Actually I have the related papers but the explanation about electrical bi-stability is not clear. Especially, I have not understood the I-V curve explanation.
bi-stability means two regions are stable under different conditions and switching between these domains is possible by electrical means which will be revealed in the I-V curves. Try to look at the I-V after making some simple constructions so that this will be clear...
Dear Pillai Vijayamohanan,
But what is the need for getting two stable state at the same voltage?
one may be meta-stable and the need arises because of switching between states for specific applications. For example, I can have an electrochromic film and by applying a particular voltage effect a transition to have a colour change. Similarly I can have a memory device working between these two domains...
Respected Pillai Vijayamohanan Sir,
Can you suggest a paper or book related to this Electrical bi-stability in memory devices to enhance this basic idea
Shamjid,
Here is a paper I wrote on a bi-stable rotaxane: DOI: 10.1166/jctn.2011.1867
My former lab mate, Michael Foster, wrote several papers regarding this.
In our specific case, we used a tetrathiofulvate (TTF) and napthalene (NAPH) containing "stick" with a catenane ring (CAT) physically (but not chemically) bound. The TTF and NAPH sites are both preferred binding sites for the CAT, one being preferred, however, due to large energy barriers to shuttling, the ring tends to stay where bound. A large enough potential can force the ring into a new preferred position, wherein it will remain until exposed to external stimuli.
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