A bio-inspired 3D micro-structure for graphene-based bacteria sensing

Li, Bing; Tan, Haijie; Anastasova, Salzitsa; Power, Maura; Seichepine, Florent; Yang, Guang‐Zhong

doi:10.1016/j.bios.2018.09.087

Cited by 47 publications

(26 citation statements)

References 35 publications

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“…[349] While the sensor is about three times more sensitive (i.e., 0.17 kPa −1 ) than other crosslinked hydrogels, it is not as sensitive as sensors with microstructures. [350] A summary of the above-mentioned designs, along with additional metrics, can be found in Table 3.…”

Section: Liquidmentioning

confidence: 99%

Materials, Actuators, and Sensors for Soft Bioinspired Robots

et al. 2020

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This review covers recent advancements in the field of bioinspired soft robotics, with a primary focus on the last 4 years (2017)(2018)(2019)(2020). The review serves as a toolbox for an interdisciplinary audience interested in the most recent bioinspired soft robotic technologies. In particular, it highlights and explores the vital components of soft robots, focusing on the enabling mechanisms and their biological inspirations. The first section discusses the materials used to fabricate soft bio inspired robots. Soft bioinspired actuation and sensing are then discussed, exploring their capabilities and implementation by researchers. Existing challenges and future potentials of bioinspired soft robots are addressed in the concluding remarks. This review provides engineers and scientists with the latest technological advancements and information needed for designing and developing the next generation of soft bioinspired robotic systems. The future applications of these robots will be grand and limitless. Materials Used for Bioinspired Sensors and ActuatorsClassical robotic systems are comprised of rigid bodies, actuators, and sensors. Unfortunately, many of these well-developed actuators and sensors are not transferable to soft bodies. Thus, researchers working in soft robotics need to reinvent actuators and sensors for soft moving bodies. Biological organisms can be an excellent inspiration for designing these soft actuators and sensors, allowing for their integration in both soft and rigid bodies. The design process of soft actuators and sensors have to be initiated with material selection and composition, for they are foundations upon which the actuators and sensors will be built around. Presently, a diversified list of materials has been used in the development of soft robotic systems. This section will cover some of the latest advancements in the last 4 years in the area of material selection and composition for the design and development of soft bioinspired actuators and sensors.During the past 4 years, researchers have produced soft bioinspired actuators and sensors using biological material such as muscle tissue, [23,24] and plant fibers; [25] carbon-based materials such as graphite and graphene oxide (GO) [26][27][28][29][30][31] and carbon nanotubes (CN); [32,33] hydrogel materials such as poly(Nisopropylacrylamide) (PNIPAM), [34,35] liquid crystal elastomers (LCE), [36] dielectric elastomers (DE), [37] and ionic polymermetal composites (IPMC). [38] An overview of these materials (Figure 1), along with their underlying mechanisms, are discussed below.Biological systems can perform complex tasks with high compliance levels. This makes them a great source of inspiration for soft robotics. Indeed, the union of these fields has brought about bioinspired soft robotics, with hundreds of publications on novel research each year. This review aims to survey fundamental advances in bioinspired soft actuators and sensors with a focus on the progress between 2017 and 2020, providing a primer for the materials used i...

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Section: Liquidmentioning

confidence: 99%

Materials, Actuators, and Sensors for Soft Bioinspired Robots

et al. 2020

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“…Skin structures are often one of the key inspirations in bio-inspired materials. Graphene manufactured with the chemical vapour deposition process displayed high compression strength [29]. The combination of cobalt naphthenate, ethyl ketone peroxide, and unsaturated polyester resins (UPR) were used to make fire retardant materials [30].…”

Section: Nacre and Othermentioning

confidence: 99%

State of the Art Review about Bio-Inspired Design and Applications: An Aerospace Perspective

et al. 2021

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The field of bio-inspired design has tremendously transitioned into newer automated methods, yet there are methods being discovered which can elucidate underlying principles in design, materials, and manufacturing. Bio-inspired design aims to translate knowledge from the natural world to the current trends in industry. The recent growth in additive manufacturing (AM)methods has fueled the tremendous growth of bio-inspired products. It has enabled the production of intricate and complicated features notably used in the aerospace industry. Numerous methodologies were adopted to analyse the process of bio-inspired material selection, manufacturing methods, design, and applications. In the current review, different approaches are implemented to utilize bio-inspired designs that have revolutionized the aerospace industry, focusing on AM methods.

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“…The transversal and the longitudinal trapping efficiency of the spherical end-effector are shown in Figures S7 and S8, Supporting Information, respectively. For a multi-spot system, the transversal and longitudinal synthesis trapping force are determined by Equation 7, while the torque can be estimated by Equation (8).…”

Section: Modeling and Analysismentioning

confidence: 99%

“…This means that p zi = q zi (i = 1, 2, …n) and p ri = q ri (i = 1, 2, …n). Therefore, F r = 0, F z = 0, and M t = 0 can be reached according to Equations (7) and (8). For the control strategy based on changing the characteristic distance, the geometric constraint of the microrobot can be used to estimate the control relationship between the overall out-of-plane pose and the characteristic distance.…”

Section: (6 Of 15)mentioning

confidence: 99%

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Distributed Force Control for Microrobot Manipulation via Planar Multi‐Spot Optical Tweezer

Zhang

Barbot

et al. 2020

Advanced Optical Materials

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manipulation of cells, [3,4] microrobots, trapped in the focal position of the laser beam can be utilized as end-effectors of the OT. [5] Therefore, developing optical micro-machines to enable dexterous indirect manipulation of OT can have a wide range of applications. For example, four streptavidin-functionalized polystyrene beads, controlled by a time-shared multiplexed OT, have been attached to a biotinylated red blood cell and served as micro-tools to analyze the underlying molecular mechanisms involved in cell flickering. [6] In life science, laser-driven spinning birefringent spheres have been used to generate microfluidic-induced shear force for control of the growth of individual axons (nerve fibers) precisely, paving the way for nerve repair and regeneration. [7] To enable more dexterous indirect optical trapping and optical manipulation, optical micro robotics with novel synthetic structures can be used to increase the flexibility of OT systems and facilitate the deployment of general robotic solutions for biomedical science. [8] With recent advances in two-photon polymerization and other emerging micro/nanofabrication techniques, steerable non-spherical particles can now be fabricated. [9] Therefore, optically driven microrobots with complex structures can be used for arbitrary translational and angular positioning in 3D space. For example, anisotropic shapes have been considered for the design of micro-particles to create a remotely driven micro-motor based on radiation pressure for micromechanical systems. [10] An indirect optical trapping method using light driven micro-rotors to create a new form of near-field hydrodynamic micro-manipulation has been proposed, [11] with which the 2D trapping of absorbing particles, the control of position and orientation of yeast cells, and the independent control over multiple objects simultaneously have been demonstrated. Apart from using OT to realize reconfigurable hydrodynamic manipulation via the control of optically driven micro-motors, optoelectronic tweezer has been developed to combine dielectrophoresis with OT, which is capable of exerting a stronger manipulation force for a given intensity of light for microrobot control. [12] A shaped particle based on a tapered cylinder fabricated by two-photon polymerization has been proposed for acting as a passive force clamp, [13] which facilitates the design of optically trapped objects with specific force profiles. However, the motions of the passive force clamp are mainly for planar translation. For micro-manipulation which demands Optical tweezers (OT) represent a versatile tool for micro-manipulation. To avoid damages to living cells caused by illuminating laser directly on them, microrobots controlled by OT can be used for manipulation of cells or living organisms in microscopic scale. Translation and planar rotation motion of microrobots can be realized by using a multi-spot planar OT. However, out-of-plane manipulation of microrobots is difficult to achieve with a planar OT. This paper presents a distribut...

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A bio-inspired 3D micro-structure for graphene-based bacteria sensing

Cited by 47 publications

References 35 publications

Materials, Actuators, and Sensors for Soft Bioinspired Robots

Materials, Actuators, and Sensors for Soft Bioinspired Robots

State of the Art Review about Bio-Inspired Design and Applications: An Aerospace Perspective

Distributed Force Control for Microrobot Manipulation via Planar Multi‐Spot Optical Tweezer

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