We successfully implemented a one-transistor (1T) ferroelectric field effect transistor (FeFET) eNVM into a 28nm gate-first super low power (28SLP) CMOS technology platform using two additional structural masks. The electrical baseline properties remain the same for the FeFET integration and the JTAG-controlled 64 kbit memory shows clearly separated states. High temperature retention up to 250 degrees C is demonstrated and endurance up to 10(5) cycles was achieved. The FeFET unique properties make it the best candidate for eNVM solutions in sub-2x technologies for low-cost IoT applications
A chemofluidic oscillator circuit that employs a hydrogel‐based chemofluidic transistor for chemical‐fluidic coupling is presented. It shows a period between 200 and 1000 s and alcohol concentrations oscillating between 2 wt% and 10 wt%. Because of the direct interaction with chemistry, chemofluidic transistors have the potential to facilitate labs‐on‐chips with enhanced functionality and scalability.
Highlights• A new microfluidic oscillator based on smart hydrogels is introduced.• A piecewise-smooth, infinite dimensional dynamical system is developed to model the oscillator.• The resulting model is approximated by a discretization scheme based on the method of lines.• Numerical continuation techniques for non-smooth systems are applied via the toolbox TC-HAT.• The dynamics of the oscillator is studied in detail in the framework of applied bifurcation theory.
AbstractThis work concerns the modeling and dynamical study of a chemo-fluidic oscillator with the ability of coupling chemical and fluidic domains. The coupling is made possible by means of stimuli-responsive (also referred to as smart) hydrogels, which are able to change their volume under small variations of special thermodynamic parameters, in a reversible and reproducible manner. The paper presents a piecewise-smooth dynamical system describing the behavior of this chemo-fluidic oscillator. Specialized path-following algorithms are applied to study the periodic response of the system under parameter variations. Our investigation reveals that the origin of the oscillatory behavior is connected to the presence of a Hopf bifurcation in the system. Furthermore, the effect of several system parameters on the frequency of oscillation is studied in detail.
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