Compact organic liquid dielectric resonator antenna for air pressure sensing using soft material

Low, Jen-Hahn; Chee, Pei Song; Lim, Eng-Hock; Lee, Kim Yee

doi:10.1038/s41598-020-72021-7

Cited by 25 publications

(7 citation statements)

References 42 publications

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“…A data glove consists of numerous integrated sensors that enable various applications, such as human-machine interaction, virtual reality (VR) object manipulation, object recognition, gesture recognition, patient rehabilitation, virtual surgery, and entertainment [1][2][3][4]. The sensors are made of stretchable polymers, including Ecoflex [5,6] and polydimethylsiloxane (PDMS) [7,8], to ensure their compatibility with the data glove. For VR applications, the data glove enables the manipulation of the object in a virtual environment by detecting the degree of freedom (DOF) of the hand movement [9,10].…”

Section: Introductionmentioning

confidence: 99%

Data Glove with Integrated Polyethylene‐Carbon Composite‐Based Strain Sensor for Virtual Reality Applications

et al. 2023

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A data glove enables fine motion control in virtual reality (VR). This work presents a cost‐effective data glove made of a commercial nylon‐based glove with integrated polyethylene‐carbon composites (Velostat). The resistance of the Velostat varies when a finger is bent. This piezoresistive behavior was explored by designing the Velostat as the strain sensor. The strain sensor was characterized for its flexure sensing by connecting it to a data acquisition circuit. The circuit is designed to process the output of the joint angles and feed it to the computer. A linear resistance output was measured with a sensitivity/gauge factor of 1.45 % per degree with a response time of 0.0158 seconds when the strain sensor bends from 0° to 30°. To control the 3D virtual hand's movement, the data glove was coupled with two inertial measurement unit sensors at the forearm and upper arm to identify its coordinates. The fabricated data glove successfully performs a proof‐of‐concept by picking‐and‐placing multiple objects in a VR environment.

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Section: Introductionmentioning

confidence: 99%

Data Glove with Integrated Polyethylene‐Carbon Composite‐Based Strain Sensor for Virtual Reality Applications

et al. 2023

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“…The addition of the film can drastically reduce the cross-selectivity issues of the antenna sensor as the film has a higher affinity towards methanol compared to other VOCs. In the literature, antenna sensors for other different applications including chemical substances detection 19 , 20 , drug detection 21 , breath monitoring 22 , biomedical applications 15 , 16 , air pressure sensing 13 or deformation detection 14 , were also presented. Recently a flexible rectifying filtering antenna 17 was used for ethanol detection, which uses a resonator with a microfluidic channel.…”

Section: Introductionmentioning

confidence: 99%

Dual-functional communication and sensing antenna system

Alam

Cheffena

Rajo‐Iglesias

2022

Sci Rep

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In this article, a dual functional antenna system for communication and sensing applications is designed on a single substrate having a common input port. The main motivation behind the proposed design is to build an antenna system, which can work as an antenna sensor and also can communicate over a fixed band not related to the resonance frequency shifts of the antenna sensor. The dual functionality of the system has been achieved by designing a frequency selective multipath filter (FSMF). The FSMF has an input port and two output ports. Both the communicating and sensing antennas are integrated on the output ports of the FSMF. The FSMF ensures minimum effect of the antennas on each other’s performance. The performance of the antenna sensor is first shown by characterizing different standard substrates with $${\varepsilon} _r=2.2$$ ε r = 2.2 to 6.15 and then demonstrated for ice and water detection. The communicating antenna is used for Wi-Fi (2.45 GHz) applications. The simulated and measured results of the dual-functional antenna systems are in good agreement. The proposed design is fabricated on a PCB with $${\varepsilon} _r=3.5$$ ε r = 3.5 and $$\tan \delta =0.0027$$ tan δ = 0.0027 with an overall size of $$86.7\times 26\times 0.8\,\text {mm}^3$$ 86.7 × 26 × 0.8 mm 3 .

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“…Nonetheless, the current established sensor, which is usually fabricated on a rigid platform, is not suitable for the wavy surface of human skin, and it often causes low-quality signals and creates discomfort for the users. Recent advances in flexible technology can possibly alleviate this constraint by fabricating the sensor in a thin form factor [7][8][9] or using soft elastomer [10][11][12][13][14][15] as the constructive material to promote conformal contact between the sensor and the skin. For instance, a skin patch sensor is fabricated by integrating a strain gauge with a soft elastomer to provide a piezoresistive and capacitive output against laryngeal movement during swallowing [16].…”

Section: Introductionmentioning

confidence: 99%

Artificial Intelligence-Assisted Throat Sensor Using Ionic Polymer–Metal Composite (IPMC) Material

et al. 2021

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Throat sensing has received increasing demands in recent years, especially for oropharyngeal treatment applications. The conventional videofluoroscopy (VFS) approach is limited by either exposing the patient to radiation or incurring expensive costs on sophisticated equipment as well as well-trained speech-language pathologists. Here, we propose a smart and non-invasive throat sensor that can be fabricated using an ionic polymer–metal composite (IPMC) material. Through the cation’s movement inside the IPMC material, the sensor can detect muscle movement at the throat using a self-generated signal. We have further improved the output responses of the sensor by coating it with a corrosive-resistant gold material. A support vector machine algorithm is used to train the sensor in recognizing the pattern of the throat movements, with a high accuracy of 95%. Our proposed throat sensor has revealed its potential to be used as a promising solution for smart healthcare devices, which can benefit many practical applications such as human–machine interactions, sports training, and rehabilitation.

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Compact organic liquid dielectric resonator antenna for air pressure sensing using soft material

Cited by 25 publications

References 42 publications

Data Glove with Integrated Polyethylene‐Carbon Composite‐Based Strain Sensor for Virtual Reality Applications

Data Glove with Integrated Polyethylene‐Carbon Composite‐Based Strain Sensor for Virtual Reality Applications

Dual-functional communication and sensing antenna system

Artificial Intelligence-Assisted Throat Sensor Using Ionic Polymer–Metal Composite (IPMC) Material

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