فهرس المقالات هادی ولادی


  • المقاله

    1 - Design and Simulation of Novel Optofluidic ring resonator for Biomolecular Detection
    Majlesi Journal of Telecommunication Devices , العدد 22 , السنة 6 , بهار 2017
         In This study, a label-free detection method by using a novel Optofluidic ring resonator sensor (OFRR) structure is presented. Optofluidic is a developed young research subject suitable to create an appropriate cooperation between optics and fluidics. The combinati أکثر
         In This study, a label-free detection method by using a novel Optofluidic ring resonator sensor (OFRR) structure is presented. Optofluidic is a developed young research subject suitable to create an appropriate cooperation between optics and fluidics. The combination of fluidic and optical methods achievable. by using the optofluidic methods makes it expedient to obtain an inventive type of sensors, which have been tried to have an ameliorate sensitivity, denseness and adaptivity.  OFRR is a recent detection method that integrates Optic and fluid technologies with low-limit and low-cost and small- sample volume detection sensitivity. The objective of this article is the detection of the tuberculosis by offering a unique and a novel useful structure that is able to fabricate. The material of the proposed structure is PDMA that is completely flexible polymer. The width of the waveguide, the waveguide length and width of the ring of the proposed structure respectively is 500nm, 250 nm, 1500 nm. Also, the inner radius of the resonator ring in 4700 nm. The simulation Result of proposed structure by Opti-FDTD software shown 649 nm/RIS for the slope of the sensitivity curve. تفاصيل المقالة

  • المقاله

    2 - Amplification of Output Voltage by Using Silicon Based Solar Cells, Piezoelectric and Thermoelectric Conversion Transducers: A Triple Energy Harvester
    Journal of Optoelectronical Nanostructures , العدد 2 , السنة 8 , تابستان 2023
    Abstract:
     We purpose a hybrid energy harvester made of silicon solar cell, piezoelectric and thermoelectric. Our simulations are carried out using the COMSOL software. For this purpose, MEMS, heat transfer and electromagnetic modules were used. We connected n أکثر
    Abstract:
     We purpose a hybrid energy harvester made of silicon solar cell, piezoelectric and thermoelectric. Our simulations are carried out using the COMSOL software. For this purpose, MEMS, heat transfer and electromagnetic modules were used. We connected nine piezoelectric, one thermoelectric and one solar cell modules in series to maximize the harvested energy and provide the appropriate voltage level. It is observed that the maximum electric current and voltage is about 200mA and 5V, respectively, which is equivalent to approximately 1W. The total obtained energy was amplified by two DC/DC converters and the voltage level increased to 5V.  Also, we theoretically proved that the use of an optical window (as top and bottom contact layers) based on photonic multilayer can control surface reflection. It is found that if we use two contact layers in the front and back of the solar cell, the transmittance increases from 33% (without contact layer) to 67% (with double contact layer). تفاصيل المقالة