Intrinsically Stretchable Resistive Switching Memory Enabled by Combining a Liquid Metal–Based Soft Electrode and a Metal–Organic Framework Insulator

Yi, Xiaohui; Yu, Zhe; Niu, Xiaodi; Shang, Jie; Mao, Guoyong; Yin, Tenghao; Yang, Huali; Xue, Wei; Dhanapal, Pravarthana; Qu, Shaoxing; Liu, Gang; Li, Run-Wei

doi:10.1002/aelm.201800655

Cited by 58 publications

(60 citation statements)

References 48 publications

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“…[4] Researchers have leveraged the high conductivity (3 × 10 4 S cm −1 ) and fluidity of LMs to synthesize composites [5] with high thermal conductivity, [6][7][8] high electrical conductivity, [9][10][11][12][13] enhanced/tunable mechanical properties, [14,15] electrical/mechanical self-healing capabilities, [16,17] and stimuli responsivity. [18][19][20][21][22] Like other natural and synthetic composites, proliferation of multifunctional materials for emerging technologies. Such an approach becomes increasingly relevant as polymer chemists discover new synthetic routes to tune polymer networks.…”

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confidence: 99%

Controlled Assembly of Liquid Metal Inclusions as a General Approach for Multifunctional Composites

et al. 2020

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functionality of LM composites relies on assembly and interactions between the matrix and filler. [11,23,24] To date, most of these LM composites have utilized silicone rubbers, where the functionality imparted by the matrix is limited to mechanical compliance and deformability, although a few meaningful exceptions exist (e.g., where the LM catalyzes/initiates poly mer ization). [19,21,25,26] Synthetic polymers can be designed with properties like stimuli responsivity, self-healing, processability, shape-morphing, and dynamic compliance and could be combined with LM to permit novel functionalities and processing capabilities. [27] The combination of finely tuned polymer synthesis with LM composite engineering will enable advanced applications like soft prosthetics, self-healing artificial skins, and 3D electronic materials. To achieve electrical conductivity, LM droplets within a composite must coalesce, for example, through an applied pressure (termed "mechanical sintering"). [28] Notably, the curing conditions and precursor composition dictate the network topology and resulting mechanical properties of the silicone matrix, which appear to influence whether an applied pressure forms percolation pathways for a LM composite. For example, LM composites using a commercially available silicone formulation (Sylgard 184, 10:1 weight ratio of Part A and Part B) can be electrically conductive after application of localized pressure [28] that coalesces LM droplets. However, permanent electrical conductivity has not been observed in LM composites that use a different commercially available silicone formulation (Ecoflex 00-30, 1:1 weight ratio of Part A and Part B), which is softer and more deformable than Sylgard 184. [8,20,29] This difference poses a limitation in generality of functionality for LM composites. Progress in LM composite engineering depends on a framework for materials synthesis that overcomes this limitation and enables integration of electrically conductive networks of LM in a wider range of media. Importantly, progress toward multifunctionality should include a focus on the properties of the matrix material. For LM composites, our group and others have demonstrated LM incorporation in functional matrix materials like hydrogels and shape-morphing polymers, but the predominate choice of matrix material has been silicone rubbers. [19,21,25,26] The development of an approach to achieve electrical conductivity by incorporating LM in functional polymer networks will facilitate Soft composites that use droplets of gallium-based liquid metal (LM) as the dispersion phase have the potential for transformative impact in multifunctional material engineering. However, it is unclear whether percolation pathways of LM can support high electrical conductivity in a wide range of matrix materials. This issue is addressed through an approach to LM composite synthesis that focuses on the interrelated effects of matrix curing/solidification and droplet formation. The combined influence of LM concentration, particle size, and ...

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confidence: 99%

Controlled Assembly of Liquid Metal Inclusions as a General Approach for Multifunctional Composites

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“…In recent years, researchers have successfully achieved the effective ways for improving the conductive ability of MOF materials by adsorbing small molecules and ions, which take full advantages of the unique periodic and porous structure of MOFs. These progresses also bring the new application of MOFs into the field of resistive memories 29,30,192‐195 …”

Section: Organic‐inorganic Hybrid Materials For Resistive Memorymentioning

confidence: 99%

“…To date, a variety of functional materials have been discovered for resistive switching memory applications, 12,15 including organic materials, 17‐23 inorganic compounds, 24‐27 and organic‐inorganic hybrid materials, 28‐32 in either single‐component or multiple‐component form. Among these, organic‐based and organic‐inorganic hybrid materials have aroused particular interests due to their fascinating properties 21,30,33‐37 .…”

Section: Introductionmentioning

confidence: 99%

Recent advances in organic‐based materials for resistive memory applications

Qian

Zhu

et al. 2020

InfoMat

158

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With the rapid development of data‐driven human interaction, advanced data‐storage technologies with lower power consumption, larger storage capacity, faster switching speed, and higher integration density have become the goals of future memory electronics. Nevertheless, the physical limitations of conventional Si‐based binary storage systems lag far behind the ultrahigh‐density requirements of post‐Moore information storage. In this regard, the pursuit of alternatives and/or supplements to the existing storage technology has come to the forefront. Recently, organic‐based resistive memory materials have emerged as promising candidates for next‐generation information storage applications, which provide new possibilities of realizing high‐performance organic electronics. Herein, the memory device structure, switching types, mechanisms, and recent advances in organic resistive memory materials are reviewed. In particular, their potential of fulfilling multilevel storage is summarized. Besides, the present challenges and future prospects confronted by organic resistive memory materials and devices are discussed.

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“…[ 20 ] Meanwhile, the clear mismatch in terms of elastic modulus between the rigid functional layers and the elastic substrate makes the integrated structure mechanically unstable (such as exfoliation and crack generation) during dynamic stretching, leading readily to device failure. [ 21,22 ]…”

Section: Introductionmentioning

confidence: 99%

Stretchable and Twistable Resistive Switching Memory with Information Storage and Computing Functionalities

Lü

Gao

et al. 2020

Adv Materials Technologies

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High‐performance stretchable and twistable nonvolatile memory devices with logic‐in‐memory functionality are highly desired for the development of future wearable electronics such as smart clothing. However, it is challenging to fabricate these memory devices using rigid functional materials based on conventional film deposition and patterning techniques. Herein, the first intrinsically stretchable and twistable resistive switching memory is reported using spin‐coated poly(dimethyl siloxane) elastomer as the storage medium and printed liquid metal as the electrodes. The memory device is found to exhibit a reliable resistive switching behavior under up to 30% stretching strain and 90° torsional deformation, possessing a large memory window (≈102) and an excellent retention (>104 s). Under 30% strain, stretching–release endurance of >500 cycles as well as excellent data integrity during the dynamic stretching–release process is demonstrated. Beyond data storage, logic‐in‐memory computation prototype represented by a one‐bit full adder is successfully implemented within four operation steps based on three stretched memory cells. This work will be highly valuable in materials and structure design towards the development of high‐performance and multifunctional wearable electronic modules and systems.

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Intrinsically Stretchable Resistive Switching Memory Enabled by Combining a Liquid Metal–Based Soft Electrode and a Metal–Organic Framework Insulator

Cited by 58 publications

References 48 publications

Controlled Assembly of Liquid Metal Inclusions as a General Approach for Multifunctional Composites

Controlled Assembly of Liquid Metal Inclusions as a General Approach for Multifunctional Composites

Recent advances in organic‐based materials for resistive memory applications

Stretchable and Twistable Resistive Switching Memory with Information Storage and Computing Functionalities

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