We show that the Coulomb interaction between two circuits separated by an insulating layer leads to unconventional thermoelectric effects, such as the cooling by thermal current effect, the transverse thermoelectric effect and Maxwell’s demon effect. The first refers to cooling in one circuit induced by the thermal current in the other circuit. The middle represents electric power generation in one circuit by the temperature gradient in the other circuit. The physical picture of Coulomb drag between the two circuits is first demonstrated for the case with one quantum dot in each circuit and it is then elaborated for the case with two quantum dots in each circuit. In the latter case, the heat exchange between the two circuits can vanish. Finally, we also show that the Maxwell’s demon effect can be realized in the four-terminal quantum dot thermoelectric system, in which the quantum system absorbs the heat from the high-temperature heat bath and releases the same heat to the low-temperature heat bath without any energy exchange with the two heat baths. Our study reveals the role of Coulomb interaction in non-local four-terminal thermoelectric transport.

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Abstract-To meet the real time and reliability requirements in the occasions containing high frequency disturbance and frequent changes of the parameters, this paper optimized the proportion and integral coefficients of fuzzy PID controller by combining the theory analysis with experts' experience. Simultaneously, the Fuzzy PID IP (Intellectual Property) Core based on Field Programmable Gate Array (FPGA) was implemented by using Verilog HDL and modular design method. Results prove the superiority of the optimization and the IP Core can be flexibly used in system design of SOPC (system on programmable chip).

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