Over 59 mV pH<sup>−1</sup> Sensitivity with Fluorocarbon Thin Film via Fluorine Termination for pH Sensing Using Boron‐Doped Diamond Solution‐Gate Field‐Effect Transistors

Chang, Y. H.; Iyama, Yutaro; Tadenuma, Kaito; Kawaguchi, Shuto; Takarada, Teruaki; Falina, Shaili; Syamsul, Mohd; Kawarada, Hiroshi

doi:10.1002/pssa.202000278

Cited by 6 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…20 Many research works have been developed to explore the application of diamond solution-gate filed-effect transistor (SGFET) in biosensing performance. [21][22][23] Compared with siliconbased ion-sensitive field FET (Si-ISFET), the conductive channels of diamond SGFET are exposed directly to the electrolyte solution without a gate insulator. 24 Since the channel surface of Si-ISFET must be covered by relatively thick insulating layers, which can protect against the invasion of ions from solution but causing a small capacitance, which restricts the charge translation from electrolyte to the channel surface, resulting a decrease of sensitivity.…”

mentioning

confidence: 99%

Partly-O-Diamond Solution-Gate Field-Effect Transistor as an Efficient Biosensor of Glucose

Zhang¹,

Du²,

Chang³

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

Assessment of glucose concentration is vital for diagnosis and treatment of diabetes mellitus. Because of the electrochemical advantages of diamond for biosensing, we fabricated a partly-oxygen-diamond solution-gate field-effect transistor to detect glucose. Partly-O-diamond was obtained from H-diamond by ultraviolet ozone treatment. Then, 1-pyrenebutyric acid–N-hydroxy succinimide ester and glucose oxidase were modified on the diamond surface. Finally, shifts of transfer characteristics were applied to determine glucose concentration. The as-prepared biosensor exhibited a wide linear response from 10-5 to 10-1 M with high sensitivity of -53 mV/log10 (glucose concentration). In addition, this biosensor showed good repeatability and stability in multiple detections.

show abstract

mentioning

confidence: 99%

Partly-O-Diamond Solution-Gate Field-Effect Transistor as an Efficient Biosensor of Glucose

Zhang¹,

Du²,

Chang³

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…The diamond SGFET device design is similar to those reported in our previous reports and is shown in Fig. 1 [12,15]. The polycrystalline diamond substrates were first cleaned in a mixture of nitric acid (HNO3) and sulfuric acid (H2SO4) with a ratio of 1:3 at 200 °C for 30 minutes.…”

Section: Methodsmentioning

confidence: 92%

“…We have reported diamond SGFETs where the semiconductor surface was directly immersed in electrolyte solutions and the drain current was controlled by an electric double layer capacitor at the diamond surface [10]. We have also reported diamond SGFETs utilizing various functional groups including hydrogen, oxygen, nitrogen, and fluorine to achieve excellent pH sensing capabilities or complete pH insensitivity [11][12][13][14][15]. Like most ISFETs, a silver/silver chloride (Ag/AgCl) reference electrode has been commonly used as the gate electrode for diamond SGFETs.…”

Section: Introductionmentioning

confidence: 99%

Ion-Sensitive Stainless Steel Vessel for All-Solid- State pH Sensing System Incorporating pH-Insensitive Diamond Solution Gate Field-Effect Transistors

et al. 2023

View full text Add to dashboard Cite

An all-solid-state pH sensing system utilizing a stainless steel vessel (SUS304) and a pHinsensitive diamond solution-gate field-effect transistor (SGFET) is presented here to explain the interaction between stainless steel vessel and field-effect transistor (FET) pH sensors for the first time. A pH sensitive ionsensitive field-effect transistor (ISFET) was first used to show the change of the sensing behavior from 47.78 mV/pH to -4.73 mV/pH when using an Ag/AgCl electrode and stainless steel vessel as the gate, respectively. This intriguing sensing behavior was investigated by developing large and small-signal equivalent circuit models in a transistor circuit for both the Ag/AgCl and the stainless steel vessel gate. The result shows that the targeted ion change ΔQh corresponding to the pH sensitivity has been offset which explains the phenomenon observed when using the pH sensitive ISFET with the stainless steel vessel. We then hypothesize that combining a pH insensitive device with the stainless steel vessel gate should show a pH sensitivity close to the Nernst response. To validate this, a pH insensitive diamond SGFET was then fabricated and combined with the stainless steel vessel for pH measurements. The system demonstrates a high pH sensitivity at -54.18 mV/pH across a wide range of pH solutions (pH 2-12) and remains stable in elevated temperatures when measured with a potentiostat setup at 80 °C. The results also suggest that this all-solid-state sensing system has great potential to be used in the food and beverage industry where stainless steel is widely employed due to its excellent corrosion resistance, low cost, and high sensing capabilities.

show abstract

“…The sensitivities of 41 and 52 µS/pH (CaCl 2 ) for red and bentonite soil samples were achieved with response and recovery times of 10 and 30 s, respectively, indicating the potential applicability of the PANI/SU-8 composite microsensor to measuring variations in soil pH important for precision agriculture applications. Chang et al proposed a new method utilizing a fluorocarbon thin film via fluorine termination and boron-doped diamond (BDD) solution-gate field effect transistors (SGFETs) for pH sensing with potential agriculture applications [112]. The developed device demonstrated high pH sensitivities of 67.4 and 34.9 mV/pH in acid and alkaline pH regions, respectively.…”

Section: Ph Soil Salinity and Other Macroelementsmentioning

confidence: 99%

Recent Advances in Chemical Sensors for Soil Analysis: A Review

et al. 2022

View full text Add to dashboard Cite

The continuously rising interest in chemical sensors’ applications in environmental monitoring, for soil analysis in particular, is owed to the sufficient sensitivity and selectivity of these analytical devices, their low costs, their simple measurement setups, and the possibility to perform online and in-field analyses with them. In this review the recent advances in chemical sensors for soil analysis are summarized. The working principles of chemical sensors involved in soil analysis; their benefits and drawbacks; and select applications of both the single selective sensors and multisensor systems for assessments of main plant nutrition components, pollutants, and other important soil parameters (pH, moisture content, salinity, exhaled gases, etc.) of the past two decades with a focus on the last 5 years (from 2017 to 2021) are overviewed.

show abstract

Over 59 mV pH⁻¹ Sensitivity with Fluorocarbon Thin Film via Fluorine Termination for pH Sensing Using Boron‐Doped Diamond Solution‐Gate Field‐Effect Transistors

Cited by 6 publications

References 26 publications

Partly-O-Diamond Solution-Gate Field-Effect Transistor as an Efficient Biosensor of Glucose

Partly-O-Diamond Solution-Gate Field-Effect Transistor as an Efficient Biosensor of Glucose

Ion-Sensitive Stainless Steel Vessel for All-Solid- State pH Sensing System Incorporating pH-Insensitive Diamond Solution Gate Field-Effect Transistors

Recent Advances in Chemical Sensors for Soil Analysis: A Review

Contact Info

Product

Resources

About

Over 59 mV pH−1 Sensitivity with Fluorocarbon Thin Film via Fluorine Termination for pH Sensing Using Boron‐Doped Diamond Solution‐Gate Field‐Effect Transistors

Cited by 6 publications

References 26 publications

Partly-O-Diamond Solution-Gate Field-Effect Transistor as an Efficient Biosensor of Glucose

Partly-O-Diamond Solution-Gate Field-Effect Transistor as an Efficient Biosensor of Glucose

Ion-Sensitive Stainless Steel Vessel for All-Solid- State pH Sensing System Incorporating pH-Insensitive Diamond Solution Gate Field-Effect Transistors

Recent Advances in Chemical Sensors for Soil Analysis: A Review

Contact Info

Product

Resources

About

Over 59 mV pH⁻¹ Sensitivity with Fluorocarbon Thin Film via Fluorine Termination for pH Sensing Using Boron‐Doped Diamond Solution‐Gate Field‐Effect Transistors