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pages, marked with GREEN headings, are published for comment
and criticism. These are not our final findings; some of
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Overview of
all studies: Because of the largely unexpected transformational
power of molecular manufacturing, it is urgent to understand the issues
raised. To date, there has not been anything approaching an adequate study
of these issues. CRN's recommended series of thirty
essential studies is organized into five sections, covering fundamental
theory, possible technological capabilities, bootstrapping potential,
product capabilities, and policy questions. Several preliminary conclusions
are stated, and because our understanding points to a crisis, a parallel
process of conducting the studies is urged.
CRN is actively
looking for researchers interested in performing or assisting with this
work. Please contact CRN Research Director Chris
Phoenix if you would like more information or if you have comments
on the proposed studies.
Study
#10
What
will be required to develop nucleic acid manufacturing and products?
This study will explore
the development of nucleic acid manufacturing.
What is required
(research and software) to automate the design, production, and characterization
of nucleic acid molecules directly from specification of shape and properties?
What actuation
techniques (chemical, electrical, other method?) are available? How fast,
reliably, forcefully can they operate?
Preliminary answer
DNA-conjugation actuation
is fairly slow but very programmable. Actuation by redox sliding
rings (catenane, rotaxane) is faster and allows either chemical or electrical
actuation. This can provide significant (~nN?) force; see the "elevator". Several
bio-based motors are being investigated. These are switched by simple
chemicals and may be hard to select or control.
Subquestion
What chemistry
(steric mechanism) could be used to allow programmable fabrication? How
small could the selectable units be? (Atoms? Nucleic acid monomers? Short
chains?) Can the selected fabrication chemistry produce the required mechanism?
Preliminary answer
Good questions...
Subquestion
How much
additional design would be required to scale up/duplicate a fabrication
system for large-scale production?
Preliminary answer
The system might
be attached to beads for large surface area. This might be more, or less,
difficult than scaling up other surface-catalyzed chemical synthesis processes.
Subquestion
How much
additional design would be required for a scaled-up system to produce
monolithic heterogeneous products?
Preliminary answer
This might require
nanoscale computation to control local actuators, and better attachment,
localization, and control of the individual production systems. Biomimetic
(e.g. amorphous computing) and mechanistic approaches should both be investigated;
very little work has been done to date.
The situation is
extremely urgent. The stakes are unprecedented, and the world is unprepared.
The basic findings of these studies should be verified as rapidly as possible
(months, not years). Policy preparation and planning for implementation,
likely including a crash development program, should begin immediately.
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