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In this paper, a dielectric-modulated buried source horizontally double-gate TFET-based (DM-BSHDG TFET) biosensors is proposed for detection of biomolecules. The channel partially encloses the buried source, and the drain half surrounds the channel. Horizontally double gate is located above the source and channel. The performance of the DM-BDSTG TFET-based biosensors was evaluated by two-dimensional simulation of TCAD (ATLAS). Biomolecules can be distinguished due to the dielectric constants of different biomolecules placed in the cavity and will lead to different transfer characteristics of the device. The results show that the drain current sensitivity can reach 1.41 × 10 when the gate-source voltage is 2 V. In addition, the subthreshold swing sensitivity can reach 0.9. Therefore, the DM-BSHDG TFET-based biosensors can provide excellent detection and recognition capabilities.
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http://dx.doi.org/10.1021/acsomega.5c02005 | DOI Listing |
ACS Appl Mater Interfaces
September 2025
National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
In this study, we analyze InO thin-film transistors (InO-TFT) using synchrotron-based hard X-ray photoelectron spectroscopy (HAXPES) in conditions. A bottom-gate InO-TFT with a high- AlO gate dielectric, grown on thermally oxidized silicon (SiO/p-Si), was examined while operating at varying and . The results reveal that the In 3d core level binding energy varies along the horizontal channel length, driven by the potential gradient induced by .
View Article and Find Full Text PDFAdv Sci (Weinh)
September 2025
Technical University of Munich, TUM School of Natural Sciences, Department of Physics, Chair for Functional Materials, James-Franck-Str. 1, 85748, Garching, Germany.
Despite significant advancements in the power conversion efficiency (PCE) of FAPbI-based perovskite solar cells (PSCs), their commercialization remains hindered by stability issues. These challenges arise primarily from the phase transition of the α-phase to the δ-phase under operation. Alloying FAPbI with Cs to form FA-Cs perovskite (FACsPbI) emerged as a promising approach to enhance phase and thermal stability.
View Article and Find Full Text PDFCommun Biol
August 2025
Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, Leipzig, Germany.
The transition from the Bronze Age (BA) to the Iron Age (IA) on the Northeastern Iberian Peninsula is characterized by the emergence of cremation as the main funerary practice. Cultural attributes of a group, known as the Urnfield Culture, expanded from Central Europe to Northeastern Iberia during the Final Bronze Age (FBA), from ~1300 to ~850 cal BCE. Various hypotheses on the group's emergence exist, but cremations hinder DNA preservation.
View Article and Find Full Text PDFBiosensors (Basel)
August 2025
Department of Electrical and Computer Engineering, College of Engineering, University of Miami, Miami, FL 33146, USA.
We present a highly sensitive and selective gas sensor based on an advanced silicon-on-insulator tunnel field-effect transistor (SOI-TFET) architecture, enhanced through the integration of customized conducting polymers. In this design, traditional metal gates are replaced with distinct functional polymers-PPP-TOS/AcCN, PP-TOS/AcCN, PP-FE(CN)/HO, PPP-TCNQ-TOS/AcCN, and PPP-ClO/AcCN-which enable precise molecular recognition and discrimination of various target gases. To further enhance sensitivity, the device employs an oppositely doped source region, significantly improving gate control and promoting stronger band-to-band tunneling.
View Article and Find Full Text PDFSci Adv
August 2025
MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, Enschede, Netherlands.
Innovative approaches to study buried interfaces and heterogeneous interactions under reaction conditions are crucial for advancing energy and catalytic materials. Our near-ambient pressure x-ray photoelectron spectroscopy (NAP-XPS) setup is equipped with a tricolor x-ray source, with Al Kα, Ag Lα, and Cr Kα excitation energies, enabling information depth-selective operando and in situ analysis of solid-liquid, solid-gas, and solid-solid interfaces. We present three case studies to demonstrate the systems' capabilities.
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