A precision micropositioning system with a high displacement resolution and wide motion range has been required for industrialized applications for a long time. This paper discusses the design and the characteristics of a new piezodriven precision micropositioning stage utilizing flexure hinges. Two-grade amplifying and a monolithic symmetrical mechanism are adopted in the design. An analytical model is presented and a series of formulae for the static and dynamic behaviour of the stage are derived. Based on the theoretical analysis, the optimum design schema is put forward. The experimental demonstration to study the performance of the stage is described, and the method for reducing nonlinearity errors is proposed. The experimental results are in close agreement with those predicted by the theoretical analysis.

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Electronic marketing (eM) is a flourishing phenomenon that is gaining intense concern because of a significant impact on organizational performance. Over the past few decades, the relevance of eM has been observed in numerous fields (e.g., consumers, organizational strategy, advertisement, and overall philosophy of management to understand the insights globally). To effectively maneuver the field, all stakeholders, particularly academicians and practitioners, must comprehend the current position of the eM theory and practices for dynamic utilization. A systematic bibliometric analysis can serve this issue by providing a holistic view of the publication trend and its trajectory in terms of various themes, including citations and publication metrics. This study analyzes the bibliometric data from 2000 to 2019 to reveal the most productive countries, universities, authors, journals, and prolific publications in electronic marketing. To this end, VOS viewer software was used to visualize the mapping based on co-citation, bibliographic coupling (BC), and co-occurrence (CC). The primary addition of this research is to provide an overview of eM tendencies and paths that may help researchers know the tendencies and future research directions worldwide.

High-performance actuation is always desirable in a dexterous high-precision manipulation system. In this paper, we first develop a single-degree-of-freedom piezoelectric translator composed of a piezoelectric stack, a monolithic leaf spring and a preload mechanism. The displacement resolution reached by this translator is better than 10 nm, while its natural frequency is over 2 kHz. Based on the developed piezoelectric translator, a micro-manipulator is then designed, which is capable of producing micro-motions in six degrees of freedom. The design characteristics and kinematics of this micro-manipulator are investigated. An effective kinematic model used for the real-time control is presented, and the operation performance of the micro-manipulator is discussed further.

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