183:, which when treated with CdS nanoparticles, see improved performance in their semiconductor materials through a reduction of the band gap energy. The usage of chemical deposition in particular allows for the crystallite orientation of CdS to be more favourable, though the process is quite time consuming. Research by S.A. Vanalakar in 2010 resulted in the successful production of cadmium sulfide nanoparticle film with a thickness of 139 nm, though this was only after the applied films were allowed to undergo deposition for 300 minutes. As the deposition time was increased for the film, not only was the film thickness found to increase, but the band gap of the resultant film decreased.
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Chemosynthesis can be applied in many different areas of research, including in positional assembly of molecules. This is where molecules are assembled in certain positions in order to perform specific types of chemosynthesis using molecular building blocks. In this case synthesis is most efficiently
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molecules are also preferred, which is when molecules undergo minimal external stress, which leads to the molecule having a low internal energy. There are two main types of synthesis: additive and subtractive. In additive synthesis the structure starts with nothing, and then gradually molecular
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dictated by the properties of the surrounding bath. As such, this method of nanoscale chemosynthesis is often implemented when these properties are desired, and can be used for a wide range of nanomaterials, not just lead sulfide, due to the adjustable properties.
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reinforces the view that this is feasible by pointing out that several alternate means of creating complex proteins, mineral shells of mollusks and crustaceans, etc., evolved naturally, not all of them dependent on photosynthesis and a
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building blocks are added until the structure that is needed is created. In subtractive synthesis they start with a large molecule and remove building blocks one by one until the structure is achieved.
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Pawar, S.B.; Shaikh, J.S.; Devan, R.S.; Ma, Y.R.; Haranath, D.; Bhosale, P.N.; Patil, P.S. (2011). "Facile and low cost chemosynthesis of nanostructured PBS with tunable optical properties".
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As explained previously, the usage of chemical bath deposition allows for the synthesis of large deposits of nanofilm layers at a low cost, which is important in the mass production of
139:, the likelihood of humans being able to design an entirely new one is considered (by these advocates) to be near certainty in the long run, and possible within a generation.
167:(PbS) films. CBD synthesis of these films allows for both cost-effective and accurate assemblies, with grain type and size as well as optical properties of the
159:(CBD). This process enables large-scale synthesis of thin film layers of a variety of materials, and has been especially useful in providing such films for
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of the natural phenomena above, and the entire class of non-photosynthetic chains by which complex molecules are constructed is described as
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occur due to random thermal motion, a class which encompasses almost all of modern synthetic chemistry. The human-authored processes of
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could be produced by a chain of non-biological reactions that have been designed using the basic model of biology.
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Merkle, Ralph (2000). "Molecular building blocks and development strategies for molecular nanotechnology".
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claim that an artificial process can likewise exploit a chain of long-term storage, short-term storage,
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and other natural processes create extremely complex molecules to the specifications contained in
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Random thermal (translational) motion of particles, with collisions acting as reaction "points"
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Jannasch, H. W.; Mottl, M. J. (1985-08-23). "Geomicrobiology of Deep-Sea
Hydrothermal Vents".
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Several methods of nanoscale chemosynthesis have been developed, a common variant of which is
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are mechanically manipulated to control reactions to human specification. Since
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Cellulose
Nanoparticles that can be synthesized through Chemosynthetic methods.
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
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