In this study, we explored the potential of applying biosensors based on silicon nanowire field-effect transistors (bio-NWFETs) as molecular absorption sensors. Using quercetin and Copper (Cu) ion as an example, we demonstrated the use of an opto-FET approach for the detection of molecular interactions. We found that photons with wavelengths of 450 nm were absorbed by the molecular complex, with the absorbance level depending on the Cu concentration. Quantitative detection of the molecular absorption of metal complexes was performed for Cu concentrations ranging between 0.1 μM and 100 μM, in which the photon response increased linearly with the copper concentration under optimized bias parameters. Our opto-FET approach showed an improved absorbance compared with that of a commercial ultraviolet-visible spectrophotometry.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9573373 | PMC |
| http://dx.doi.org/10.3390/s22197219 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High Current Gain MoS Bipolar Junction Transistor Based on Metal-Semiconductor Schottky Contacts.
Nano Lett
December 2024
State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha 410082, China.
Bipolar junction transistors (BJTs) are crucial components in high-power electronic applications. However, while two-dimensional (2D) semiconductors with exceptional electrical properties have been extensively studied in field-effect transistors, their application in BJTs has received far less attention. In this study, we demonstrate high-gain MoS BJTs based on metal-semiconductor Schottky contacts.
View Article and Find Full Text PDFP-Type Vertical FETs Realized by Using Fermi-Level Pinning-Free 2D Metallic Electrodes.
Nano Lett
December 2024
SKKU Advanced Institute of Nano Technology and Department of Nano Science and Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea.
In two-dimensional (2D) nanomaterial electronics, vertical field-effect transistors (VFETs), where charges flow perpendicular to the channel materials, hold promise due to the ease of forming ultrashort channel lengths by utilizing the thinness of 2D materials. However, the poor performance of p-type VFET arises from the lack of a gate-field-penetrating electrode with suitable work functions, which is essential for VFET operation. This motivated us to replace graphene (work function of ∼4.
View Article and Find Full Text PDFA step towards non-invasive diagnosis of diabetes mellitus using synthesized MOF-MXene hybrid material with extended gate field-effect transistor integration.
J Mater Chem B
December 2024
Laboratory of Sensors, Energy and Electronic devices (Lab SEED), Department of Physics and Nanotechnology, SRMIST, Kattankulathur 603203, Tamil Nadu, India.
The increasing demand for non-invasive and non-enzymatic glucose sensors is driven by the objective of eliminating the need for blood pricks from the body and enabling enzyme-free detection of glucose for diagnosing diabetes mellitus. To address this need, we synthesized Ni MOF-MXene (Ni) hybrid material through a one-pot synthesis method, which acts as a catalyst to detect salivary glucose using an extended gate field effect transistor (EGFET) method. The resulting sensor exhibits good selectivity towards glucose over common interfering molecules such as sucrose, fructose, maltose, uric acid, and ascorbic acid under physiological conditions in saliva.
View Article and Find Full Text PDFThe Influence of Alkyl Spacers and Molecular Weight on the Charge Transport and Storage Properties of Oxy-Bithiophene-Based Conjugated Polymers.
Angew Chem Int Ed Engl
December 2024
Department of Physics and Centre for Processable Electronics, Imperial College London, SW7 2AZ, London, United Kingdom.
Conjugated polymers (CPs) with polar side chains can conduct electronic and ionic charges simultaneously, making them promising for bioelectronics, electrocatalysis and energy storage. Recent work showed that adding alkyl spacers between CP backbones and polar side chains improved electronic charge carrier mobility, reduced swelling and enhanced stability, without compromising ion transport. However, how alkyl spacers impact polymer backbone conformation and, subsequently, electronic properties remain unclear.
View Article and Find Full Text PDFHighly Oriented WS Monolayers for High-Performance Electronics.
Adv Mater
December 2024
School of Electronic Science and Engineering, College of Engineering and Applied Sciences, National Laboratory of Solid-State Microstructures, and Collaborative Innovation Center of Advanced Microstructure, Nanjing University, Nanjing, 210023, China.
2D transition-metal dichalcogenide (TMDC) semiconductors represent the most promising channel materials for post-silicon microelectronics due to their unique structure and electronic properties. However, it remains challenging to synthesize wide-bandgap TMDCs monolayers featuring large areas and high performance simultaneously. Herein, highly oriented WS monolayers are reproducibly synthesized through a templated growth strategy on vicinal C/A-plane sapphire wafers.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!