Abstract: Described herein are a synthetic cascading bistable switches (Syn-CBS) circuit. In some aspects, the SynCBS circuit is single-strain circuit with two coupled self-activation modules to achieve two successive cell fate transitions. In other aspects, the SynCBS circuit is a two-strain circuit where the self-activation modules are divided in two cells instead of being expressed in a single cell. Also described are plasmids encoding the Syn-CBS circuits.

Abstract: The present disclosure provides a conductive paste for preparing flexible porous piezoresistive sensor, a method for making the same, and application thereof. The conductive paste includes a conductive carbon material, a sacrificial template and a high molecular polymer matrix. The high molecular polymer matrix includes a high molecular polymer and an organic solvent, and the mass ratio of the high molecular polymer to the organic solvent is 1:2 to 1:3; and based on the total mass of the conductive carbon material, the sacrificial template and the high molecular polymer, the mass percentage of the conductive carbon material is 2%-5%, the mass percentage of the sacrificial template is 75%-85%, and the mass percentage of the high molecular polymer is 10%-23%. This disclosure uses a sacrificial template with adjustable particle size to prepare conductive paste, greatly increasing number of nanopores or micropores after conductive paste is formed into a film.