CMOS capacitive biosensors for highly sensitive biosensing applications.

Magnetic microbeads are widely used in biotechnology and biomedical research for manipulation and detection of cells and biomolecules. Most lab-on-chip systems capable of performing manipulation and detection require external instruments to perform one of the functions, leading to increased size and cost. This work aims at developing an integrated platform to perform these two functions by implementing electromagnetic microcoils and capacitive biosensors on a CMOS (complementary metal oxide semiconductor) chip.

A CMOS magnetic microbead-based capacitive biosensor array with on-chip electromagnetic manipulation.

Magnetic microbeads are widely used in biotechnology and biomedical research for manipulation and detection of cells and biomolecules. Most lab-on-chip systems capable of performing manipulation and detection require external instruments to perform one of the functions, leading to increased size and cost. This work aims at developing an integrated platform to perform these two functions by implementing electromagnetic microcoils and capacitive biosensors on a CMOS (complementary metal oxide semiconductor) chip.

The effects of electrical stimulation on neurite outgrowth of goldfish retinal explants.

The central nervous system (CNS) in adult mammals loses the ability to regenerate after injury. Although electrical stimulation (ES) has been shown to promote neural regeneration, the underlying mechanisms by which ES enhances CNS regeneration remain elusive. The aim of the present study was to investigate the effect of ES on neurite outgrowth of goldfish retinal explants.

Ultrasensitive and label-free detection of pathogenic avian influenza DNA by using CMOS impedimetric sensors.

This work presents miniaturized CMOS (complementary metal oxide semiconductor) sensors for non-faradic impedimetric detection of AIV (avian influenza virus) oligonucleotides. The signal-to-noise ratio is significantly improved by monolithic sensor integration to reduce the effect of parasitic capacitances. The use of sub-μm interdigitated microelectrodes is also beneficial for promoting the signal coupling efficiency.

5×5 CMOS capacitive sensor array for detection of the neurotransmitter dopamine.

This work presents miniaturized CMOS (complementary metal oxide semiconductor) capacitive sensors for detection of the neurotransmitter dopamine (DA) down to the sub-fM range. Sensing resolution is significantly enhanced by monolithic sensor integration to reduce the parasitic effect and the use of sub-μm interdigitated microelectrodes as the sensing interface. The 5 × 5 sensor array contains five designs of different electrode sizes and each design has five sensors.