نتایج جستجو برای: micrometric particles
تعداد نتایج: 156828 فیلتر نتایج به سال:
TiO2 nanoparticles (NPs) are contained in different kinds of industrial products including paints, self-cleaning glasses, sunscreens. TiO2 is also employed in photocatalysis and it has been proposed for waste water treatment. Micrometric TiO2 is generally considered a safe material, while there is concern on the possible health effects of nanometric titania. Due to their small size NPs may migr...
Nano-science and nano-technology as well as the fine modelling of the structure and mechanics of materials from the nanometric to the micrometric scales use descriptions ranging from the quantum to the statistical mechanics. This paper revisits the modelling at these scales and points out the main challenges related to the numerical solution of such models that some times are discrete but invol...
Three unrelated sphingomyelin analogs spontaneously cluster into plasma membrane micrometric domains
In this contribution, we describe a novel approach to the problem of setting micrometric droplets in motion. First, this paper reviews the state-of-the-art methods to enable millimetric droplet motion, and investigates the scalability of the most promising techniques on the basis of preliminary experiments. Then, we propose a novel approach based on substrates with radial 3D pattern. In the pos...
A deep understanding of muzzle flow fields is essential for optimizing devices and projectile design. This characterization has been heretofore limited to local intrusive measurement techniques such as pressure measurements using pencil probes. Consequently, the quantitative experimental data are limited, so number numerical codes validated in this field. The objective present work demonstrate ...
The practical difficulties to use graphene in microelectronics and optoelectronics is that the available methods to grow graphene are not easily integrated in the mainstream technologies. A growth method that could overcome at least some of these problems is chemical vapour deposition (CVD) of graphene directly on semiconducting (Si or Ge) substrates. Here we report on the comparison of the CVD...
A calibration method for micro-topographic measuring of a surface is described. Based on fringe projection using a stereo-microscope, an unmagnified Talbot self-image of a Ronchi ruling is imaged on the surface target through one of the microscope oculars. It is well-known that if a linear fringe pattern is projected on a surface object, the fringes are deformed according to its topography. The...
The DuEl (Dust-Electron) device, a modified Penning-Malmberg trap for the confinement of dust-contaminated electron plasmas, is currently under construction at the University of Milano with the aim of investigating the dynamics of magnetized complex (dusty) electron plasmas [1]. The overall behaviour of such plasmas is heavily affected by the addition of a small fraction of micrometric or sub-m...
Concentric-Electrode Organic Electrochemical Transistors: Case Study for Selective Hydrazine Sensing
We report on hydrazine-sensing organic electrochemical transistors (OECTs) with a design consisting of concentric annular electrodes. The design engineering of these OECTs was motivated by the great potential of using OECT sensing arrays in fields such as bioelectronics. In this work, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-based OECTs have been studied as aqueous se...
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