Bioinspired Double‐Broadband Switchable Microwave Absorbing Grid Structures with Inflatable Kresling Origami Actuators

Zhang, Zhong; Lei, Hongshuai; Duan, Shengyu; Zhao, Zeang; Chen, Mingji; Wang, Changxian; Fang, Daining

doi:10.1002/advs.202306119

Cited by 10 publications

(1 citation statement)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The geometric design and mechanical property analyses of origami structures have received significant attention in practical applications. , In order to develop new-type reconfigurable devices based on the proposed accordion-origami MA, dynamic and static behavior analyses are indispensable. By analyzing the force–displacement relationship of origami structures in Figure c, homeostatic properties and induced nonlinear dynamical kinetic behavior can be clarified.…”

Section: Resultsmentioning

confidence: 99%

Reconfigurable Origami/Kirigami Metamaterial Absorbers Developed by Fast Inverse Design and Low-Concentration MXene Inks

Li,

Wang,

Peng

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Reconfigurable metamaterial absorbers (MAs), consisting of tunable elements or deformable structures, are able to transform their absorbing bandwidth and amplitude in response to environmental changes. Among the options for building reconfigurable MAs, origami/kirigami structures show great potential because of their ability to combine excellent mechanical and electromagnetic (EM) properties. However, neither the trialand-error-based design method nor the complex fabrication process can meet the requirement of developing high-performance MAs. Accordingly, this work introduces a deep-learning-based algorithm to realize the fast inverse design of origami MAs. Then, an accordion-origami coding MA is generated with reconfigurable EM responses that can be smoothly transformed between ultrabroadband absorption (5.5−20 GHz, folding angle α = 82°) and high reflection (2−20 GHz, RL > −1.5 dB, α = 0°) under y-polarized waves. However, the asymmetric coding pattern and accordion-origami deformation lead to typical polarization-sensitive absorbing performance (2−20 GHz, RL > −4 dB, α < 90°) under x-polarized waves. For the first time, a kirigami polarization rotation surface with switchable operation band is adapted to balance the absorbing performance of accordion-origami MA under orthogonal polarized waves. As a result, the stacked origami-kirigami MA maintains polarization-insensitive ultrabroadband absorption (4.4−20 GHz) at β = 0°and could be transformed into a narrowband absorber through deformation. Besides, the adapted origami/kirigami structures possess excellent mechanical properties such as low relative density, negative Poisson's ratio, and tunable specific energy absorption. Moreover, by modulating the PEDOT:PSS conductive bridges among MXene nanosheets, a series of low-concentration MXene-PEDOT:PSS inks (∼46 mg•mL −1 ) with adjustable square resistance (5−32.5 Ω/sq) are developed to fabricate the metamaterials via screen printing. Owing to the universal design scheme, this work supplies a promising paradigm for developing low-cost and high-performance reconfigurable EM absorbers.

show abstract

Section: Resultsmentioning

confidence: 99%

Reconfigurable Origami/Kirigami Metamaterial Absorbers Developed by Fast Inverse Design and Low-Concentration MXene Inks

Li,

Wang,

Peng

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

Multifunctional Metamaterial with Reconfigurable Electromagnetic Scattering Properties for Advanced Stealth and Adaptive Applications

Wang,

Li,

Liao

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

The rapid development of radar detection systems has led to an increased sensitivity to the electromagnetic (EM) scattering properties of detected targets. Flexible and adaptable EM scattering properties significantly enhance the survivability of battlefield weapons. This paper presents the design of a novel multifunctional metamaterial with reconfigurable EM scattering properties based on a bistable curved beam. In addition to the cushioning and energy absorption properties of curved beams, the metamaterial achieves more than 90% EM absorption in the frequency range of 2.17–17.31 GHz, with a relative thickness of only 0.09λL. The bistable nature of the metamaterial allows it to switch between different states. Moreover, combined with the digital coding, this metamaterial can continuously adjust the absorbing bandwidth and further enhance the EM absorption rate within a specific frequency band range. If applied to satellite configurations, the developed metamaterial significantly reduces the radar cross section and offers potential applications in reconfiguring EM scattering properties, when applied to satellite configurations. By actively controller and reconstructing the EM scattering properties at certain frequency points, the metamaterial can achieve camouflage, providing innovative solutions for future stealth technology, electronic countermeasures, and deception jamming in radar detection.

show abstract

3D Printed Multi‐Cavity Soft Actuator with Integrated Motion and Sensing Functionalities via Bio‐Inspired Interweaving Foldable Endomysium

Fang,

Tang,

et al. 2024

Advanced Science

View full text Add to dashboard Cite

The human muscle bundle generates versatile movements with synchronous neurosensory, enabling human to undertake complex tasks, which inspires researches into functional integration of motions and sensing in actuators for robots. Although soft actuators have developed diverse motion capabilities utilizing the inherent compliance, the simultaneous‐sensing approaches typically involve adding sensing components or embedding certain‐signal‐field substrates, resulting in structural complexity and discrepant deformations between the actuation parts with high‐dimensional motions and the sensing parts with heterogeneous stiffnesses. Inspired by the muscle‐bundle multifiber mechanism, a multicavity functional integration (McFI) approach is proposed for soft pneumatic actuators to simultaneously realize multidimensional motions and sensing by separating and coordinating active and passive cavities. A bio‐inspired interweaving foldable endomysium (BIFE) is introduced to construct and reinforce the multicavity chamber with optimized purposive foldability, enabling 3D printing single‐material fabrication. Performing elongation, contraction, and bidirectional bending, the McFI actuator senses its spatial position, orientation, and axial force, based on the kinematic and sensing models built on multi‐cavity pressures. Two McFI‐actuator‐driven robots are built: a soft crawling robot with path reconstruction and a narrow‐maneuverable soft gripper with object exteroception, validating the practicality in stand‐alone use of the actuator and the potential for intelligent soft robotic innovation of the McFI approach.

show abstract

Bioinspired Double‐Broadband Switchable Microwave Absorbing Grid Structures with Inflatable Kresling Origami Actuators

Cited by 10 publications

References 60 publications

Reconfigurable Origami/Kirigami Metamaterial Absorbers Developed by Fast Inverse Design and Low-Concentration MXene Inks

Reconfigurable Origami/Kirigami Metamaterial Absorbers Developed by Fast Inverse Design and Low-Concentration MXene Inks

Multifunctional Metamaterial with Reconfigurable Electromagnetic Scattering Properties for Advanced Stealth and Adaptive Applications

3D Printed Multi‐Cavity Soft Actuator with Integrated Motion and Sensing Functionalities via Bio‐Inspired Interweaving Foldable Endomysium

Contact Info

Product

Resources

About