Papers by Keyword: Nanomachine

Abstract: A nanomachine is an assembly of a discrete number of supramolecular components designed to perform mechanical like movements as a consequence of appropriate external stimuli. In this research work we wish report synthesis of a part of nanomachines are based on interlocked macrocycle named rotaxanes, catenanes, pseudorataxane and knots, that Bis aza thiacrown compound (5) was synthesized by macrocyclic diamide (4) and 2, 6-dicarbonyldicholoride pyridine in dry CH2Cl2 and was refluxed in presence of Et3N in good yield. The structures of these compounds were confirmed by IR, 1H NMR, 13C NMR and elemental analysis.

Abstract: Till-date research in communications industry has mainly focused on systems based on electromagnetic propagation. However, in nanotechnology the scales are very minute, hence it needs further research that whether these concepts apply or not. So far, molecular communications research has studied the propagation of individual molecules between closely spaced transmitters and receivers as embedded in a fluid medium. Using these concepts, scientists are now investigating into nanomachines, nanomedicines, nanorobotics, and bio-chips which have enabled to further the computer science communications with biologically inspired algorithms. If timely parallels can be drawn between molecular communications and electrical communications there is potential for cross-learning and an opportunity to pioneer new developments. This paper aims to bring forth the key principles in molecular communication and their relationship to electrical communications as out-of-the-box philosophy for academicians and students.

Abstract: the term "nanomotors" refers macromolecules that consume energy in order to perform certain specific cations. nanomachines could play a major role in the future of electronics, medicine and communications. The sulfoxide (1) was prepared by reaction p-cresol with SOCl2 in 65%, bisphonle (2) was prepared with reduction compound (1). Treatment of bisphenole (2) with methyl chloroacetate at refluxed gave dimethyl ester (3) in 98% yield. Macrocycle (4) in 70% yield was prepared by diamidation of diester (3) with diethylentriamine, Lariat ethers (5) and (6) were synthesized by reaction of macrocyle (4) with decasanoylechloride and ecasonoylechloride in 49% and 45% yield.

Abstract: Creatures have evolved extremely intelligent and complex adaptive systems for conducting their movements. They are protein motors with typical sizes of a few tens of nanometers. Protein motors include three major protein families, myosin, kinesin and dynein, which participate in a wide range of cellular processes, using energy from the hydrolysis of adenosinetriphosphate ATP. To harness these protein motors to power nanometer-scale devices, we have investigated effective and non-destructive methods for immobilizing protein motors on surfaces and to arrange the output of these motors, e.g. force and movement, to be in a defined direction. We found NEB-22 to be useful for retaining the abilities of protein motors to support the movement of protein filaments. We fabricated various patterns of tracks of NEB-22 on coverslips and protein motors were introduced and immobilized on glass surface. The trajectories of protein polymers were confined to these tracks. Simple patterns readily biased and guide polymer movement confining it to be unidirectional. In addition, having used dynein c purified from Chlamydomonas flagellar axoneme, we showed that microtubules driven by surface-bound dynein were self-organized into dynamic streams through collisions between the microtubules and their subsequent joining.

Abstract: A brief review of fascinating properties of fullerene is presented on the basis of the concept of effectively non-paired electrons. A versatile chemistry of fullerenes follows from the regioselectivity of their atoms and the uniqueness of donor-acceptor abilities. Computational synthesis of the fullerene derivatives is discussed. Applications of the basic concepts to medicinal applications of fullerenes as well as their magnetic properties and ability to form technomimetic species are considered.