Halfway and long haul targets in nanotechnology.


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See http://nano.xerox.com/nanotech/hydroCarbonMetabolism.html for further ... Review of the advancement of sub-atomic nanotechnology. The configuration and displaying of a ...
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´╗┐Moderate and long haul goals in nanotechnology Ralph C. Merkle Xerox PARC www.merkle.com

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Products Core sub-atomic assembling abilities Products Today Products Overview of the advancement of sub-atomic nanotechnology Products

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The conceptual objective Fabricate most structures that are indicated with sub-atomic subtle element and which are reliable with physical law Get basically every particle in the ideal spot Inexpensive assembling costs (~10-50 pennies/kilogram) http://nano.xerox.com/nano

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Two vital ideas Self replication (for ease) Programmable positional control (to make sub-atomic parts go where we need them to go)

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Complexity of self duplicating frameworks (bits) Von Neumann\'s all inclusive constructor about 500,000 Internet worm (Robert Morris, Jr., 1988) 500,000 Mycoplasma capricolum 1,600,000 E. Coli 9,278,442 Drexler\'s assembler 100,000,000 Human 6,400,000,000 NASA Lunar Manufacturing Facility over 100,000,000,000 http://nano.xerox.com/nanotech/selfRep.html

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A proposition for a sub-atomic positional gadget

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One encapsulation of the objective: Drexler\'s constructing agent Molecular PC Molecular constructor Positional gadget Tip science

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Something somewhat less complex: the hydrocarbon constructing agent We need to make jewel The union of precious stone utilizing CVD includes responsive species (carbenes, radicals) This requires a latent situation and positional control to avert side responses Focusing our consideration on solid hydrocarbons incredibly streamlines plan and displaying

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Major subsystems in a basic constructing agent skimming in arrangement Positional gadget Molecular instruments Barrier Trans-boundary transport/restricting destinations Neon admission Pressure incited ratchets Pressure equilibration

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The estimation of an objective: we can work in reverse from it (or: it\'s difficult to fabricate something in the event that you don\'t realize what it would appear that) Backward anchoring (Eric Drexler) Horizon mission philosophy (John Anderson) Retrosynthetic investigation (Elias J. Corey) Shortest way and other hunt calculations in software engineering "Meet in the center" assaults in cryptography

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The concentrate today: self replication and sub-atomic apparatuses Molecular devices are produced using feedstock molecule(s) Molecular instruments are made utilizing a current arrangement of sub-atomic devices Starting with one arrangement of sub-atomic devices, we should wind up with two full arrangements of sub-atomic devices http://nano.xerox.com/nanotech/hydroCarbonMetabolism.html

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A hydrogen deliberation device http://nano.xerox.com/nanotech/Habs/Habs.html

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Some other sub-atomic devices

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Thermal clamor, an established condition: s 2 = kT/k s is the mean positional blunder (~0.02 nm) k is Boltzmann\'s consistent (~1.38 x 10 - 23 J/K) T is the temperature (~300 K) k s is the firmness (~ 10 N/m) See page 91 of Nanosystems for a deduction and further examination

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Feedstock Acetone (dissolvable) Butadiyne (C 4 H 2 , diacetylene; wellspring of carbon and hydrogen) Neon (inactive, gives inward weight) "Vitamin" (move metal impetus, for example, platinum; silicon; tin) http://nano.xerox.com/nanotech/hydroCarbonMetabolism.html

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A basic restricting site for butadiyne

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These sub-atomic devices ought to have the capacity to blend an amazingly extensive variety of hardened hydrocarbons. http://nano.xerox.com/nanotech/hydroCarbonMetabolism.html

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Overview Start with sub-atomic instruments and butadiyne Finish with two arrangements of sub-atomic devices Assumes the accessibility of positional control in an idle domain (e.g., vacuum)

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Positioning and at first clinging to a particle Intermolecular powers must be utilized Access is required for the sub-atomic tool(s) which will first cling to the atom Once connected covalently to a sub-atomic device, further positional control can be accomplished by moving the sub-atomic apparatus To position butadiyne for its first bonds, think about a wiener in a sausage bun

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The main bonds to butadiyne Radicals could on a basic level append at any of the six iotas in butadiyne Carbenes could on a basic level supplement into any of the five bonds in butadiyne

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Creating two hydrogen deliberation devices

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Refreshing a hydrogen reflection device

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Separating two hydrogen reflection devices that are reinforced together

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Radicals weaker than the hydrogen reflection device can be made by abstracting a hydrogen from the fitting forerunner

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We can discard overabundance hydrogen by making hydrogen rich structures

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Extending a hydrogen reflection device

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Transferring a dimer from a polyyne to a cumulene (the sort of response expected to invigorate the carbene device)

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Parts conclusion We should have the capacity to orchestrate all devices from the accessible feedstock and a previous arrangement of sub-atomic devices Quantitative parts conclusion requires that such blend does not bring about an exhaustion of the prior arrangement of devices See http://nano.xerox.com/nanotech/hydroCarbonMetabolism.html for further examination

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Products Core sub-atomic assembling abilities Products Today Products Overview of the advancement of sub-atomic nanotechnology Products

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The outline and displaying of a basic constructing agent should be possible with existing abilities. This would: Clarify the objective Speed the advancement of the innovation Allow quick and ease investigation of configuration options Clarify what this innovation will have the capacity to do

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