Browsing by Author "Nowshin, Nadia"

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    Effects of Series resistance, Effective Mobility and Output Conductance on Si-NWFET Based on Y-function Technique
    (Engg Journals Publications, 2011) Ahmad, Habib Muhammad Nazir; Arifuzzman, AKM; Nowshin, Nadia; Hossain, Chowdhury Akram
    This paper deals with a technique that extracts the MOSFET parameter using the Y-function technique, in conjunction with the drain current, the transconductance data and the series resistance () in silicon nanowire FET’s (Si-NWFET). This technique relies on combining drain current and output conductance, which enables reliable values of the threshold voltage (), mobility (), mobility attenuation coefficient (), the series resistance () to be obtained. The extracted drain current, effective mobility total resistance and output conductance values are shown through MATLAB simulation. The extracted results have been shown in good agreement with simulation which expresses the validity of our proposed technique. The technique only requires a single device for extraction of () and the iteration procedure for fitting the data.
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    Spin Coated Multi-Walled Carbon Nanotube Patch Antenna for Breast Cancer Detection
    (John Wiley and Sons, 2023-10-27) Hasan, Raja Rashidul; Jasmine, Jasika; Saleque, Ahmed Mortuza; Eshan, Sumit Hassan; Tusher, Raja Tariqul Hasan; Zabin, Sadia; Nowshin, Nadia; Rahman, Md. Abdur; Tsang, Yuen Hong
    Early detection of breast cancer can be a life-saving measure for many patients. The inaccessibility of X-rays, magnetic resonance imaging (MRI), and other medical facilities in many resource-constrained areas hinders the early detection of breast cancer. In this paper, the use of a rectangular patch antenna for breast cancer detection is proposed by using multiwall carbon nanotubes (MWCNTs) as patch material. The proposed antenna is designed by CST software which is (30 × 40 × 1.66) mm in dimension. A breast model is designed including tumor and cancerous tumors by specific tissue properties for observing the antenna performance in different cases. In free space, the return loss of the designed antenna is observed at −33.414 dB. Moreover, the S11 is examined in a normal breast, a breast including a normal tumor, and a breast including a cancerous tumor is −32.641 dB, −34.94 dB, and −35.22 dB respectively. It can be utilized on a human body phantom model due to its adaptability and reduced radiation properties. The proposed antenna is miniature in size, cost-effective, easily portable, and eco-friendly. It can be used as a first screening tool for breast cancer patients, particularly in resource-constrained regions.