The Experts below are selected from a list of 303 Experts worldwide ranked by ideXlab platform

Zhong Lin Wang - One of the best experts on this subject based on the ideXlab platform.

  • tribotronic triggers and sequential logic circuits
    Nano Research, 2017
    Co-Authors: Limin Zhang, Yao Kun Pang, Zhi-wei Yang, Chi Zhang, Zhong Lin Wang, Tao Zhou
    Abstract:

    In this paper, a floating-gate tribotronic transistor (FGTT) based on a mobile triboelectric layer and a traditional silicon-based field-effect transistor (FET) is proposed. In the FGTT, the triboelectric charges in the layer created by contact electrification can be used to modulate charge carrier transport in the transistor. Based on the FGTTs and FETs, a tribotronic negated AND (NAND) gate that achieves mechanical-electrical coupled inputs, logic operations, and electrical level outputs is fabricated. By further integrating tribotronic NAND gates with traditional digital circuits, several basic units such as the tribotronic S-R trigger, D trigger, and T trigger have been demonstrated. Additionally, tribotronic sequential logic circuits such as registers and counters have also been integrated to enable external contact triggered storage and computation. In contrast to the conventional sequential logic units controlled by electrical signals, contact-triggered tribotronic sequential logic circuits are able to realize direct interaction and integration with the external environment. This development can lead to their potential application in micro/nano-sensors, electromechanical storage, interactive control, and Intelligent Instrumentation.

F.x. Rius - One of the best experts on this subject based on the ideXlab platform.

  • Expert systems in trace analysis
    Analytica Chimica Acta, 1993
    Co-Authors: F.x. Rius
    Abstract:

    Abstract A brief overview of the fundamental principles of knowledge-based systems and their development and usefulness is given. The main differences from conventional computer programs are indicated together with the main advantages and drawbacks. A variety of recent applications of expert systems in trace analysis are reviewed, novel approaches to the field are reported and the future trends of these systems in the development of Intelligent Instrumentation are evaluated.

Liu Fei - One of the best experts on this subject based on the ideXlab platform.

  • Super-capacitor based power-down protection for Intelligent instruments
    Chinese Journal of Power Sources, 2010
    Co-Authors: Lin Maojiang, Yan Ping, Yi Runzhong, Liu Fei
    Abstract:

    A kind of super-capacitor based power-down protection was designed aiming to solve the contradiction of Intelligent Instrumentation for high stability,reliability requirements and harsh industrial environments.Super-capacitor was used as a back-up power in the system when the system lost power supply and corresponding peripheral circuits was designed for the super-capacitor's fast charging and discharging characteristics.BOOST convertor was applied for super-capacitor circuit to improve energy efficiency.Software was designed to check triggering signal and save essential data and close the system in the power-down protection.It is verified by experiment and applied successfully.

Junyi Zhai - One of the best experts on this subject based on the ideXlab platform.

  • Multibit tribotronic nonvolatile memory based on van der Waals heterostructures
    Nano Energy, 1
    Co-Authors: Mengmeng Jia, Yudong Liu, Pengwen Guo, Ying Lei, Wei Wang, Yaxing Zhu, Qijun Sun, Junyi Zhai
    Abstract:

    Abstract Low power and multifunctional nonvolatile memories are promising candidates for processing massive data in the Internet of Things era. However, the storage states in conventional memory devices are under the restricted control by electrical or optical signals. Herein, a new multibit tribotronic nonvolatile memory (T-NVM) based on a graphene/hexagonal boron nitride/molybdenum disulfide van der Waals heterostructure and triboelectric nanogenerator (TENG) is proposed. The programming/erasing states can be modulated by the triboelectric potential, which is determined by changing the distance between the two triboelectrification layers. Under the modulation of external mechanical actions, the device exhibits a high on/off ratio of 105 via manipulating mechanical distance from − 0.2 mm to + 0.2 mm, a long retention time up to 6000 s, a stable switching behavior for over 100 cycles, and a multilevel data storage capability of 14 stages by different external stimuli. Furthermore, a memory inverter circuit employing the triboelectric potential as input signals can serve as the conversion of logical signals. This work proves the great potential of tribotronic devices for direct interaction with external environment in lower power and broadening diverse applications of human-robot interactions, self-powered wearable devices, and Intelligent Instrumentation.

Jerry Workman - One of the best experts on this subject based on the ideXlab platform.

  • Review of Chemometrics Applied to Spectroscopy: Quantitative and Qualitative Analysis
    The Handbook of Organic Compounds, 2001
    Co-Authors: Jerry Workman
    Abstract:

    Chemometrics is described as the application of mathematical and statistical methods to improve chemical measurement processes and to extract useful chemical information from chemical and physical measurement data. Recent advances in this discipline have led to a new breed of analytical tools—microprocessor-controlled “Intelligent” Instrumentation and data-analysis systems. Chemometrics represents, in the broadest sense, the penetration of serious mathematical science into the realm of the chemist. This chapter summarizes the use of chemometrics in spectroscopy. Basic chemometric resources and techniques as applied to mass spectrometry, ultraviolet-visible spectrophotometry, and infrared spectroscopy (near-IR and mid-IR) are reviewed. The chapter covers general techniques, with a special emphasis on sample selection for calibration (teaching) sets and qualitative techniques. It also discusses quantitative analysis, and outlines the more advanced chemometric methods in detail. The chapter represents a general overview of the major topics associated with the use of chemometrics in spectroscopy. Although most chemometric methods could be applied to spectroscopic data, the focus of this chapter is those techniques that have been demonstrated using spectroscopic data.

  • Review of Chemometrics Applied to Spectroscopy: 1985-95, Part I
    Applied Spectroscopy Reviews, 1996
    Co-Authors: Jerry Workman, Paul R. Mobley, Bruce R. Kowalski, Rasmus Bro
    Abstract:

    INTRODUCTION Chemometrics can generally be described as the application of mathematical and statistical methods to 1) improve chemical measurement processes, and 2) extract more useful chemical information from chemical and physical measurement data. Recent advances in this discipline have led to a new breed of analytical tools– microprocessor controlled “Intelligent” Instrumentation. and data analysis systems. Chemometrics represents in the broadest sense the penetration of serious mathematical science into the realm of the chemist. Prior to the introduction of a formal subdiscipline of chemistry, termed chemometrics, chemists applied as much mathematics as they had available for research and problem solving, but in general, the use of statistical experimental design and data analysis were relegated to the engineer or the specialist statistician; chemists did chemistry, and life was simple. The current trend in scientific thinking across disciplines involves a multivariate approach. The world is not so s...