Flexible laser-induced-graphene omnidirectional sound device

Zhang, Peng; Tang, Xingfu; Pang, Yu; Bi, Maoqiang; Li, Xiandong; Yu, Jiabing; Zhang, Jingping; Yuan, Min; Luo, Feng

doi:10.1016/j.cplett.2020.137275

Cited by 17 publications

(14 citation statements)

References 21 publications

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“…8d), resulted in an omnidirectional sound field with no noticeable degradation after 60 min. of operation (Fig.8e) [96].…”

Section: B Thermal Transducersmentioning

confidence: 99%

“…Whether the sound device can have an omnidirectional sound field when it is curved by an external force was not studied. The directivity of the planar artificial throat [108] was recently improved by Zhang et al, who developed an omnidirectional sound device based on mechanically deformed LIG [96]. Its thermoacoustic performance was tested by applying 5V, generating Joule heat on the surface.…”

Section: B Thermal Transducersmentioning

confidence: 99%

“…c) Response of the LIG throat to coughs, hums, screams, swallowing, and nods of a human [108]. d) LIG attached to an ultrathin cylinder structure (radius of 1.5 mm) [96] and e) the corresponding sound field [96].…”

Section: Magnetic-field Transducersmentioning

confidence: 99%

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Physical Sensors Based on Laser-Induced Graphene: A Review

Kaidarova

Kosel

2021

IEEE Sensors J.

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Physical sensors form the fundamental building blocks of a multitude of advanced applications that detect and monitor the surroundings and communicate the acquired physical data. The everlasting need for more compliant, low-cost, and energy-efficient sensor solutions has led to considerable interest in enhancing their features and operation limits even further. While graphene has emerged as a promising candidate material, due to its outstanding electrical and mechanical properties, it is still not available in large volumes for practical applications. Meanwhile, Laser-Induced Graphene has opened new perspectives for a versatile, durable, printed physical sensing platform capable of detecting various physical parameters across a range of conditions and subjects. In this review, LIG physical sensors were categorized into four broad types based on their transduction mechanism: mechanical, thermal, magnetic, and electromagnetic. We summaries various design strategies established for preparing reliable physical sensors without the involvement of chemical treatments, synthesis, and multi-step fabrication processes. The review considers the effects of laser choice, lasing environment, and parameters on graphene properties. We also discuss a broad spectrum of applications of LIG physical sensors in fields ranging from healthcare, tactile sensing, environmental monitoring, energy harvesting, and soft robotics to desalination and THz modulation.

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“…8d), resulted in an omnidirectional sound field with no noticeable degradation after 60 min. of operation (Fig.8e) [96].…”

Section: B Thermal Transducersmentioning

confidence: 99%

Section: B Thermal Transducersmentioning

confidence: 99%

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Physical Sensors Based on Laser-Induced Graphene: A Review

Kaidarova

Kosel

2021

IEEE Sensors J.

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“…The high thermal conductivity and low heat capacity of LIG made it very suitable as a material for thermoacoustic devices. 270 Meanwhile, the porous structure was suitable for detecting sound due to a sensitive response to weak vibrations. An alternating voltage periodically heated a LIG device and caused the air to expand, resulting in sound waves.…”

Section: Lig-based Sensorsmentioning

confidence: 99%

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

2021

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Laser-induced graphene (LIG) is produced rapidly by directly irradiating carbonaceous precursors, and it naturally exhibits as a three-dimensional porous structure. Due to advantages such as simple preparation, time-saving, environmental friendliness, low cost, and expanding categories of raw materials, LIG and its derivatives have achieved broad applications in sensors. This has been witnessed in various fields such as wearable devices, disease diagnosis, intelligent robots, and pollution detection. However, despite LIG sensors having demonstrated an excellent capability to monitor physical and chemical parameters, the systematic review of synthesis, sensing mechanisms, and applications of them combined with comparison against other preparation approaches of graphene is still lacking. Here, graphene-based sensors for physical, biological, and chemical detection are reviewed first, followed by the introduction of general preparation methods for the laser-induced method to yield graphene. The preparation and advantages of LIG, sensing mechanisms, and the properties of different types of emerging LIG-based sensors are comprehensively reviewed. Finally, possible solutions to the problems and challenges of preparing LIG and LIG-based sensors are proposed. This review may serve as a detailed reference to guide the development of LIG-based sensors that possess properties for future smart sensors in health care, environmental protection, and industrial production.

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“…Another method that recent research has developed is the production of graphene by direct laser treatments on different materials that contain carbon in its composition, such as nickel coated with solid carbon [17], polyimide [18] [19], polydimethylsiloxane (PDMS) [20], as thermal reduction of Graphene oxide (OG) to reduced graphene oxide (rOG) [21], among others. Direct growth and graphene design with a defined pattern have the advantage of direct and rapid production of graphene on the surface of different polymers or other carbonaceous materials [22].…”

Section: Introductionmentioning

confidence: 99%

Graphene Trails on PECVD Hydrogenated Amorphous Silicon Carbide Films SiC-a: H by Laser Writing at Room Temperature

Feria

Carreño

Rangel³

et al. 2020

JICS

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The production of high quality graphene without the need for catalyst metals as in the case of chemical vapor deposition (CVD) techniques remain a challenge. Silicon carbide is one of the materials with potential to form graphene films on its surface through thermal decomposition when subjected to high temperatures and ultrahigh vacuum. This technique is highly desirable since it enables the elimination of corrosion and transfer steps, which can leave residues in the graphene structure and alter its quality, as well as its electrical proprieties, however it is a costly and time consuming method. In this work, we present the production of graphene trails by direct laser radiation writing at room temperature and atmospheric pressure on hydrogenated amorphous silicon carbide films (SiC-a:H) produced by Plasma Enhanced Chemical Vapor Deposition (PECVD). Graphene trails of approximately 1cm x 4μm were obtained with patterns designed by computer Aided Design (CAD) software. Variations were made in both scanning speed and laser focal length, identifying a great dependence on the graphene quality with these two parameters. The best results of the Raman Spectroscopy Mappings showed high quality graphene with distance between point defects (LD) of 20nm, crystallite size (La) of 25nm and few layers (2-3). In addition, the electrical measurements from Au/Ti (20nm/100nm) electrodes deposited by electron beam evaporation showed high conductivity, with sheet resistances (Rs) from 0.7kΩ to 1.3 kΩ per square. This technique opens a great possibility of manufacturing devices for applications in electronics, being a fast, efficient and low cost method.

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Flexible laser-induced-graphene omnidirectional sound device

Cited by 17 publications

References 21 publications

Physical Sensors Based on Laser-Induced Graphene: A Review

Physical Sensors Based on Laser-Induced Graphene: A Review

Physical and Chemical Sensors on the Basis of Laser-Induced Graphene: Mechanisms, Applications, and Perspectives

Graphene Trails on PECVD Hydrogenated Amorphous Silicon Carbide Films SiC-a: H by Laser Writing at Room Temperature

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