Browsing by Author "Yang, Fan"

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  • 868.3 Mhz short-range radio for sensor networks
    (2007) Yang, Fan
     Helsinki University of Technology | Master's thesis
    A short range radio for wireless network application is designed in this thesis. The short range radio's structure is mainly composed by Microcontroller MSP430F1611 and Radio Transceiver TDA5250. Microcontroller work as a master and Radio as a slave. Microcontroller configure Radio transceiver's function through I2C bus. Data Transmission between Microcontroller and Radio is based on the UART hardware functional module. Radio signal transmission was in FSK mode. A test platform for testing BER performance is set up. Receiver's Sensitivity and BER performance is measured. The design was tested and verified in the test platform.
  • Emerging semiconductor ionic materials tailored by mixed ionic-electronic conductors for advanced fuel cells
    (2024-12) Bibi, Bushra; Nazar, Atif; Zhu, Bin; Yang, Fan; Yousaf, Muhammad; Raza, Rizwan; Yousaf Shah, M. A.K.; Kim, Jung Sik; Afzal, Muhammad; Lei, Yongpeng; Jing, Yifu; Lund, Peter; Yun, Sining
     A2 Katsausartikkeli tieteellisessä aikakauslehdessä
    Mixed ionic-electronic conductors (MIECs) play a crucial role in the landscape of energy conversion and storage technologies, with a pronounced focus on electrode materials’ application in solid oxide fuel cells (SOFCs) and proton-conducting ceramic fuel cells (PCFCs). In parallel, the emergence of semiconductor ionic materials (SIMs) has introduced a new paradigm in the field of functional materials, particularly for both electrode and electrolyte development for low-temperature, 300–550 ​°C, SOFCs, and PCFCs. This review article critically delves into the intricate mechanisms underpinning the synergistic relationship between MIECs and SIMs, with a particular emphasis on elucidating the fundamental working principles of semiconductor ionic membrane fuel cells (SIMFCs). By exploring critical facets such as ion-coupled electron transfer/transport, junction effect, energy bands alignment, and theoretical computations, it casts an illuminating spotlight on the transformative potential of MIECs, also involving triple charge conducting oxides (TCOs) in the context of SIMs and advanced fuel cells (FCs). The insights and findings articulated herein contribute substantially to the advancement of SIMs and SIMFCs by tailoring MIECs (TCOs) as promising avenues toward the emergence of high-performance SIMFCs. This scientific quest not only addresses the insistent challenges surrounding efficient charge transfer, ionic transport and power output but also unlocks the profound potential for the widespread commercialization of FC technology.
  • Study on applicability of end corrections of extended inlet and outlet of expansion chamber hydraulic noise suppressor
    (2019-11-15) Yang, Fan; Pietola, Matti; Deng, Bin
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    At present, a study on the end corrections of extended inlets and outlets of expansion chamber gas mufflers is relatively mature. However, such a research for an expansion chamber hydraulic suppressor has not been made yet. A coaxial and a non-coaxial expansion chamber configurations were introduced into hydraulic systems in this paper, and one-dimensional (1D) analytical approach was used to construct mathematical models of these structures and to verify it by experiments. After that, combined with the finite element method (FEM), researches on whether end corrections of the structures are applicable or not were studied.