| Autor: |
Gangrong Li, Qianhui Wei, Shuhua Wei, Jing Zhang, Qingxi Jin, Guozhi Wang, Jiawei Hu, Yan Zhu, Yun Kong, Qingzhu Zhang, Hongbin Zhao, Feng Wei, Hailing Tu |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Nanomaterials, Vol 12, Iss 12, p 2070 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2079-4991 |
| DOI: |
10.3390/nano12122070 |
| Popis: |
In this study, we report a pH-responsive hydrogel-modified silicon nanowire field-effect transistor for pH sensing, whose modification is operated by spin coating, and whose performance is characterized by the electrical curve of field-effect transistors. The results show that the hydrogel sensor can measure buffer pH in a repeatable and stable manner in the pH range of 3–13, with a high pH sensitivity of 100 mV/pH. It is considered that the swelling of hydrogel occurring in an aqueous solution varies the dielectric properties of acrylamide hydrogels, causing the abrupt increase in the source-drain current. It is believed that the design of the sensor can provide a promising direction for future biosensing applications utilizing the excellent biocompatibility of hydrogels. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
