The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The ability of synthesizing nanomaterials marked the beginning of the Nanotechnology era. Due to their extremely small sizes, nanomaterials present unique properties that are not seen in their bulk counterparts. However, understanding how nanomaterials behave in all kinds of biochemical reactions is the key to utilize them in potential applications. In this paper, the effects of gold, titanium dioxide...
Nanofluid is a promising candidate to become the working fluid of pulsating heat pipes, the physical properties should be known before application. Several methods of measuring thermal conductivity of liquid are compared, especially for the single and double transient hot-wire methods. The obtained thermal conductivities by single Φ50μm and Φ20μm wire are close to those by double Φ50μm wire. The suspension...
In this paper, we demonstrate and analyze the solubility and distribution of dried europium(III)-chelate dyed nanoparticles in mini channels of milled polystyrene (PS) cartridges. The particular objective for the study is to measure quantitatively the efficiency of the resuspension of dried nanoparticles from the surface of PS channels and to determine the homogeneity of the solute particles in a...
Nanosphere lithography has potential in many areas, and there have been many methods that deposit the colloidal suspension onto the substrate. However, it is important and still difficult to control the uniformity of the monolayer on a plane substrate. In this study, we have found a method for a uniform monolayer of polystyrene beads by confining the droplets with microwells. By simply controlling...
Bio-molecular recognition is detected by the unique optical properties of self-assembled gold nanoparticles on the unclad portions of an optical fiber whose surfaces are modified with a receptor. To enhance the performance of the sensing platform, the sensing element is integrated with microfluidic chips to reduce sample and reagent volume, to shorten response time and analysis time, as well as to...
This study present microfluidic synthesis of functional materials such as highly monodispersed hydrogel, hard sphere, microcapsule, Janus microsphere, or microfiber. The control of multiphase flows in the microfluidic device provides the defined volume of chemical reaction, which is useful methodology for the synthesis of novel functionalized materials. The précised formation of geometrical droplet...
Tin dioxide nanoparticles were synthesized by precipitation coupling with thermal decomposition methods. The Broussonetia papyrifera (L.) Vent pulp was used as the dispersant. Tin chloride pentrahydrate (SnCl4.5H2O) and ammonium hydroxide (NH4OH) were used as starting materials to complete the chemical reaction. The precipitate was filtered, washed with deionized water, dried at 80°C for 24h and calcined...
Pure ZnO, pure MgO and 5 wt%MgO/ZnO nanocomposites were produced by flame spray pyrolysis (FSP) in a single step using zinc naphthenate and magnesium acetate tetrahydrate as Zn and Mg precursors. The particle properties were analyzed by XRD, BET and TEM analyses. The sensing films were prepared by mixing the nanoparticles into an organic paste composed of ethyl cellulose and terpineol as a vehicle...
This study presents a new method for generating tunable and uniform magnetic alginate microspheres, which can be widely employed in the field of the bead-based bio sample pretreatment and enrichment process during the clinical diagnoses. A microfluidic device comprising microchannels and controllable moving-wall structures was fabricated by using MEMS processes. The key feature of the controllable...
This paper proposes a high surface area of reaction and three-phase zone electrode for micro direct methanol fuel cell (μDMFC) with nano structured carbon nanotubes (CNTs) and Nafion® for the utilization of catalysts. Dense and uniform growth of CNTs on the surface of Si plate can increase the reaction area by 2 orders of magnitude than plain Si plate. Pt nanoparticles deposited on CNTs by chemical...
Flame spray pyrolysis (FSP) is a very promising technique for synthesis of high purity nano-sized materials with controlled size and crystallinity in one step. FSP was employed to synthesize pure ZnO and niobium-doped ZnO (Nb/ZnO) nanoparticles containing 0.1-4 mol% Nb. ZnO is one of the most versatile and most widely applied as catalytic metal oxide. Precursor solutions of zinc naphthenate and niobium...
In this research, cerium oxide (CeO2) nanoparticles were synthesized by the homogeneous precipitation. Cerium nitrate hexahydrate and ammonia solution were used as precursors. A mixture of water and ethylene glycol was used as solvent. The ratio of ethylene glycol /water mixed solvent was 80% by volume of ethylene glycol. Pure CeO2 nanoparticles were yellow powder. Particle size was found to be in...
Novel ZnS/CeO2 nanocomposite samples with different molar ratios were synthesized by the homogeneous precipitation method and hydrothermal method. The molar ratio of ZnS to CeO2 are 0.2:0.8, 0.4:0.6, 0.5:0.5, 0.6:0.4, and 0.8:0.2. Phase composition, crystallinity, crystal size, and morphology of novel ZnS/CeO2 nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy...
It is widely accepted that self-assembling nanostructure of metals with well-defined spatial order is one of the promising ways for engineering new materials. Recent years revealed substantial progress in fabricating metal nanoparticles on ultrathin oxide films due to their ordered surface. In this work, we present the results on the adsorption of Pd nanoparticles on the ultrathin Al2O3 films prepared...
One of the major limitations for Atomic Force Microscopy (AFM) based nanoparticle pushing is that AFM only has one sharp tip as the end-effector. The interaction force between the nanoparticle and the tip is applied through a single point, which often leads the AFM tip to slip-away from the nanoparticle due to their small touch area. Then several minutes is needed to relocate the missed nanoparticle...
This paper describes the assembly of 2 nm gold nanoparticles between micro-fabricated planar electrodes by using dielectrophoresis (DEP). The optimal conditions for effectively dieletrophoretic manipulation have been established through theoretical analysis and experimental validation. In the theoretical analysis, the effect of Brownian motion was taken into consideration, as well as the electrothermal...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.