Sensor for Continuous and Real-Time Monitoring of Biomolecule Permeation Through Ultrathin Silicon Nanoporous Membranes

Ratchagar, Noel Prashant; Fidal, V T; Bhadra, Priyanka; Ghosh, Ananya; Chadha, Anju; Bhattacharya, Enakshi

doi:10.1109/jsen.2019.2900285

Cited by 6 publications

(1 citation statement)

References 61 publications

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“…Gas sensors are widely used in many fields, such as civil [6], industrial, and environmental monitoring. For these kinds of harmful gases, it is very important to prepare gas sensors to detect NOx for real-time detection [7][8][9]. Due to its good stability, high sensitivity to detection, low cost, small volume, and portable belt, the gas-solid sensor offers an extensive field of application [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Zhang

Tian

Zhang

et al. 2021

Preprint

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Density functional theory calculations have been made to investigated the adsorption and sensing properties of harmful nitrogen oxides (NO, NO2) on rhodium (Rh) doped hexagonal boron nitride (BN) to explore the feasibility of Rh-doped BN (Rh-BN) based gas sensor. For each gas molecule, various adsorption positions and orientations were examined. The favorable adsorption configuration has been established and the corresponding adsorption energy has been calculated. Besides, to understand the adsorption mechanism, The properties such as electron density, the energy band structure, state density of states, and charge transfer of the adsorption system were investigated in greater detail. The calculations indicate that the most stable structure is that the Rh atom located directly above the N atom, and a stable chemical bond with a length of 2.096 Å formed between the Rh atom and N atom, with a significant binding energy (𝐸𝑏) of -1.561 eV. Then, adsorption performance of Rh-BN monolayer upon nitrogen oxides is in order as NO2 > NO, with the adsorption energy (𝐸𝑎) of -3.919 eV and -3.318 eV, respectively. This indicates that the Rh-BN single layer possesses ideal adsorption and sensing properties. Furthermore, by doping the Rh atom, many levels of impurities are introduced into the intrinsic BN band structure, thereby improving the interaction between BN and adsorbed gas molecules. Following adsorption of NO and NO2, the band gap (Eg) of the doping system is wider. It has been demonstrated that gas adsorption reduces the electrical conductivity of the system, but increases the sensitivity of the system. The above calculation and analysis are of great importance for the exploration of the Rh-BN single layer as innovative gas detection material.

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Section: Introductionmentioning

confidence: 99%

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Zhang

Tian

Zhang

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Adsorption of NO and NO₂ on Rh‐Doped Hexagonal Boron Nitride Monolayers: A First‐Principles Study

et al. 2021

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Density functional theory (DFT) calculations have been made to investigate the adsorption and sensing properties of harmful nitrogen oxides (NO, NO 2 ) on rhodium (Rh) doped hexagonal boron nitride (BN) to explore the feasibility of constructing Rhdoped BN (Rh-BN) based gas sensors. For each gas molecule, various adsorption positions and orientations were examined. The calculations illustrate that the most stable structure is that the Rh atom is located directly above the N atom, and a stable chemical bond with a length of 2.096 Å formed between the Rh atom and N atom, with significant binding energy (E b ) of À 1.561 eV. Moreover, the adsorption performance of the Rh-BN monolayer towards nitrogen oxide is in the order as NO 2 > NO, with E a of À 3.919 eV and À 3.318 eV, respectively. This indicates that the Rh-BN single layer possesses ideal adsorption and sensing properties. Furthermore, by doping the Rh atom, impurities are introduced into the intrinsic BN band structure, which improves the interaction between BN and adsorbed gas molecules. Following the adsorption of NO and NO 2 , the bandgap (E g ) of the doped BN is wider, which indicates that gas adsorption reduces the conductivity of the system, but enhances the sensitivity of the system. The above calculation and analysis are of great importance for the exploration of the Rh-BN monolayer as an innovative gas detection material.

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Optimizing oxide capping layer for tuning pore formation in silicon nanoporous membranes

Ghosh

Kumar

Kannan

et al. 2021

ISSS J Micro Smart Syst

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Sensor for Continuous and Real-Time Monitoring of Biomolecule Permeation Through Ultrathin Silicon Nanoporous Membranes

Cited by 6 publications

References 61 publications

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Adsorption of NO and NO₂ on Rh‐Doped Hexagonal Boron Nitride Monolayers: A First‐Principles Study

Optimizing oxide capping layer for tuning pore formation in silicon nanoporous membranes

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Sensor for Continuous and Real-Time Monitoring of Biomolecule Permeation Through Ultrathin Silicon Nanoporous Membranes

Cited by 6 publications

References 61 publications

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Adsorption of NO, NO2 on Rh Embedded h-BN Monolayer: A First-Principles Study

Adsorption of NO and NO2 on Rh‐Doped Hexagonal Boron Nitride Monolayers: A First‐Principles Study

Optimizing oxide capping layer for tuning pore formation in silicon nanoporous membranes

Contact Info

Product

Resources

About

Adsorption of NO and NO₂ on Rh‐Doped Hexagonal Boron Nitride Monolayers: A First‐Principles Study