نتایج جستجو برای: suspended materials

تعداد نتایج: 455800  

Journal: :Science and technology of advanced materials 2008
Kazuhiko Iwai Akbar Eskandarpour Manabu Usui Kento Sugiura

A force and/or torque are induced in a material under the imposition of a magnetic field. Their magnitudes are different from those acting on the surrounding materials because of the difference in their physical properties. Therefore, a magnetic field is a powerful tool for controlling a second phase in a mother phase such as particles suspended in a liquid. In this paper, we focus on two proce...

Journal: :ACS nano 2007
Santosh Pabba Anton N Sidorov Scott M Berry Mehdi M Yazdanpanah Robert S Keynton Gamini U Sumanasekera Robert W Cohn

In a two-step method, carbon nanotubes, inorganic nanowires, or graphene sheets are connected between two anchor points to form nanomaterial air bridges. First, a recently developed method of forming directionally oriented polymer nanofibers by hand-application is used to form suspended composite polymer-nanomaterial fibers. Then, the polymer is sacrificed by thermally induced depolymerization ...

2017
Rasim Mirzayev Kimmo Mustonen Mohammad R A Monazam Andreas Mittelberger Timothy J Pennycook Clemens Mangler Toma Susi Jani Kotakoski Jannik C Meyer

Two-dimensional (2D) materials have considerably expanded the field of materials science in the past decade. Even more recently, various 2D materials have been assembled into vertical van der Waals heterostacks, and it has been proposed to combine them with other low-dimensional structures to create new materials with hybridized properties. We demonstrate the first direct images of a suspended ...

Journal: :Polish journal of occupational medicine and environmental health 1993
H Woźniak E Wiecek J Stetkiewicz K Wyszyńska

The aim of this investigation was to quantify the carcinogenic and mutagenic activity of antigorite occurring in the form of admixtures in different mineral raw materials (serpentinite, magnesite, dolomite and nickel ore). The carcinogenicity of dusts was evaluated after intraperitoneal injections of 5 mg (mice) or 20 mg (rats) of dust suspended in saline. A pathomorphological examination was p...

2004
J. A. WARRICK L. A. K. MERTES D. A. SIEGEL C. MACKENZIE

A technique is presented for estimating suspended sediment concentrations of turbid coastal waters with remotely sensed multi-spectral data. The method improves upon many standard techniques, since it incorporates analyses of multiple wavelength bands (four for Sea-viewingWide Field of view Sensor (SeaWiFS)) and a nonlinear calibration, which produce highly accurate results (expected errors are...

2014
Dunzhu Xia Cheng Yu Lun Kong

This review surveys micromachined gyroscope structure and circuitry technology. The principle of micromachined gyroscopes is first introduced. Then, different kinds of MEMS gyroscope structures, materials and fabrication technologies are illustrated. Micromachined gyroscopes are mainly categorized into micromachined vibrating gyroscopes (MVGs), piezoelectric vibrating gyroscopes (PVGs), surface...

2007
Shawn D. Newsam Eric Pernice Jacek Jasinski Valerie Leppert

Advances in nanotechnology have resulted in a variety of exciting new nanomaterials, such as nanotubes, nanosprings and suspended nanoparticles. Characterizing these materials is important for refining the manufacturing process as well as for determining their optimal application. The scale of the nanocomponents makes high-resolution imaging, such as electron microscopy, a preferred method for ...

2009
Rubina Sultan A. D. Avery B. L. Zink

We present thermal conductivity measurements of micromachined 500 nm thick silicon-nitride Si–N beams suspended between two Si–N islands, in the temperature range from 77 to 325 K. The measured thermal conductivity, k, of Si–N at high temperatures is in good agreement with previously measured values for Si–N grown by low-pressure chemical vapor deposition, but behaves much differently as temper...

2010
Roozbeh Dargazany Mikhail Itskov

A filled rubber network consists of polymer chains which are suspended between filler aggregates. In this contribution, the nonlinear elastic behavior of the aggregated filler particles inside the rubber matrix is investigated. Previously, by using scaling theory, the influence of initial length and fractal dimension of aggregates on the elastic response of aggregated structures was studied. He...

Journal: :Advanced materials 2017
Kyungnam Kang Kyle Godin Young Duck Kim Shichen Fu Wujoon Cha James Hone Eui-Hyeok Yang

Transition metal dichalcogenides (TMDs) have emerged as promising materials to complement graphene for advanced optoelectronics. However, irreversible degradation of chemical vapor deposition-grown monolayer TMDs via oxidation under ambient conditions limits applications of TMD-based devices. Here, the growth of oxidation-resistant tungsten disulfide (WS2 ) monolayers on graphene is demonstrate...

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