High selectivity of N-doped ZnO nano-ribbons in detecting H2, O2 and CO2 molecules: Effect of negative-differential resistance on gas-sensing

Tit, Nacir; Othman, Wael; Shaheen, Alaa; Ali, Muhammad

doi:10.1016/j.snb.2018.04.175

Cited by 48 publications

(14 citation statements)

References 53 publications

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“… 3 , 4 In recent years, zinc oxide (ZnO), one of the II-VI compounds, has attracted great attention because of its desirable n-type semiconducting property. 5 Increasingly, graphene-like ZnO is explored and theoretically investigated with unique electronic and optical properties, 6 − 8 indicating its superior potential for gas sensing, energy storage, and catalysis. Moreover, it has been reported that single-layer and bilayer ZnO could be experimentally prepared by the deposition of Zn on a Au (111) surface using X-ray photoelectron spectroscopy and scanning tunneling microscopy, 9 which stimulates the study of ZnO monolayers as a novel 2D member for application in many fields.…”

Section: Introductionmentioning

confidence: 99%

First-Principles Insight into Pd-Doped ZnO Monolayers as a Promising Scavenger for Dissolved Gas Analysis in Transformer Oil

Zhou

Zhang

2020

ACS Omega

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ZnO monolayers with desirable n-type semiconducting properties are full of potential for sensing applications. In this work, we investigate using first-principles theory the adsorption and sensing behaviors of Pd-doped ZnO (Pd-ZnO) monolayers with two typical dissolved gases, namely, H 2 and C 2 H 2 , to explore their sensing use for dissolved gas analysis in transformer oil. For Pd doping on the pristine ZnO monolayer, the T O site is identified as the most stable configuration with an E b of −1.44 eV. For the adsorption of H 2 and C 2 H 2 , chemisorption is determined given the large adsorption energy ( E ad ) and formation of new bonds. Analyses of the charge density difference and density of state provide evidence of the strong binding force of Pd–H and Pd–C bonds, while band structure analysis provides the sensing mechanism of the Pd-ZnO monolayer as a resistance-type sensor for H 2 and C 2 H 2 detection with high electrical responses. Also, analysis of the work function (WF) provides the possibility of selective detection of H 2 and C 2 H 2 using a Pd-ZnO monolayer-based field-effect transistor sensor given the opposite changing trend of the WF after their adsorption. Our work may broaden the application of ZnO-based gas sensors for application in the field of electrical engineering.

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Section: Introductionmentioning

confidence: 99%

First-Principles Insight into Pd-Doped ZnO Monolayers as a Promising Scavenger for Dissolved Gas Analysis in Transformer Oil

Zhou

Zhang

2020

ACS Omega

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“…In the modern era, the increased interaction between humans and technological devices has motivated the development of several sensing devices, e.g., temperature (Moser and Gijs, 2007), humidity (Han et al, 2012), accelerometers (James et al, 2004), and gas sensors (Tit et al, 2018;Shaheen et al, 2020). Recently, tactile sensing has gained significant interest due to its potential impact on MIS grasping and manipulation, among other applications.…”

Section: Tactile Sensing In Minimally Invasive Surgerymentioning

confidence: 99%

Tactile Sensing for Minimally Invasive Surgery: Conventional Methods and Potential Emerging Tactile Technologies

Othman¹,

Lai²,

Abril³

et al. 2022

Front. Robot. AI

Self Cite

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As opposed to open surgery procedures, minimally invasive surgery (MIS) utilizes small skin incisions to insert a camera and surgical instruments. MIS has numerous advantages such as reduced postoperative pain, shorter hospital stay, faster recovery time, and reduced learning curve for surgical trainees. MIS comprises surgical approaches, including laparoscopic surgery, endoscopic surgery, and robotic-assisted surgery. Despite the advantages that MIS provides to patients and surgeons, it remains limited by the lost sense of touch due to the indirect contact with tissues under operation, especially in robotic-assisted surgery. Surgeons, without haptic feedback, could unintentionally apply excessive forces that may cause tissue damage. Therefore, incorporating tactile sensation into MIS tools has become an interesting research topic. Designing, fabricating, and integrating force sensors onto different locations on the surgical tools are currently under development by several companies and research groups. In this context, electrical force sensing modality, including piezoelectric, resistive, and capacitive sensors, is the most conventionally considered approach to measure the grasping force, manipulation force, torque, and tissue compliance. For instance, piezoelectric sensors exhibit high sensitivity and accuracy, but the drawbacks of thermal sensitivity and the inability to detect static loads constrain their adoption in MIS tools. Optical-based tactile sensing is another conventional approach that facilitates electrically passive force sensing compatible with magnetic resonance imaging. Estimations of applied loadings are calculated from the induced changes in the intensity, wavelength, or phase of light transmitted through optical fibers. Nonetheless, new emerging technologies are also evoking a high potential of contributions to the field of smart surgical tools. The recent development of flexible, highly sensitive tactile microfluidic-based sensors has become an emerging field in tactile sensing, which contributed to wearable electronics and smart-skin applications. Another emerging technology is imaging-based tactile sensing that achieved superior multi-axial force measurements by implementing image sensors with high pixel densities and frame rates to track visual changes on a sensing surface. This article aims to review the literature on MIS tactile sensing technologies in terms of working principles, design requirements, and specifications. Moreover, this work highlights and discusses the promising potential of a few emerging technologies towards establishing low-cost, high-performance MIS force sensing.

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“…With regard to monitoring of the concentrations of environmental pollutants, oxide-based sensors are well known for their improved sensing performance as they offer an excellent surface to volume ratio, easy doping, are stable to a wide range of operating temperatures, and extend a highly regulated dimension. A highly selective ZnO-Nanoribbon device [ 68 ] with two probes and zigzag edges is designed that shows enormous sensitivity to predominant H 2 , O 2 , and CO 2 molecules. It shows highly promising adsorption and transport properties in accordance with density functional theory and Green’s function (NEGF) formalism.…”

Section: Transformational Applications Of Nanomaterials For Sensing P...mentioning

confidence: 99%

Sensing beyond Senses: An Overview of Outstanding Strides in Architecting Nanopolymer-Enabled Sensors for Biomedical Applications

Malini¹,

Roy

Raj³

et al. 2022

Polymers

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Nano-enabled sensing is an expanding interdisciplinary field of emerging science with dynamic multifunctional detecting capabilities, equipped with a wide range of multi-faceted nanomaterial having diverse dimensions and composition. They have proven to be highly robust, sensitive, and useful diagnostic tools ranging from advanced industrial processes to ordinary consumer products. As no single nanomaterial has proved to be unparalleled, recent years has witnessed a large number of nanomaterial-based sensing strategies for rapid detection and quantification of processes and substances with a high degree of reliability. Nano-furnished platforms, because of easy fabrication methods and chemical versatility, can serve as ideal sensing means through different transduction mechanisms. This article, through a unified experimental-theoretical approach, uses literature of recent years to introduce, evaluate, and analyze significant developments in the area of nanotechnology-aided sensors incorporating the various classes of nanomaterial. Addressing the broad interests, the work also summarizes the sensing mechanisms using schematic illustrations, attempts to integrate the performance of different categories of nanomaterials in the design of sensors, knowledge gaps, regulatory aspects, future research directions, and challenges of implementing such techniques in standalone devices. In view of a dependency of analysis and testing on sustained growth of sensor-supported platforms, this article inspires the scientific community for more attention in this field.

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High selectivity of N-doped ZnO nano-ribbons in detecting H2, O2 and CO2 molecules: Effect of negative-differential resistance on gas-sensing

Cited by 48 publications

References 53 publications

First-Principles Insight into Pd-Doped ZnO Monolayers as a Promising Scavenger for Dissolved Gas Analysis in Transformer Oil

First-Principles Insight into Pd-Doped ZnO Monolayers as a Promising Scavenger for Dissolved Gas Analysis in Transformer Oil

Tactile Sensing for Minimally Invasive Surgery: Conventional Methods and Potential Emerging Tactile Technologies

Sensing beyond Senses: An Overview of Outstanding Strides in Architecting Nanopolymer-Enabled Sensors for Biomedical Applications

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