Enhanced sensitivity of a GHz surface acoustic wave humidity sensor based on Ni(SO4)0.3(OH)1.4 nanobelts and NiO nanoparticles

Liu, Yuan; Huang, Hui; Wang, Lingling; Liu, Bin; Cai, Daoping; Wang, Dandan; Wang, Chenxia; Li, Han; Wang, Yanrong; Xie, Weixin; Li, Qiuhong; Wang, Taihong

doi:10.1039/c5tc02138c

Cited by 22 publications

(7 citation statements)

References 51 publications

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“…In recent years, the improved sensitivity based on large surface area escalated the development of nanostructured coatings as the humidity sensing material for SAW sensors. Till now, a variety of nanostructures has been synthesized, including nanofibers [ 41 , 66 , 67 ], nanorods [ 62 , 63 ], nanobelt [ 68 ], nanoclusters [ 69 ], nanowires [ 70 ], nanoparticles [ 42 , 68 ], oxide and composites nanomaterials [ 71 , 72 , 73 , 74 ]. Lin et al [ 66 ] presented a highly sensitive and ultrafast response sensor coated with Electrospun PANI/PVB composite nanofibers.…”

Section: Sensing Materialsmentioning

confidence: 99%

Surface Acoustic Wave Humidity Sensor: A Review

et al. 2023

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The Growing demands for humidity detection in commercial and industrial applications led to the rapid development of humidity sensors based on different techniques. Surface acoustic wave (SAW) technology is one of these methods that has been found to provide a powerful platform for humidity sensing owing to its intrinsic features, including small size, high sensitivity, and simple operational mechanism. Similar to other techniques, the principle of humidity sensing in SAW devices is also realized by an overlaid sensitive film, which serves as the core element whose interaction with water molecules is responsible for overall performance. Therefore, most researchers are focused on exploring different sensing materials to achieve optimum performance characteristics. This article reviews sensing materials used to develop SAW humidity sensors and their responses based on theoretical aspects and experimental outcomes. Herein the influence of overlaid sensing film on the performance parameters of the SAW device, such as quality factor, signal amplitude, insertion loss, etc., is also highlighted. Lastly, a recommendation to minimize the significant change in device characteristics is presented, which we believe will be a good step for the future development of SAW humidity sensors.

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Section: Sensing Materialsmentioning

confidence: 99%

Surface Acoustic Wave Humidity Sensor: A Review

et al. 2023

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“…Moreover, the designed sensor showed fast response/recovery kinetics, suitable repeatability of sensor signals and good stability of coating material even after one month. In a parallel report [173], the authors tested Ni(SO 4 ) 0.3 (OH) 1.4 i.e., (NSOH) nanobelts and NiO nanoparticles coated with 1.54 GHz SAW devices for relative humidity measurements, respectively. They compared relative humidity sensing data of developed sensors with other strategies reported in the literature, as shown in Table 3.…”

Section: Exemplary Sensor Applicationsmentioning

confidence: 99%

An Overview of High Frequency Acoustic Sensors—QCMs, SAWs and FBARs—Chemical and Biochemical Applications

Mujahid

Afzal

Dickert

2019

Sensors

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Acoustic devices have found wide applications in chemical and biosensing fields owing to their high sensitivity, ruggedness, miniaturized design and integration ability with on-field electronic systems. One of the potential advantages of using these devices are their label-free detection mechanism since mass is the fundamental property of any target analyte which is monitored by these devices. Herein, we provide a concise overview of high frequency acoustic transducers such as quartz crystal microbalance (QCM), surface acoustic wave (SAW) and film bulk acoustic resonators (FBARs) to compare their working principles, resonance frequencies, selection of piezoelectric materials for their fabrication, temperature-frequency dependency and operation in the liquid phase. The selected sensor applications of these high frequency acoustic transducers are discussed primarily focusing on the two main sensing domains, i.e., biosensing for working in liquids and gas/vapor phase sensing. Furthermore, the sensor performance of high frequency acoustic transducers in selected cases is compared with well-established analytical tools such as liquid chromatography mass spectrometry (LC-MS), gas chromatographic (GC) analysis and enzyme-linked immunosorbent assay (ELISA) methods. Finally, a general comparison of these acoustic devices is conducted to discuss their strengths, limitations, and commercial adaptability thus, to select the most suitable transducer for a particular chemical/biochemical sensing domain.

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“…Previously, the 1D α-Ni(OH) 2 structure has been reported to be widely applied to supercapacitor 29−31 and sensor. 32,33 However, the OER catalytic performance is rarely achieved. Besides, the incorporation of other transition metal elements has been confirmed to be a promising approach to enhance the OER performance of Ni-based metal oxide/hydroxides.…”

Section: Introductionmentioning

confidence: 99%

Insight into Fe Activating One-Dimensional α-Ni(OH)₂ Nanobelts for Efficient Oxygen Evolution Reaction

Shen

Liu

et al. 2021

J. Phys. Chem. C

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Development of high-efficiency and inexpensive oxygen evolution reaction (OER) catalysts is highly desirable for water electrolysis devices and rechargeable metal–air batteries. Herein, we report novel one-dimensional (1D) Fe-doped α-Ni(OH)2 nanobelts as OER-active electrocatalysts. In-depth characterizations revealed that Fe atoms are incorporated into the lattice of Ni(OH)2, resulting in the strong electron interaction with active Ni sites. Moreover, a contraction of Ni–O bond distance induced by Fe is revealed by operando X-ray absorption fine structure spectroscopy under OER working condition, which leads to a near-optimized adsorption of oxygen intermediates. Consequently, the Fe-doped α-Ni(OH)2 nanobelts deliver significantly promoted OER activity in alkaline solutions with a low OER overpotential of 236 mV at 10 mA cm–2 along with good stability. This work provides a strategy for developing efficiently non-noble metal catalysts, gives insights to the Fe doping effect and the dynamic evolution of disturbed atomic and electronic structure of Ni active sites.

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Enhanced sensitivity of a GHz surface acoustic wave humidity sensor based on Ni(SO₄)_0.3(OH)_1.4 nanobelts and NiO nanoparticles

Cited by 22 publications

References 51 publications

Surface Acoustic Wave Humidity Sensor: A Review

Surface Acoustic Wave Humidity Sensor: A Review

An Overview of High Frequency Acoustic Sensors—QCMs, SAWs and FBARs—Chemical and Biochemical Applications

Insight into Fe Activating One-Dimensional α-Ni(OH)₂ Nanobelts for Efficient Oxygen Evolution Reaction

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Enhanced sensitivity of a GHz surface acoustic wave humidity sensor based on Ni(SO4)0.3(OH)1.4 nanobelts and NiO nanoparticles

Cited by 22 publications

References 51 publications

Surface Acoustic Wave Humidity Sensor: A Review

Surface Acoustic Wave Humidity Sensor: A Review

An Overview of High Frequency Acoustic Sensors—QCMs, SAWs and FBARs—Chemical and Biochemical Applications

Insight into Fe Activating One-Dimensional α-Ni(OH)2 Nanobelts for Efficient Oxygen Evolution Reaction

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Enhanced sensitivity of a GHz surface acoustic wave humidity sensor based on Ni(SO₄)_0.3(OH)_1.4 nanobelts and NiO nanoparticles

Insight into Fe Activating One-Dimensional α-Ni(OH)₂ Nanobelts for Efficient Oxygen Evolution Reaction