Related Experiment Video
Updated: May 25, 2026
11:25
Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
Published on: April 21, 2016
Characterization of functional biointerface on silicon nanowire MOSFET
Shu-Ping Lin1, Mao-Chen Liu, Tien-Yin Chi
1Institute of Biomedical Engineering, National Chung Hsing University, Taichung 40227, Taiwan. splin@dragon.nchu.edu.tw
Summary
Researchers developed a novel biointerface using modified nanowire-based metal-oxide-semiconductor field-effect transistors (NW-MOSFETs) for enhanced pH sensing and selective cell growth. This advancement paves the way for next-generation neuronal biosensors in bioelectronics.
Area of Science:
- Bioelectronics
- Materials Science
- Biotechnology
Background:
- Developing biocompatible interfaces is crucial for advancing bioelectronic medical applications.
- Nanowire-based metal-oxide-semiconductor field-effect transistors (NW-MOSFETs) show promise for biosensing.
- Surface modification techniques are key to creating functional biointerfaces.
Purpose of the Study:
- To modify NW-MOSFET surfaces for pH sensing and create a selective biointerface.
- To investigate the use of 3-aminopropyl trimethoxysilane (APTMS) and polylysine for surface functionalization.
- To evaluate the potential for developing advanced neuronal biosensors.
Main Methods:
- Surface modification of NW-MOSFETs using APTMS self-assembled monolayers (SAMs).
- Immobilization of polylysine (PDL or PLL) on APTMS-modified surfaces.
- Characterization using electrical measurements, ESCA, cell biocompatibility tests, and fluorescent imaging.
Main Results:
- APTMS modification enhanced NW-MOSFETs for pH sensing.
- Successful creation of a biointerface via polylysine immobilization on APTMS-modified surfaces.
- Verified amide bonding and demonstrated selective PC12 cell growth on the functionalized interface.
Conclusions:
- The developed polylysine-APTMS modified NW-MOSFETs provide a highly selective biointerface for cell growth.
- This approach offers significant insights for the future development of neuronal biosensors.
- The study highlights the potential of functionalized NW-MOSFETs in bioelectronic applications.
More Related Videos
09:14Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices
Published on: December 7, 2017
10:45Fabrication of a Solution-gated Indium-Tin-Oxide-based One-piece Transistor Enabling Sensitive Biosensing
Published on: August 29, 2025
Related Concept Videos
01:17Characteristics of MOSFET
Metal-oxide-semiconductor field-effect Transistors, or MOSFETs, play a critical role in electronic circuits. They are primarily utilized for amplifying and switching signals.
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...
01:16MOSFET
The Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) plays a pivotal role in modern electronics thanks to its versatility and efficiency in controlling electrical currents. This device, also known as IGFET, MISFET, and MOSFET, has three main terminals: the Source, Drain, and Gate. MOSFETs are classified into n-channel or p-channel types based on the doping characteristics of their substrate and the source or drain regions.
In an n-MOSFET, the structure includes n-type source and drain...
In an n-MOSFET, the structure includes n-type source and drain...
01:22MOSFET: Enhancement Mode
Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
01:25MOS Capacitor
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
01:20MOSFET: Depletion Mode
Depletion-mode MOSFETs represent a unique subset of MOSFET technology, functioning fundamentally differently from their enhancement-mode counterparts. Unlike enhancement MOSFETs, which require a positive gate-source voltage (Vgs) to turn on, depletion-mode MOSFETs are inherently conductive and "normally on" devices.
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity arises...
The primary characteristic of depletion-mode MOSFETs is their ability to conduct current between the drain and source terminals without gate bias. This inherent conductivity arises...
01:22Biasing of FET
Biasing a Junction Field Effect Transistor (JFET) is crucial for setting operational parameters and ensuring efficient functioning in electronic circuits. JFETs are characterized by using a single carrier type in N-channel or P-channel configurations, where the channel is surrounded by PN junctions. These junctions are central to the device's ability to control current flow.
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...
In an N-channel JFET, the structure consists of N-type material forming the channel on a P-type substrate, with the gate...