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Roberts N, Raeisi Kheirabadi N, Tsompanas MA, Chiolerio A, Crepaldi M, Adamatzky A. Logical circuits in colloids. ROYAL SOCIETY OPEN SCIENCE 2024; 11:231939. [PMID: 39076794 PMCID: PMC11285612 DOI: 10.1098/rsos.231939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/01/2024] [Accepted: 03/13/2024] [Indexed: 07/31/2024]
Abstract
Colloid-based computing devices offer remarkable fault tolerance and adaptability to varying environmental conditions due to their amorphous structure. An intriguing observation is that a colloidal suspension of ZnO nanoparticles in dimethylsulfoxide (DMSO) exhibits reconfiguration when exposed to electrical stimulation and produces spikes of electrical potential in response. This study presents a novel laboratory prototype of a ZnO colloidal computer, showcasing its capability to implement various Boolean functions featuring two, four and eight inputs. During our experiments, we input binary strings into the colloid mixture, where a logical 'True' state is represented by an impulse of an electrical potential. In contrast, the absence of the electrical impulse denotes a logical 'False' state. The electrical responses of the colloid mixture are recorded, allowing us to extract truth tables from the recordings. Through this methodological approach, we demonstrate the successful implementation of a wide range of logical functions using colloidal mixtures. We provide detailed distributions of the logical functions discovered and offer speculation on the potential impacts of our findings on future and emerging unconventional computing technologies. This research highlights the exciting possibilities of colloid-based computing and paves the way for further advancements.
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Affiliation(s)
- Nic Roberts
- Unconventional Computing Laboratory, UWE, Bristol, UK
- Department of Engineering and Technology, University of Huddersfield, Huddersfield, UK
| | | | | | - Alessandro Chiolerio
- Unconventional Computing Laboratory, UWE, Bristol, UK
- Center for Bioinspired Soft Robotics, Istituto Italiano di Tecnologia, Genova, Italy
| | - Marco Crepaldi
- Electronic Design Laboratory, Istituto Italiano di Tecnologia, Genova, Italy
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2
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Mougkogiannis P, Adamatzky A. On interaction of proteinoids with simulated neural networks. Biosystems 2024; 237:105175. [PMID: 38460836 DOI: 10.1016/j.biosystems.2024.105175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/11/2024]
Abstract
Proteinoid-neuron networks combine biological neurons with spiking proteinoid microspheres, which are generated by thermal condensation of amino acids. Complex and dynamic spiking patterns in response to varied stimuli make these networks suitable for unconventional computing. This research examines the interaction of proteinoid-neuron networks with function-generator-artificial neural networks (ANN) that may create distinct electrical waveforms. Function-generator- artificial neural network (ANN) stimulates and modulates proteinoid-neuron network spiking activity and synchronisation to encode and decode information. We employ function-generator-ANN to study proteinoid-neuron network nonlinear dynamics and chaos and optimise their performance and energy efficiency. Function-generator-ANN improves proteinoid-neuron networks' computational capacities and robustness and creates unique hybrid systems with electrical devices. We address the benefits as well as the drawbacks of employing proteinoid-neuron networks for unconventional computing with function-generator-ANN.
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Kheirabadi NR, Chiolerio A, Szaciłowski K, Adamatzky A. Neuromorphic Liquids, Colloids, and Gels: A Review. Chemphyschem 2023; 24:e202200390. [PMID: 36002385 PMCID: PMC10092099 DOI: 10.1002/cphc.202200390] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/23/2022] [Indexed: 01/07/2023]
Abstract
Advances in flexible electronic devices and robotic software require that sensors and controllers be virtually devoid of traditional electronic components, be deformable and stretch-resistant. Liquid electronic devices that mimic biological synapses would make an ideal core component for flexible liquid circuits. This is due to their unbeatable features such as flexibility, reconfiguration, fault tolerance. To mimic synaptic functions in fluids we need to imitate dynamics and complexity similar to those that occurring in living systems. Mimicking ionic movements are considered as the simplest platform for implementation of neuromorphic in material computing systems. We overview a series of experimental laboratory prototypes where neuromorphic systems are implemented in liquids, colloids and gels.
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Affiliation(s)
| | - Alessandro Chiolerio
- Unconventional Computing Laboratory, UWE, Bristol, UK.,Center for Bioinspired Soft Robotics, Istituto Italiano di Tecnologia, Genova, Italy
| | - Konrad Szaciłowski
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, Krakow, Poland
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4
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de Paiva AB, Silva RSW, de Godoy MPF, Vargas LMB, Peres ML, Soares DAW, Lopez-Richard V. Temperature, detriment or advantage for memory emergence: the case of ZnO. J Chem Phys 2022; 157:014704. [DOI: 10.1063/5.0097470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Despite the widespread emergence of memory effects in solid systems, understanding basic microscopic mechanisms that trigger them is still puzzling. We report how ingredients of solid state transport in polycristalline systems, such as semiconductor oxides, become sufficient conditions for a memristive response that points to the natural emergence of memory, discernible under adequate set of driving inputs. The experimental confirmation of these trends will be presented along with a compact analytical theoretical picture that allows discerning the relative contribution of the main building blocks of memory and the effect of temperature, in particular. These findings can be extended to a vast universe of materials and devices, providing a unified physical explanation for a wide class of resistive memories, and pinpointing the optimal driving configurations for their operation.
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5
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Heng W, Solomon S, Gao W. Flexible Electronics and Devices as Human-Machine Interfaces for Medical Robotics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107902. [PMID: 34897836 PMCID: PMC9035141 DOI: 10.1002/adma.202107902] [Citation(s) in RCA: 117] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 12/08/2021] [Indexed: 05/02/2023]
Abstract
Medical robots are invaluable players in non-pharmaceutical treatment of disabilities. Particularly, using prosthetic and rehabilitation devices with human-machine interfaces can greatly improve the quality of life for impaired patients. In recent years, flexible electronic interfaces and soft robotics have attracted tremendous attention in this field due to their high biocompatibility, functionality, conformability, and low-cost. Flexible human-machine interfaces on soft robotics will make a promising alternative to conventional rigid devices, which can potentially revolutionize the paradigm and future direction of medical robotics in terms of rehabilitation feedback and user experience. In this review, the fundamental components of the materials, structures, and mechanisms in flexible human-machine interfaces are summarized by recent and renowned applications in five primary areas: physical and chemical sensing, physiological recording, information processing and communication, soft robotic actuation, and feedback stimulation. This review further concludes by discussing the outlook and current challenges of these technologies as a human-machine interface in medical robotics.
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Affiliation(s)
- Wenzheng Heng
- Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Samuel Solomon
- Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Wei Gao
- Andrew and Peggy Cherng Department of Medical Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
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6
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Yin X, Wang Y, Chang TH, Zhang P, Li J, Xue P, Long Y, Shohet JL, Voyles PM, Ma Z, Wang X. Memristive Behavior Enabled by Amorphous-Crystalline 2D Oxide Heterostructure. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2000801. [PMID: 32319153 DOI: 10.1002/adma.202000801] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/06/2020] [Accepted: 03/22/2020] [Indexed: 06/11/2023]
Abstract
The emergence of memristive behavior in amorphous-crystalline 2D oxide heterostructures, which are synthesized by atomic layer deposition (ALD) of a few-nanometer amorphous Al2 O3 layers onto atomically thin single-crystalline ZnO nanosheets, is demonstrated. The conduction mechanism is identified based on classic oxygen vacancy conductive channels. ZnO nanosheets provide a 2D host for oxygen vacancies, while the amorphous Al2 O3 facilitates the generation and stabilization of the oxygen vacancies. The conduction mechanism in the high-resistance state follows Poole-Frenkel emission, and in the the low-resistance state is fitted by the Mott-Gurney law. From the slope of the fitting curve, the mobility in the low-resistance state is estimated to be ≈2400 cm2 V-1 s-1 , which is the highest value reported in semiconductor oxides. When annealed at high temperature to eliminate oxygen vacancies, Al is doped into the ZnO nanosheet, and the memristive behavior disappears, further confirming the oxygen vacancies as being responsible for the memristive behavior. The 2D heterointerface offers opportunities for new design of high-performance memristor devices.
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Affiliation(s)
- Xin Yin
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Yizhan Wang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Tzu-Hsuan Chang
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Pei Zhang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Jun Li
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Panpan Xue
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Yin Long
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - J Leon Shohet
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Paul M Voyles
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Zhenqiang Ma
- Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Xudong Wang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
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7
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Mayne R, Draper TC, Phillips N, Whiting JGH, Weerasekera R, Fullarton C, de Lacy Costello BPJ, Adamatzky A. Neuromorphic Liquid Marbles with Aqueous Carbon Nanotube Cores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13182-13188. [PMID: 31525934 PMCID: PMC7007261 DOI: 10.1021/acs.langmuir.9b02552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/16/2019] [Indexed: 05/08/2023]
Abstract
Neuromorphic computing devices attempt to emulate features of biological nervous systems through mimicking the properties of synapses toward implementing the emergent properties of their counterparts, such as learning. Inspired by recent advances in the utilization of liquid marbles (LMs, microliter quantities of fluid coated in hydrophobic powder) for the creation of unconventional computing devices, we describe the development of LMs with neuromorphic properties through the use of copper coatings and 1.0 mg mL-1 carbon nanotube (CNT)-containing fluid cores. Experimentation was performed through sandwiching the LMs between two cup-style electrodes and stimulating them with repeated dc pulses at 3.0 V. Our results demonstrate that "entrainment" of CNT-filled copper LMs via periodic pulses can cause their electrical resistance to rapidly switch between high to low resistance profiles upon inverting the polarity of stimulation: the reduction in resistance between high and low profiles was approximately 88% after two rounds of entrainment. This effect was found to be reversible through reversion to the original stimulus polarity and was strengthened by repeated experimentation, as evidenced by a mean reduction in time to switching onset of 43%. These effects were not replicated in nanotube solutions not bound inside LMs. Our electrical characterization also reveals that nanotube-filled LMs exhibit pinched loop hysteresis IV profiles consistent with the description of memristors. We conclude by discussing the applications of this technology to the development of unconventional computing devices and the study of emergent characteristics in biological neural tissue.
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Affiliation(s)
- Richard Mayne
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - Thomas C. Draper
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - Neil Phillips
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - James G. H. Whiting
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - Roshan Weerasekera
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - Claire Fullarton
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - Ben P. J. de Lacy Costello
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
| | - Andrew Adamatzky
- Department
of Applied Sciences, Faculty of Health and Applied Sciences, Unconventional Computing
Group, Faculty of the Environment and Technology, Department of Engineering Design
and Mathematics, Faculty of the Environment and Technology, and Health Technology
Hub, University of the West of England, Frenchay Campus, Bristol BS16 1QY, U.K.
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8
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Resistive switching characteristics of ZnO nanoparticles layer-by-layer assembly based on cortisol and its antibody immune binding. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.06.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Wang D, Yan S, Chen Q, He Q, Xiao Y, Tang M, Zheng X. Direct Observation of Structural Deformation Immunity for Understanding Oxygen Plasma Treatment-Enhanced Resistive Switching in HfO x-Based Memristive Devices. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1355. [PMID: 31546659 PMCID: PMC6836033 DOI: 10.3390/nano9101355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 11/16/2022]
Abstract
Oxygen ions' migration is the fundamental resistive switching (RS) mechanism of the binary metal oxides-based memristive devices, and recent studies have found that the RS performance can be enhanced through appropriate oxygen plasma treatment (OPT). However, the lack of experimental evidence observed directly from the microscopic level of materials and applicable understanding of how OPT improves the RS properties will cause significant difficulties in its further application. In this work, we apply scanning probe microscope (SPM)-based techniques to study the OPT-enhanced RS performance in prototypical HfOx based memristive devices through in situ morphology and electrical measurements. It is first found that the structural deformations in HfOx nanofilm induced by migration of oxygen ions and interfacial electrochemical reactions can be recovered by OPT effectively. More importantly, such structural deformations no longer occur after OPT due to the strengthening in lattice structure, which directly illustrates the enhanced quantity of HfOx nanofilm and the nature of enhanced RS properties after OPT. Finally, the underlying mechanisms of OPT-enhanced RS performance are analyzed by the results of X-ray photoelectron spectroscopic (XPS) surface analysis. In the OPT-enhanced HfOx nanofilm, oxygen vacancies in crystalline regions can be remarkably reduced by active oxygen ions' implantation. The oxygen ions transport will depend considerably on the grain boundaries and OPT-enhanced lattice structure will further guarantee the stability of conductive filaments, both of which ensure the uniformity and repeatability in RS processes. This study could provide a scientific basis for improving RS performance of oxides-based memristive devices by utilizing OPT.
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Affiliation(s)
- Dong Wang
- School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Shaoan Yan
- School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China.
- Key Laboratory of Welding Robot and Application Technology of Hunan Province, School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China.
| | - Qilai Chen
- School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Qiming He
- Key Laboratory of Microelectronics Devices and Integration Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Yongguang Xiao
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Minghua Tang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Xuejun Zheng
- School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China.
- Key Laboratory of Welding Robot and Application Technology of Hunan Province, School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China.
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10
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Gao S, Yi X, Shang J, Liu G, Li RW. Organic and hybrid resistive switching materials and devices. Chem Soc Rev 2019; 48:1531-1565. [DOI: 10.1039/c8cs00614h] [Citation(s) in RCA: 211] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review presents a timely and comprehensive summary of organic and hybrid materials for nonvolatile resistive switching memory applications in the “More than Moore” era, with particular attention on their designing principles for electronic property tuning and flexible memory performance.
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Affiliation(s)
- Shuang Gao
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Xiaohui Yi
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Jie Shang
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Gang Liu
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
| | - Run-Wei Li
- CAS Key Laboratory of Magnetic Materials and Devices
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
- China
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11
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Porro S, Bejtka K, Jasmin A, Fontana M, Milano G, Chiolerio A, Pirri CF, Ricciardi C. A multi-level memristor based on atomic layer deposition of iron oxide. NANOTECHNOLOGY 2018; 29:495201. [PMID: 30234499 DOI: 10.1088/1361-6528/aae2ff] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This work reports the fabrication of memristive devices based on iron oxide (Fe2O3) thin films grown by atomic layer deposition (ALD) using ferrocene as iron precursor and ozone as oxidant. An excellent control of the ALD process was achieved by using an experimental procedure based on a sequence of micro-pulses, which provided long residence time and homogeneous diffusion of precursors, allowing ALD of thin films with smooth morphology and crystallinity which was found to increase with layer thickness, at temperatures as low as 250 °C. The resistive switching of symmetric Pt/Fe2O3/Pt thin film devices exhibited bipolar mode with good stability and endurance. Multi-level switching was achieved via current and voltage control. It was proved that the ON state regime can be tuned by changing the current compliance while the OFF state can be changed to intermediate levels by decreasing the maximum voltage during RESET. The structural analysis of the switched oxide layer revealed the presence of nano-sized crystalline domains corresponding to different iron oxide phases, suggesting that Joule heating effects during I-V cycling are responsible for a crystallization process of the pristine amorphous layer.
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Affiliation(s)
- Samuele Porro
- Politecnico di Torino, Applied Science and Technology Department, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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12
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Barnes BK, Das KS. Resistance Switching and Memristive Hysteresis in Visible-Light-Activated Adsorbed ZnO Thin Films. Sci Rep 2018; 8:2184. [PMID: 29391500 PMCID: PMC5794968 DOI: 10.1038/s41598-018-20598-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 01/22/2018] [Indexed: 11/30/2022] Open
Abstract
The discovery of resistance switching memristors marks a paradigm shift in the search for alternative non-volatile memory components in the semiconductor industry. Normally a dielectric in these bistable memory cells changes its resistance with an applied electric field or current, albeit retaining the resistive state based on the history of the applied field. Despite showing immense potential, sustainable growth of this new memory technology is bogged down by several factors including cost, intricacies of design, lack of efficient tunability, and issues with scalability and eco-friendliness. Here, we demonstrate a simple arrangement wherein an ethanol-adsorbed ZnO thin film exhibits orders of magnitude change in resistance when activated by visible light. We show that there exists two stable ohmic states, one in the dark and the other in the illuminated regime, as well as a significant delay in the transition between these saturated states. We also demonstrate that visible light acts as a non-invasive tuning parameter for the bistable resistive states. Furthermore, a pinched hysteresis I-V response observed in these devices indicate what seems to be a new type of memristive behaviour.
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Affiliation(s)
- Benjamin Kerr Barnes
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD, USA
| | - Kausik S Das
- Department of Natural Sciences, University of Maryland Eastern Shore, Princess Anne, MD, USA.
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13
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Chiolerio A, Quadrelli MB. Smart Fluid Systems: The Advent of Autonomous Liquid Robotics. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1700036. [PMID: 28725530 PMCID: PMC5515117 DOI: 10.1002/advs.201700036] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/23/2017] [Indexed: 05/23/2023]
Abstract
Organic, inorganic or hybrid devices in the liquid state, kept in a fixed volume by surface tension or by a confining membrane that protects them from a harsh environment, could be used as biologically inspired autonomous robotic systems with unique capabilities. They could change shape according to a specific exogenous command or by means of a fully integrated adaptive system, and provide an innovative solution for many future applications, such as space exploration in extreme or otherwise challenging environments, post-disaster search and rescue in ground applications, compliant wearable devices, and even in the medical field for in vivo applications. This perspective provides an initial assessment of existing capabilities that could be leveraged to pursue the topic of "Smart Fluid Systems" or "Liquid Engineered Systems".
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Affiliation(s)
- A. Chiolerio
- Center for Sustainable Future TechnologiesIstituto Italiano di TecnologiaCorso Trento 2110129TorinoItaly
| | - Marco B. Quadrelli
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCA91109‐8099U.S.A.
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14
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Asvarov AS, Akhmedov AK, Abduev AK, Muslimov AE, Chiolerio A. Effects of the mechanoactivation treatment on the structure of ZnO–Zn cermet mixture. CRYSTALLOGR REP+ 2017. [DOI: 10.1134/s1063774517010059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Chiolerio A, Chiappalone M, Ariano P, Bocchini S. Coupling Resistive Switching Devices with Neurons: State of the Art and Perspectives. Front Neurosci 2017; 11:70. [PMID: 28261048 PMCID: PMC5309244 DOI: 10.3389/fnins.2017.00070] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 01/31/2017] [Indexed: 11/13/2022] Open
Abstract
Here we provide the state-of-the-art of bioelectronic interfacing between biological neuronal systems and artificial components, focusing the attention on the potentiality offered by intrinsically neuromorphic synthetic devices based on Resistive Switching (RS). Neuromorphic engineering is outside the scopes of this Perspective. Instead, our focus is on those materials and devices featuring genuine physical effects that could be sought as non-linearity, plasticity, excitation, and extinction which could be directly and more naturally coupled with living biological systems. In view of important applications, such as prosthetics and future life augmentation, a cybernetic parallelism is traced, between biological and artificial systems. We will discuss how such intrinsic features could reduce the complexity of conditioning networks for a more natural direct connection between biological and synthetic worlds. Putting together living systems with RS devices could represent a feasible though innovative perspective for the future of bionics.
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Affiliation(s)
- Alessandro Chiolerio
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia Torino, Italy
| | - Michela Chiappalone
- Neuroscience and Brain Technologies Department, Istituto Italiano di Tecnologia Genova, Italy
| | - Paolo Ariano
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia Torino, Italy
| | - Sergio Bocchini
- Center for Sustainable Future Technologies, Istituto Italiano di Tecnologia Torino, Italy
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16
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Conti D, Lamberti A, Porro S, Rivolo P, Chiolerio A, Pirri CF, Ricciardi C. Memristive behaviour in poly-acrylic acid coated TiO 2 nanotube arrays. NANOTECHNOLOGY 2016; 27:485208. [PMID: 27819794 DOI: 10.1088/0957-4484/27/48/485208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work investigates titanium dioxide nanotube arrays (TiO2-NTA) grown by anodic oxidation as an active material for memristive applications. In particular, metal-insulator-metal structures made of vertically oriented amorphous TiO2-NTA grown on titanium foil were exploited in Ti/TiO2-NTA/Pt devices. The deposition of a polymeric thin film between NTA and top electrodes significantly improved the stability of the devices and increased by more than double the off/on resistance ratio. The resistive switching of TiO2-NTA samples crystallised by thermal annealing was also studied. Such devices displayed nonlinear I-V curves characterised by a smooth rectifying behaviour, without any evident resistive switching (RS). Also in this case, the interposition of the polymeric layer enhanced the RS behaviour of TiO2-NTA samples, remarkably increasing the devices' off/on ratio and endurance. The rise of high resistance states can be simply related to the addition of the polymer as resistance in series, while the variation of the low resistance states is here attributed to the occurrence of surface chemical reactions between polymer functional groups and the metal oxide, which increase the charge carriers available for conduction.
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Affiliation(s)
- Daniele Conti
- Politecnico di Torino, Applied Science and Technology Department, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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Wang X, Liu J. Recent Advancements in Liquid Metal Flexible Printed Electronics: Properties, Technologies, and Applications. MICROMACHINES 2016; 7:E206. [PMID: 30404387 PMCID: PMC6189762 DOI: 10.3390/mi7120206] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 11/17/2022]
Abstract
This article presents an overview on typical properties, technologies, and applications of liquid metal based flexible printed electronics. The core manufacturing material-room-temperature liquid metal, currently mainly represented by gallium and its alloys with the properties of excellent resistivity, enormous bendability, low adhesion, and large surface tension, was focused on in particular. In addition, a series of recently developed printing technologies spanning from personal electronic circuit printing (direct painting or writing, mechanical system printing, mask layer based printing, high-resolution nanoimprinting, etc.) to 3D room temperature liquid metal printing is comprehensively reviewed. Applications of these planar or three-dimensional printing technologies and the related liquid metal alloy inks in making flexible electronics, such as electronical components, health care sensors, and other functional devices were discussed. The significantly different adhesions of liquid metal inks on various substrates under different oxidation degrees, weakness of circuits, difficulty of fabricating high-accuracy devices, and low rate of good product-all of which are challenges faced by current liquid metal flexible printed electronics-are discussed. Prospects for liquid metal flexible printed electronics to develop ending user electronics and more extensive applications in the future are given.
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Affiliation(s)
- Xuelin Wang
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China.
| | - Jing Liu
- Department of Biomedical Engineering, School of Medicine, Tsinghua University, Beijing 100084, China.
- Beijing Key Lab of CryoBiomedical Engineering and Key Lab of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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