Xem 1-20 trên 148 kết quả Nanoscale
  • The possible impact of nanomaterials on future products and services is enormous. This has led to a tremendous expansion in research and development efforts related to nanoscale materials and devices. It has also raised new questions as to how these products will influence the environment, human health, business, education, and other areas of society. As with any emerging field, a vast amount of disconnected information is emerging, often spread across multiple disciplines.

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  • Silicon technology continues to progress, but device scaling is rapidly taking the metal oxide semiconductor field-effect transistor (MOSFET) to its limit. When MOS technology was developed in the 1960's, channel lengths were about 10 micrometers, but researchers are now building transistors with channel lengths of less than 10 nanometers. New kinds of transistors and other devices are also being explored. Nanoscale MOSFET engineering continues, however, to be dominated by concepts and approaches originally developed to treat microscale devices...

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  • Porous metal organic framework nanoscale carriers as a potential platform for drug delivery and imaging, In the domain of health, one important challenge is the efficient delivery of drugs in the body using non-toxic nanocarriers. Most of the existing carrier materials show poor drug loading and or rapid release of the proportion of the drug that is simply adsorbed at the external surface of the nanocarrier.

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  • Tools shape how we think; when the only tool you have is an axe, everything resembles a tree or a log. The rapid advances in instrumentation in the last decade, which allow us to measure and manipulate individual molecules and structures on the nanoscale, have caused a paradigm shift in the way we view molecular behavior and surfaces. The microscopic details underlying interfacial phenomena have customarily been inferred from in situ measurements of macroscopic quantities. Now we can see and “finger” physical and chemical processes at interfaces.

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  • ul Hasan et al. Nanoscale Research Letters 2011, 6:348 http://www.nanoscalereslett.com/content/6/1/348 NANO EXPRESS Open Access Single nanowire-based UV photodetectors for fast switching Kamran ul Hasan1*, N H Alvi1, Jun Lu2, O Nur1 and Magnus Willander1 Abstract Relatively long (30 µm) high quality ZnO nanowires (NWs) were grown by the vapor-liquid-solid (VLS) technique. Schottky diodes of single NW were fabricated by putting single ZnO NW across Au and Pt electrodes. A device with ohmic contacts at both the sides was also fabricated for comparison.

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  • Jones et al. Nanoscale Research Letters 2011, 6:246 http://www.nanoscalereslett.com/content/6/1/246 NANO EXPRESS Open Access Experimental study of combustion characteristics of nanoscale metal and metal oxide additives in biofuel (ethanol) Matthew Jones1, Calvin H Li1,2*, Abdollah Afjeh1, GP Peterson3 Abstract An experimental investigation of the combustion behavior of nano-aluminum (n-Al) and nano-aluminum oxide (nAl2O3) particles stably suspended in biofuel (ethanol) as a secondary energy carrier was conducted.

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  • Tham khảo tài liệu 'báo cáo hóa học: " atomic force microscopy investigation of the kinetic growth mechanisms of sputtered nanostructured au film on mica: towards a nanoscale morphology control"', luận văn - báo cáo phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Nanoscale physics, nowadays one of the most topical research subjects, has two major areas of focus. One is the important field of potential applications bearing the promise of a great variety of materials having specific properties that are desirable in daily life. Even more fascinating to the researcher in physics are the fundamental aspects where quantum mechanics is seen at work; most macroscopic phenomena of nanoscale physics can only be understood and described using quantum mechanics. The emphasis of the present volume is on this latter aspect....

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  • Timoshenko et al. Nanoscale Research Letters 2011, 6:349 http://www.nanoscalereslett.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Nanoscale surface modifications to control capillary flow characteristics in PMMA microfluidic devices

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  • Kärber et al. Nanoscale Research Letters 2011, 6:359 http://www.nanoscalereslett.com/content/6/1/359 NANO EXPRESS Open Access Photoluminescence of spray pyrolysis deposited ZnO nanorods Erki Kärber1, Taavi Raadik1, Tatjana Dedova1, Jüri Krustok1, Arvo Mere1, Valdek Mikli2 and Malle Krunks1* Abstract Photoluminescence of highly structured ZnO layers comprising well-shaped hexagonal rods is presented.

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  • Medina et al. Nanoscale Research Letters 2011, 6:369 http://www.nanoscalereslett.com/content/6/1/369 NANO EXPRESS Open Access Hyperspectral optical imaging of two different species of lepidoptera José Manuel Medina1*, Sérgio Miguel Cardoso Nascimento1 and Pete Vukusic2 Abstract In this article, we report a hyperspectral optical imaging application for measurement of the reflectance spectra of photonic structures that produce structural colors with high spatial resolution.

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  • Sasmito et al. Nanoscale Research Letters 2011, 6:376 http://www.nanoscalereslett.com/content/6/1/376 NANO EXPRESS Open Access Numerical evaluation of laminar heat transfer enhancement in nanofluid flow in coiled square tubes Agus Pulung Sasmito1,2, Jundika Candra Kurnia1* and Arun Sadashiv Mujumdar1,2 Abstract Convective heat transfer can be enhanced by changing flow geometry and/or by enhancing thermal conductivity of the fluid. This study proposes simultaneous passive heat transfer enhancement by combining the geometry effect utilizing nanofluids inflow in coils.

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  • Harazim et al. Nanoscale Research Letters 2011, 6:215 http://www.nanoscalereslett.com/content/6/1/215 NANO EXPRESS Open Access Integrated sensitive on-chip ion field effect transistors based on wrinkled InGaAs nanomembranes Stefan M Harazim*†, Ping Feng, Samuel Sanchez, Christoph Deneke, Yongfeng Mei, Oliver G Schmidt Abstract Self-organized wrinkling of pre-strained nanomembranes into nanochannels is used to fabricate a fully integrated nanofluidic device for the development of ion field effect transistors (IFETs).

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  • Peng et al. Nanoscale Research Letters 2011, 6:219 http://www.nanoscalereslett.com/content/6/1/219 NANO IDEA Open Access Migration of carbon nanotubes from liquid phase to vapor phase in the refrigerant-based nanofluid pool boiling Hao Peng1,2, Guoliang Ding1*, Haitao Hu1 Abstract The migration characteristics of carbon nanotubes from liquid phase to vapor phase in the refrigerant-based nanofluid pool boiling were investigated experimentally. Four types of carbon nanotubes with the outside diameters from 15 to 80 nm and the lengths from 1.5 to 10 μm were used in the experiments.

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  • Zhao and Nan Nanoscale Research Letters 2011, 6:230 http://www.nanoscalereslett.com/content/6/1/230 NANO EXPRESS Open Access Preparation of stable magnetic nanofluids containing Fe3O4@PPy nanoparticles by a novel one-pot route Baobao Zhao and Zhaodong Nan* Abstract Stable magnetic nanofluids containing Fe3O4@Polypyrrole (PPy) nanoparticles (NPs) were prepared by using a facile and novel method, in which one-pot route was used. FeCl3·6H2O was applied as the iron source, and the oxidizing agent to produce PPy. Trisodium citrate (Na3cit) was used as the reducing reagent to form Fe3O4 NPs.

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  • La Magna and Deretzis Nanoscale Research Letters 2011, 6:234 http://www.nanoscalereslett.com/content/6/1/234 NANO EXPRESS Open Access Theoretical study of the role of metallic contacts in probing transport features of pure and defected graphene nanoribbons Antonino La Magna*, Ioannis Deretzis Abstract Understanding the roles of disorder and metal/graphene interface on the electronic and transport properties of graphene-based systems is crucial for a consistent analysis of the data deriving from experimental measurements.

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  • White et al. Nanoscale Research Letters 2011, 6:346 http://www.nanoscalereslett.com/content/6/1/346 NANO REVIEW Open Access Investigation of the electrical conductivity of propylene glycol-based ZnO nanofluids Steven Bryan White*, Albert Jau-Min Shih and Kevin Patrick Pipe Abstract Electrical conductivity is an important property for technological applications of nanofluids that has not been widely studied.

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  • Poklonski et al. Nanoscale Research Letters 2011, 6:216 http://www.nanoscalereslett.

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  • Ju Park et al. Nanoscale Research Letters 2011, 6:223 http://www.nanoscalereslett.com/content/6/1/223 NANO EXPRESS Open Access Optimal synthesis and characterization of Ag nanofluids by electrical explosion of wires in liquids Eun Ju Park1, Seung Won Lee2, In Cheol Bang2, Hyung Wook Park1* Abstract Silver nanoparticles were produced by electrical explosion of wires in liquids with no additive. In this study, we optimized the fabrication method and examined the effects of manufacturing process parameters.

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