There is nowhere else in emerging technology, but in Quantum-dot Cellular Automata, one can find high speed, low power operation, and high packaging density, which deals with electrostatic interaction between electrons within a cell. Literature survey lacks in hazards free design of QCA circuit. Hazards create ambiguous and unpredictable output, which can be avoided. This work considers both hazards and hazards-free asynchronous sequential circuits; both are compared in terms of kink energy, and a better one has been proposed. The circuit simulation has been verified in the QCADesigner tool.

翻译：在新兴技术领域中，唯有量子点细胞自动机能够实现高速、低功耗运行及高封装密度，其工作原理基于单元内电子间的静电相互作用。现有文献缺乏针对QCA电路的无险象设计研究。险象会产生模糊且不可预测的输出，而该问题可被避免。本研究同时考虑带险象与无险象的异步时序电路，通过扭结能量对两者进行比较，并提出更优方案。电路仿真已通过QCADesigner工具验证。