Light-Sensitive Silicon Nanowire Array Field Effect Transistor for Glucose Detection

Ahn, Cheol Hyoun; Kulkarni, Atul; Kim, Hyeong‐U; Shin, Cheolmin; Xu, Yabin; Jung, Sungwon; Kim, Hyungchul; Kim, Taesung

doi:10.1142/s1793292014500994

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…The robust behaviors in silicon nanowires (SiNWs) material properties, such as high mechanical strength, 1 stability in thermal, 2 chemical 3 and biological 4 environments, unique thermoelectric performances, 5 enriched optical and electronic 6,7 behaviors pave the way for research as well as industrial pursuits. The unique sp 3 -bonded crystal structure and the low work function of SiNWs show it to be a potential candidate to be employed as a cold cathode material for¯eld emission device applications.…”

Section: Introductionmentioning

confidence: 99%

“…The unique sp 3 -bonded crystal structure and the low work function of SiNWs show it to be a potential candidate to be employed as a cold cathode material for¯eld emission device applications. 7,8 Over past few years, many other nanomaterials, such as aligned carbon nanotubes, 10 ultra-nanocrystalline diamond lms, [11][12][13] arrays of gallium nitride nanorods, 14 titanium dioxide nanotubes, 15 cone-shaped zinc oxide nanostructures, 16 tin oxide nanotubes 17 and needle-shaped molybdenum trioxide 18 are showing much more e±ciency in¯eld emission with very low turn-on¯eld. Moreover ion implantation, 19 metallic coating 20 and H 2 surface treatment on diamond lms 21 are observed to signi¯cantly enhance the electron¯eld emission (EFE) properties.…”

Section: Introductionmentioning

confidence: 99%

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Morphological Dependence of Field Emission Properties of Silicon Nanowire Arrays

Sahoo¹,

Marikani²

2016

NANO

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The electron¯eld emission (EFE) properties of vertically aligned arrays of silicon nanowires (SiNWs) grown from silicon substrate at di®erent gold sputtering periods of 0 s, 8 s, 15 s and 25 s at a rate of 10 nm/min by electroless metal deposition process were investigated. It has been observed that the transformation of silicon tips from irregular to highly dense and uniform cylindrical morphological nanostructures with an increase in Au sputtering periods. A signi¯cant enhancement in EFE properties of as-prepared arrays of SiNWs with the increase in Au sputtering periods is observed. The threshold¯elds for attaining current density of 0.1 mA cm À2 were decreased gradually as 32.38 Vm À1 , 29.37 Vm À1 and 23.19 Vm À1 for the arrays of SiNWs synthesized from Si substrate by Au coating of 8 s, 15 s and 25 s respectively. Moreover, from Fowler-Nordheim plot, the turn-on¯eld is observed to decrease from 16.56 V=m for as-prepared to 8.77 V=m for 25 s Au sputtered SiNW arrays. The e®ective work functions of the electron emitting array of SiNWs have been improved from 0.5 meV to 0.1 meV.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphological Dependence of Field Emission Properties of Silicon Nanowire Arrays

Sahoo¹,

Marikani²

2016

NANO

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“…The two nanomaterials of most concern today are silicon (Silicon nanowires-SINW) 114 and carbon (graphene and carbon nanotubes-CNTS). 115 SINW has proven to be highly sensitive for unlabeled and real-time inspection, but also has potential commercial potential due to its feasibility in mass production in the semiconductor industry.…”

Section: Glucose Monitoring Sensormentioning

confidence: 99%

Review—Glucose Monitoring Sensors: History, Principle, and Challenges

Jing

Chang

Liu

2022

J. Electrochem. Soc.

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Blood glucose monitoring is a valuable tool for managing diabetes. In recent years, with the increase of diabetics in the world, continuous glucose monitoring (CGM) of blood sugar changes has attracted more and more researchers' attention. Among the current technologies for measuring glucose, optical and electrochemical glucose sensors are the mainstream. Here, we introduce the history of optical, electrochemical, and other sensors such as field effect transistor sensors and their advantages and disadvantages, respectively. This review summarizes the research progress and main challenges of continuous glucose monitoring technology. We found that different optical techniques have different limitations which restricts the development of optical CGM. In contrast, electrochemical glucose sensors are more feasible and reliable in implementing CGM. Therefore, this review focuses on the development and shortcomings of electrochemical sensors, especially the promising direct electron transfer and the current commercial CGM. Hopefully, it will help readers sort out the future of CGM's development.

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“…Unfortunately, SiNW-FET is limited to the detection of analytes with a certain charge, and the specific detection of weakly charged or uncharged analytes remains a challenge [ 16 ]. It has been reported that the method of modifying glucose oxidase on the surface of SiNW-FET biosensors has been successfully used to measure uncharged low-molecular-weight molecular glucose with detection limits down to μM levels [ 17 , 18 ]. In addition, the limitation of low charge analytes is difficult to detect.…”

Section: Introductionmentioning

confidence: 99%

Polyethylene Glycol Functionalized Silicon Nanowire Field-Effect Transistor Biosensor for Glucose Detection

et al. 2023

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Accurate monitoring of blood glucose levels is crucial for the diagnosis of diabetes patients. In this paper, we proposed a simple “mixed-catalyzer layer” modified silicon nanowire field-effect transistor biosensor that enabled direct detection of glucose with low-charge in high ionic strength solutions. A stable screening system was established to overcome Debye screening effect by forming a porous biopolymer layer with polyethylene glycol (PEG) modified on the surface of SiNW. The experimental results show that when the optimal ratio (APTMS:silane-PEG = 2:1) modified the surface of silicon nanowires, glucose oxidase can detect glucose in the concentration range of 10 nM to 10 mM. The sensitivity of the biosensor is calculated to be 0.47 μAcm−2mM−1, its fast response time not exceeding 8 s, and the detection limit is up to 10 nM. This glucose sensor has the advantages of high sensitivity, strong specificity and fast real-time response. Therefore, it has a potential clinical application prospect in disease diagnosis.

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Light-Sensitive Silicon Nanowire Array Field Effect Transistor for Glucose Detection

Cited by 7 publications

References 26 publications

Morphological Dependence of Field Emission Properties of Silicon Nanowire Arrays

Morphological Dependence of Field Emission Properties of Silicon Nanowire Arrays

Review—Glucose Monitoring Sensors: History, Principle, and Challenges

Polyethylene Glycol Functionalized Silicon Nanowire Field-Effect Transistor Biosensor for Glucose Detection

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