Nanotechnology based products can improve the current construction materials. Nanotechnology in construction
These two properties make MOF’s interesting materials for catalysis. Developments on a number of methods have been made in making MOF’s catalytically active. These have ranged from the use of catalytically active metal nano partials located in the pores of the
The slot openings a shut with fibrous wedges to prevent the conductor from plying out due to the high centrifugal force produced during the rotation of the armature, in presence of supply current and field. The commutator of dc motor is a cylindrical structure made up of copper segments stacked together, but insulated from each other by mica. Its main function as far as the dc motor is concerned is to commute or relay the supply current from the mains to the armature winding housed over a rotating structure through the brushes of dc
• Higher dispersion stability with predominant Brownian motion of particles. • Reduced pumping power as compared to pure liquid to gain equivalent heat transfer intensification. • Reduced particle clogging as compared to regular slurries, thus promoting system miniaturization. • Adjustable properties, including thermal conductivity and surface wettability, by varying particle concentrations to suit different applications. Nanotechnology is being used or considered for use in many applications targeted to provide more efficient energy supplies and uses.
If m=0,nano tube are called as the ZIGZAG NANOTUBES. And if n=m nano tubes are called as the ARMCHAIR NANOTUBES .else they are called as CHIRAL. SWNTs are an very important variety of carbon nanotube because as the most of their properties change significantly with the
Analytical Study of Field Shaper in Electromagnetic Welding Rajesh.N, Student, Dept. of Mechanical Engineering AMC Engineering college, Bangalore-560083 Email: firstname.lastname@example.org Shanthala K, Research scholar, Dept. of Mechanical Engineering, AMC Engineering college, Bangalore-560083 Email: email@example.com Abstract- Electromagnetic Welding (EMW) is a promising and relatively new manufacturing technology which is advantageous over conventional welding in many ways. EMW is a type of impact joining process which makes use of rapid energy source to accelerate and cause collision between two different metals at very high velocities by removing the layer of oxidation. The important characteristic of this process is non-contact
With the help of this method, it is possible to get information about the type of reactions observed in the system like thermodynamics of redox processes, kinetics of heterogeneous electron-transfer reactions, and on coupled chemical reactions or adsorption processes. Cyclic voltammetry is often the first experiment performed in an electroanalytical study. In particular, it offers a rapid location of redox potentials of the electro active species, and convenient evaluation of the effect of media upon the redox process [1-2]. Cyclic voltammetry is an technique where the potential applied at the working electrode is swept between two chosen potential limits and the change in current is monitored. This is done at a constant rate known as the scan rate.
The aim of this work is to study the aggregation based self assembly of novel Naphthalimide (NI) derivatives. NIs are well-known semiconductor materials which have fascinated substantial attentions both from scientific and technological points of view. Because of excellent fluorescent properties,15 large stokes shift and high photo stability. NI derivatives are potential compounds having application in electronic devices as molecular semiconductors and are functional materials for organic light emitting diodes,16 optical disks,17 photovoltaic elements18 and electro photographic photoreceptors.19 2. REVIEW OF LITERATURE Molecular self-assembly is a process in which separate or linked components molecules (or molecules) spontaneously form ordered aggregates and no external intervention; the interactions involved generally are non-covalent. Here, the structure of the assembly determined by the molecular structure.20 Synthesis creates molecules; like ways self-assembly constructs ordered varieties of macromolecules.
Abstract Nano thin films have found a vast application in today’s world. Thin film studies have directly or indirectly advanced many new areas. Thin films due to its different properties in nano range provide a large scope to be used in miniature size devices. In comparison to monolayer thin films, multilayer thin films are supposed to exhibit far more enhanced properties. The purpose of this paper is to review the fabrication techniques, advantages and applications of multilayer thin film.
CHAPTER-2 REVIEW OF LITERATURE 2.1 Nanotechnology: Nanotechnology is a multidisciplinary field that includes a vast and diverse array of devices that derived from engineering, physics, chemistry, and biology leading to the development of structures, devices and systems that have novel functional properties by size ranging between 1 and 100 nm (Neethirajan and Jayas 2010; Borm et al, 2006; Ducan 2011). Nanotechnology involves the manipulation of materials at nanometer sizes leading to the fabrication of nanodevices to enhance their performance. In 1959, the seminal lecture, entitled “There’s Plenty of Room at the Bottom”, by Richard Feynman was widely acknowledged as a key event in the development of the field of nanotechnology (Kricka and Fortina