{"title":"Nano sense-TFET: HJ-DGVTFET based salivary and serum CerbB-2 biomarker detection for breast cancer","authors":"Karthik Nasani , Brinda Bhowmick , Puspa Devi Pukhrambam , Puja Ghosh","doi":"10.1016/j.cjph.2025.09.010","DOIUrl":null,"url":null,"abstract":"<div><div>Breast cancer is a prevalent and potentially life-threatening disease, emphasizing the importance of early detection and monitoring. A key target for the identification of diagnostic bioanalytes is the CerbB-2 bioanalyte (BA), whose overexpression has been linked to aggressive types of breast cancer. In this study, a highly sensitive biosensor based on an In<sub>1−x</sub>Ga<sub>x</sub>As/InP heterojunction Dual Gate Vertical tunnel FET (HJ-DGVTFET) is used to detect the breast cancer bioanalyte, CerbB-2, electrically in serum or saliva. In this work, interface charge modulation effect in HJ-DGVTFETs with integrated nano compatibility biosensors is considered for reliable, precise, and fast recognition of antigens in body fluids using blood serum rather than saliva. The suggested biosensor has a double cavity etched under the double gate structure to immobilize bioanalyte. This enhances the bioanalyte influence on the source-channel tunnelling rate and the electrical parameters of the suggested biosensor. Device sensitivity has been examined for various CerbB-2 concentrations in blood and saliva environments. According to our research, an III-V In<sub>1−x</sub>Ga<sub>x</sub>As/InP hetero junction with mole fraction x factor of 0.47 increases the likelihood of tunnelling. It enhances gate control on channel to get a higher sensitivity and I<sub>ON</sub>/I<sub>OFF</sub> ratio.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"98 ","pages":"Pages 99-107"},"PeriodicalIF":4.6000,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0577907325003612","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Breast cancer is a prevalent and potentially life-threatening disease, emphasizing the importance of early detection and monitoring. A key target for the identification of diagnostic bioanalytes is the CerbB-2 bioanalyte (BA), whose overexpression has been linked to aggressive types of breast cancer. In this study, a highly sensitive biosensor based on an In1−xGaxAs/InP heterojunction Dual Gate Vertical tunnel FET (HJ-DGVTFET) is used to detect the breast cancer bioanalyte, CerbB-2, electrically in serum or saliva. In this work, interface charge modulation effect in HJ-DGVTFETs with integrated nano compatibility biosensors is considered for reliable, precise, and fast recognition of antigens in body fluids using blood serum rather than saliva. The suggested biosensor has a double cavity etched under the double gate structure to immobilize bioanalyte. This enhances the bioanalyte influence on the source-channel tunnelling rate and the electrical parameters of the suggested biosensor. Device sensitivity has been examined for various CerbB-2 concentrations in blood and saliva environments. According to our research, an III-V In1−xGaxAs/InP hetero junction with mole fraction x factor of 0.47 increases the likelihood of tunnelling. It enhances gate control on channel to get a higher sensitivity and ION/IOFF ratio.
期刊介绍:
The Chinese Journal of Physics publishes important advances in various branches in physics, including statistical and biophysical physics, condensed matter physics, atomic/molecular physics, optics, particle physics and nuclear physics.
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