How big could the molecule be? Well, let’s not forget IBM’s recent announcement of plans to template entire computer chips with surface-attached DNA. That implies that the molecule – a single, engineered molecule – could be centimeter-scale!
A few years ago, Drexler (IIRC) described two ways of fastening molecules together. One is a protein structure called a zinc finger, wherein several amino acids (cysteine and/or histidine) bind to a single zinc ion. Another is a pair of paired carbon atoms, which rearrange bonds when hit by light to form a link across the pair. There are many other ways of fastening molecules, as well.
Brian Wang is a Futurist Thought Leader and a popular Science blogger with 1 million readers per month. His blog Nextbigfuture.com is ranked #1 Science News Blog. It covers many disruptive technology and trends including Space, Robotics, Artificial Intelligence, Medicine, Anti-aging Biotechnology, and Nanotechnology.
Known for identifying cutting edge technologies, he is currently a Co-Founder of a startup and fundraiser for high potential early-stage companies. He is the Head of Research for Allocations for deep technology investments and an Angel Investor at Space Angels.
A frequent speaker at corporations, he has been a TEDx speaker, a Singularity University speaker and guest at numerous interviews for radio and podcasts. He is open to public speaking and advising engagements.