumed that nanotechnology (NT) holds the potential to provide a substantial contribution to the solution of various ecological problems, including high consumption of energy and materials and the generation of waste. However, problems surrounding the use and release of hazardous substances remain largely unexplored. For this reason, the Scientific Technical Option Assessment (STOA) Panel of the European Parliament initiated a study on "The Role of Nanotechnology in Chemical Substitution." The subject and aim of the study was an investigation into preexisting and potential applications of NT that could lead to a reduction in hazardous substances by providing substitutes for them. In terms of method, it was based on electronic searches of the literature, expert interviews, and an expert workshop. This article discusses the results of the project. It focuses on the methodological challenges and the principal problems resulting from a combination of the broad and ill-defined concept of NT and the specific concept of hazardous substances. The hazardous substances addressed had to be reduced to a manageable number, and the term substitution was understood according to the characteristics of NT and the way in which the latter could reduce the use of hazardous substances. Although several applications of NT were identified that could lead to a considerable reduction in the use of hazardous substances, ambiguities in both the concept of NT and the concept of substitution in relation to NT prevent a comprehensive assessment of the potential of NT in respect to substitution. [source]

Nanotechnology and Separation Science

JOURNAL OF SEPARATION SCIENCE, JSS, Issue 6-7 2003
Joseph J. Pesek
[source]

3rd Workshop on Semiconductor Nanodevices and Nanostructured Materials (NanoSemiMat-3)

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue S2 2004
E. F. da Silva Jr.
The 3rd Workshop on Semiconductor Nanodevices and Nanostructured Materials (NanoSemiMat-3) took place in Salvador, Bahia, Brazil, 24,27 March 2004. The NanoSemiMat network is part of the Brazilian Initiative on Nanoscience and Nanotechnology (N&N). The papers include the following topics: Photodetectors, Lasers and LEDs, Porous Materials, New Materials, New Technologies, Molecular Technology and Interfaces, Nanostructured Materials and Nanobiotechnology. The presentations reflect theoretical and experimental research on nanostructured semiconductor materials such as III,V and II,VI, Si and SiC based nanodevices, wide gap materials, ceramics, polymers, porous materials, optical and transport properties of low-dimensional structures, magnetic nanostructures and structures under the influence of high fields, spintronics and sensor applications. This issue is devoted to Prof. J. R. Leite, Sao Paulo, former Regional Editor of physica status solidi and Guest Editor in memoriam of the present Proceedings. [source]

Preface: phys. stat. sol. (c) 1/S2

PHYSICA STATUS SOLIDI (C) - CURRENT TOPICS IN SOLID STATE PHYSICS, Issue S2 2004
E. F. da Silva Jr.
The papers in this special issue of physica status solidi (c) are selected manuscripts including diverse research lines presently in development in the ambit of the NanoSemiMat network in Brazil. The 3rd Workshop on Semiconductor Nanodevices and Nanostructured Materials (NanoSemiMat-3) took place in Salvador, Bahia, Brazil, at the Catussaba Resort Hotel, during the period of 24,27 March 2004. The NanoSemiMat network is part of the Brazilian Initiative on Nanoscience and Nanotechnology (N&N), with strategic cooperative research support in this area. The initiative started in 2001, through the formation of four research networks nationwide in different scientific fields associated to NanoScience and Nanotechnology (N&N). The 3rd Workshop on Nanodevices and Nanostructured Materials (NanoSemiMat-3) is an evolution of the two previous meetings which were held in Recife, PE, Brazil and Natal, RN, Brazil in 2002 and 2003, respectively. The meeting comprised 16 invited plenary talks, each 30 minutes long, given by eminent researchers from Brazil, Canada, France, Germany and the United States of America. These invited talks extend through different topics of N&N associated to Nanodevices and Nanostructured Materials: Photodetectors, Lasers and LEDs, Porous Materials, New Materials, and New Technologies, among others. There were short talks presented by representatives of the other N&N networks in Brazil dealing with Molecular Technology and Interfaces, Nanostructured Materials and Nanobiotechnology. Also a poster session, with about 60 presentations, highlighted the main research activities presently being developed by the network members at the different sites which constitute the NanoSemiMat network. The presentations reflected theoretical and experimental research lines which lead to the development of basic and applied research in nanostructured semiconductor materials such as III,V and II,VI, Si and SiC based nanodevices, wide gap materials, ceramics, polymers, porous materials, optical and transport properties of low dimensional structures, magnetic nanostructures and structures under the influence of high fields, spintronics and sensor applications. The participants of the workshop came from 20 research institutions within Brazil and from 7 research laboratories and universities in Europe and North America. In total about 120 researchers, members of the network, invited researchers, representatives of supporting and funding agencies in Brazil, undergraduate and graduate students, technical staff and supporting personal as well as researchers from complementary fields were present. The realization of the NanoSemiMat-3 was possible due to the financial support of the Brazilian Ministry of Science and Technology (MCT) and the Brazilian National Research Council (CNPq) and the logistic support of Federal University of Bahia. All activities during the NanoSemiMat-3 were open to the general public with interest in nanoscience and nanotechnology. In this third workshop of the series, we highlight the expansion of its format, with plenary and invited talks, poster sessions, as well as the presence of seven invited speakers from abroad. We expect that the continuation of the NanoSemiMat series will be a forum for discussions of state-of-the-art research developed in Brazil on N&N and the multidisciplinary field of semiconductor nanodevices and nanostructured materials as well as its superposition to other branches of science. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source]

A comparative study on camphorsulphonic acid modified montmorillonite clay based conducting polymer nanocomposites

POLYMER COMPOSITES, Issue 5 2010
Ufana Riaz
Nanotechnology has emerged as a subject of immense academic interest and excitement in the past few decades. The immediate goal of this science aims at the production of high performance nanomaterials. The present study reports comparative investigations on the in situ polymerization of polyaniline (PANI), and its derivatives poly(1-naphthylamine) (PNA) and poly(o -toluidine) (POT) within the camphor sulphonic acid (CSA) modified montmorillonite (MMT) layers. The polymerization as well as intercalation of the conducting polymers was confirmed by FT-IR, UV-visible spectroscopies, and XRD studies, whereas the morphology of the nanocomposites was analyzed by TEM studies. It was found that the PANI derivatives (PNA and POT) revealed higher intercalation as compared with PANI. The morphology of nanocomposites was found to be governed by the type of conducting polymer intercalated. A large variation in the morphology as well as particle size was observed between the nanocomposites of PANI and its derivatives. The conductivity was found to be in the range of 10,3,10,2 S·cm,1. POLYM. COMPOS., 2010. © 2009 Society of Plastics Engineers [source]

Nanotechnology and groundwater remediation: A step forward in technology understanding

REMEDIATION, Issue 2 2006
Christian Macé
Nanotechnology application to contaminated site remediation, and especially the use of nanoscale zero-valent iron particles to treat volatile organic compound (VOC)-impacted groundwater, is now recognized as a promising solution for cost-effective in situ treatment. Results obtained during numerous pilot tests undertaken by Golder Associates between 2003 and 2005 in North America (United States and Canada) and Europe have been used to present a synthetic cross-comparison of technology dynamics. The importance of a comprehensive understanding of the site-specific geological, hydrogeological, and geochemical conditions, the selection of appropriate nanoscale particles, the importance of monitoring geochemical parameters during technology application, and the potential of nanoparticle impact on microbial activity are discussed in this article. The variable technology dynamics obtained during six pilot tests (selected among numerous other tests) are then presented and discussed. © 2006 Wiley Periodicals, Inc. [source]

Utilization of nanoscale zero-valent iron for source remediation,A case study

REMEDIATION, Issue 2 2006
Keith W. Henn
A pilot-scale study was performed using a palladium-catalyzed and polymer-coated nanoscale zero-valent iron (ZVI) particle suspension at the Naval Air Station in Jacksonville, Florida. A total of 300 pounds of nanoscale ZVI particle suspension was injected via a gravity feed and recirculated through a source area containing chlorinated volatile organic compounds (VOCs). The recirculation created favorable mixing and distribution of the iron suspension and enhanced the mass transfer of sorbed and nonaqueous constituents into the aqueous phase, where the contaminants could be reduced. Between 65 and 99 percent aqueous-phase VOC concentration reduction occurred, due to abiotic degradation, within five weeks of the injection. The rapid abiotic degradation processes then yielded to slower biological degradation as subsequent decreases in -elimination parameters were observed,yet favorable redox conditions were maintained as a result of the ZVI treatment. Post-treatment analyses revealed cumulative reduction of soil contaminant concentrations between 8 and 92 percent. Aqueous-phase VOC concentrations in wells side gradient and downgradient of the source were reduced up to 99 percent and were near or below applicable regulatory criteria. These reductions, coupled with the generation of innocuous by-products, indicate that nanoscale ZVI effectively degraded contamination and reduced the mass flux from the source, a critical metric identified for source treatment. A summary of this project was recently presented at the US EPA Workshop on Nanotechnology for Site Remediation in Washington, D.C., on October 21,22, 2005. This case study supplied evidence that nanoscale zero valent iron, an emerging remediation technology, has been implemented successfully in the field. More information about this workshop and this presentation can be found at www.frtr.gov/nano/index.htm. © 2006 Wiley Periodicals, Inc. [source]

Science, Ethics, and the "Problems" of Governing Nanotechnologies

Patenting Nanotechnology in Europe: Making a Good Start?

THE JOURNAL OF WORLD INTELLECTUAL PROPERTY, Issue 1 2010
An Analysis of Issues in Law, Regulation
Nanotechnology is the technology that concerns itself with the smallest units of matter and promises manipulation of matter on the level of individual molecules. It is expected that vastly improved quality of many kinds of products will be the result. The patenting of nanotech inventions is well under way in Europe, but going down to the most elemental level raises new and important questions. For example, how does patenting at the nano level relate to similar technology on the super-nano level? Also fundamental questions can be asked, such as: should matter at all be patentable at the most elemental level? This article seeks to give a first overview of questions of law and regulation concerning the patentability of inventions in the field of nanotechnology under the European Patent Convention. [source]

On Solar Hydrogen & Nanotechnology.

ANGEWANDTE CHEMIE, Issue 32 2010
Herausgegeben von Lionel Vayssieres.
John Wiley & Sons, Hoboken 2010. 704,S., geb., 212.00,,.,ISBN 978-0470823972 [source]

Biotec Visions 2010, May,June

BIOTECHNOLOGY JOURNAL, Issue 5 2010
Article first published online: 3 MAY 2010
News:Ethanol biofuels from orange peels , Targeting leukaemia's gene addiction , Pea-derived solar cells , HIV is a kick in the head , Nano-scale DNA reader , Membrane in black , Cheese improves the immune response of elderly , Synthetic proteins built from standard parts , Therapeutic proteins produced in algae , Biosensor detects 100 mycoplasma cells , Protecting maggots against bacteria , Advanced biofuels from microbes , Fluorescent bacterial uptake , Two disparate stem cell states , Brachypodium genome sequenced Encyclopedia of Life Sciences: Nuclear transfer for cell lines WIREs Nanomedicine and Nanobiotechnology: Nanoparticle detection of respiratory infection Journal Highlights: Biocatalysis , Synthetic Biology In the news: Nanobiotech to detect cancer Most Read Industry News: Biomarker assays for personalized medicine , Bioplastic industry defies economic crisis , SDS-PAGE monitoring of mAB Awards: BTJ Editors elected members of the US National Academy of Engineering (NAE) Meeting highlight Writing tips: Figure preparation made simple , Some useful tutorials on the web Book Highlights:Molecular Biotechnology , Bacterial Signaling , Yeast Test your knowledge:Do you recognize this? WIREs Authors Spotlight:Nanotechnology and orthopedics [source]

Special Focus: Nanotechnology and Biochips

BIOTECHNOLOGY JOURNAL, Issue 11 2009
Article first published online: 13 NOV 200
Introduction Some nanotech/biochip companies Biochip product news Biochips in our sister journals [source]

Nanotechnology and its applications in surgery

BRITISH JOURNAL OF SURGERY (NOW INCLUDES EUROPEAN JOURNAL OF SURGERY), Issue 4 2010
M. Loizidou
No abstract is available for this article. [source]

Nanotechnology Plays a Key Role in the Development of New Energy Systems

CHEMSUSCHEM CHEMISTRY AND SUSTAINABILITY, ENERGY & MATERIALS, Issue 10 2008
Ulrich Buller Prof.
No abstract is available for this article. [source]

Inlaid Multi-Walled Carbon Nanotube Nanoelectrode Arrays for Electroanalysis

ELECTROANALYSIS, Issue 1 2005
Jun Li
Abstract The rapid development in nanomaterials and nanotechnologies has provided many new opportunities for electroanalysis. We review our recent results on the fabrication and electroanalytical applications of nanoelectrode arrays based on vertically aligned multi-walled carbon nanotubes (MWCNTs). A bottom-up approach is demonstrated, which is compatible with Si microfabrication processes. MWCNTs are encapsulated in SiO2 matrix leaving only the very end exposed to form inlaid nanoelectrode arrays. The electrical and electrochemical properties have been characterized, showing well-defined quasireversible nanoelectrode behavior. Ultrasensitive detection of small redox molecules in bulk solutions as well as immobilized at the MWCNT ends is demonstrated. A label-free affinity-based DNA sensor has shown extremely high sensitivity approaching that of fluorescence techniques. This platform can be integrated with microelectronics and microfluidics for fully automated microchips. [source]

Nanobiotechnology: From Molecules to Systems

ENGINEERING IN LIFE SCIENCES (ELECTRONIC), Issue 3 2004
H. Klefenz
Abstract Nanobiotechnology is a key enabling multidisciplinary field for medical, technological and biological research and development, medicine, pharmaceutical development, and analytical sciences. Its foundation is the selective integration of a multitude of endeavours, such as biotechnology, chemical and physical nanotechnology, materials sciences, chemistry, engineering, electronics and optronics targeting the construction of micro- and nano-arrays for analyzing complex mixtures of DNA, RNA, proteins, metabolites as well as the design of ultra-sequencing devices, microbial fuel cells, implantates, molecular motors, artificial organs, and nanorobots. The developments in nanobiotechnology benefit from and contribute to the scientific advances in the chemical and physical nanotechnologies, in particular with respect to materials, composites, nanostructuring techniques, carbon nanotubes, and nanoelectronics. [source]