Tag Archives: [European Research Consortium for Informatics and Mathematics

Pourable electronics?

A group of scientists at Ruhr Universtät Bochum (RUB) have won a European Union Competition Call for proposals in Unconventional Computing.

A new concept to me, I looked for a description of ‘unconventional computing’ and found this by Susan Stepney in an April 2011 issue of ERCIM [European Research Consortium for Informatics and Mathematics] News,

Despite being formulated post-relativity and post-quantum mechanics, classical Turing computation is essentially based in classical physics. This is understandable given the source of its abstraction, but today’s nano-scale computer components are embodied in the quantum world. …

The Turing model was inspired by a single paradigm: the actions of human clerks. Unconventional computation can be inspired by the whole of wider nature. We can look to physics (from general relativity and quantum mechanics, to annealing processes, analogue computing, and on to fully embodied computation), to chemistry (reaction-diffusion systems, complex chemical reactions, DNA binding), and to biology (bacteria, flocks, social insects, evolution, growth and self-assembly, immune systems, neural systems), to mention just a few.

Here’s a description of the competition that these scientists entered, from the Unconventional Computation (UCOMP) page on the Future and Emerging Technology (FET) website,

Nature (e.g. living cells), and our physical environment in general, show many unconventional ways of information processing, such as those based on (bio-)chemical, natural, wetware, DNA, molecular, amorphous, reversible, analogue computing, etc. These are generally very sophisticated, ingenious and highly effective for specific purposes, but sufficient knowledge (either from a theoretical or an engineering perspective) to properly exploit, mimic, or adapt these systems, is lacking.

Proposals should develop alternative approaches for situations or problems that are challenging or impossible to solve with conventional methods and models of computation (i.e. von Neumann [John von Neumann], Turing [Alan Turing]). Typical examples include computing in vivo, and performing massively parallel computation.

Here’s how the winning project is described in the Aug. 29, 2012 news item on Nanowerk,

First place in an EU competitive call on “Unconventional Computing” was awarded to a collaborative proposal coordinated by Prof. John McCaskill from the RUB Faculty of Chemistry and Biochemistry. The project MICREAgents plans to build autonomous self-assembling electronic microreagents that are almost as small as cells. They will exchange chemical and electronic information to jointly direct complex chemical reactions and analyses in the solutions they are poured into. This is a form of embedded computation – “to compute is to construct” – in which for example the output is a particular catalyst or coating needed in the (input) local chemical environment. The EU supports the project within the FP7 programme with 3.4 million Euros for three years. Four research groups at RUB will join forces with top teams across Europe, from Israel and New Zealand.

Bit of a challenge understanding it, eh? The RUB Aug. 29, 2012 press release (it originated the news item on Nanowerk), offers some background information about some of the ideas and work leading to the winning collaboration,

John von Neumann envisioned information devices that can construct more complex machines than themselves, in his theory of self-reproducing automata2, but he did not arrive at a robust architecture for this. Modern initiatives towards Living Technology, exploiting the core properties of living systems to push back this frontier, have been spearheaded by RUB in the past decade. McCaskill cofounded (2004-5) the European Centre for Living Technology in Venice (ECLT), an ongoing multi-university institution of which RUB is a member. He has also helped to link up a world-wide community on Sustainable Personal Living Technology (2010). This initiative requires a fundamental integration of molecular construction and information processing and thereby of chemistry and ICT (information and communication technology). Currently, RUB is assembling a roadmap in an EU coordination action (COBRA) for the area of chem-bio ICT, and indeed this integration is most developed in biological organisms. The MICREAgents project represents the next major research program towards these overarching initiatives, one that could change the level of fine-grained algorithmic control in chemical construction, bringing the important social goal of sustainable personal fabrication one step closer.

Here’s a description of what the scientists are planning to do (from the RUB press release),

In order to create this programmable microscale electronic chemistry, MICRE-Agents (Microscopic Chemically Reactive Electronic Agents) will contain electronic circuits on 3D microchips (called lablets, diameter ≤ 100 μm) that self-assemble in pairs or like dominos to enclose transient reaction compartments, using the electronics to control chemical access, surface coatings and reactions via physical and chemical processes such as electroosmosis, electrowetting and electrochemistry. Chemicals can be selectively concentrated, processed and released into the surrounding solution, under local electronic control, in a similar way to which the genetic information in cells controls local chemical processes. The reversible pairwise association in solution of electronic surfaces in the nanometer range will also be used to avoid the prohibitive energetic costs of broadcast communication, allowing lablets to transfer information (including heritable information) from one to another. The lablet devices will integrate transistors, supercapacitors, energy transducers, sensors and actuators, involving electronically constructed nanofilms, and will be essentially genetically encoded, translating electronic signals into constructive chemical processing and recording the results of this processing. [emphais mine] Instead of making chemical reactors to contain chemicals, the smart MICREAgents will be poured into chemical mixtures, to organize the chemistry from within. Ultimately, such microreactors, like cells in the bloodstream, will open up the possibility of controlling complex chemistry from the inside out.

I’m far out of my comfort zone with this material so these questions may not be relevant but I wonder how the lablets, which will self-assemble and integrate supercapacitors, transistors, transducers, etc., will be constituted and how they will be produced. No details are offered in the RUB press release but there is this paragraph, which seems to be discussing future applications,

MICREAgents will provide an unconventional form of computation that microscopically links reaction processing with computation in autonomous mobile smart reactors. This corresponds to a radical integration of autonomous chemical experimentation, a very recent research area, and represents a novel form of computation intertwined with construction. The self-assembling smart micro reactors can be programmed for molecular amplification and other chemical processing pathways, that start from complex mixtures, concentrate and purify chemicals, perform reactions in programmed cascades, sense completion, and transport and release products to defined locations. The project defines a continuous achievable path towards this ambitious goal, making use of a novel pairwise local communication strategy to overcome the limitations of current smart dust and autonomous sensor network communication. It will provide a technical platform spawning research in new computing paradigms that integrate multilevel construction with electronic ICT.

Based on the description of the competition, they seem to be working towards integration of electronics with materials in a way that mimics nature/the human body. It almost seems that this work could lead to buildings and other constructions that are sentient in some fashion or other.