Materials Today Nano最新文献

{"title":"Ferroelectric behavior arising from polar topologies in epitaxially strained SrTiO3-δ ultrathin films","authors":"Tiago Rodrigues ,&nbsp;José P.B. Silva ,&nbsp;Fábio Figueiras ,&nbsp;M.R. Soares ,&nbsp;R. Vilarinho ,&nbsp;J. Agostinho Moreira ,&nbsp;Ihsan Çaha ,&nbsp;Francis Leonard Deepak ,&nbsp;Bernardo Almeida","doi":"10.1016/j.mtnano.2024.100486","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100486","url":null,"abstract":"<div><p>In this work, we show that epitaxially strained SrTiO_{3<strong>-δ</strong>} thin films, grown by ion-beam sputtering onto (001)Nb:SrTiO₃ substrates, exhibit a ferroelectric behavior. At the atomic-scale, through high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images, it was possible to identify the presence of polar nanoregions with non-trivial polar topological structures in the SrTiO_{3<strong>-δ</strong>} film, which are induced through oxygen vacancies. To further confirm the presence of strained regions with a polar structure, Raman spectroscopy and high-resolution X-ray diffraction were employed and it was possible to confirm the presence of a tetragonal structure in the SrTiO_{3<strong>-δ</strong>} film, with a tetragonality ratio (<em>c/a</em>) of 1.005. Scanning probe microscopy and macroscopic polarization-electric field hysteresis loops show ferroelectric behavior with maximum polarization of ∼1.5 μC/cm², remnant polarization of ∼0.4 μC/cm² and coercive field of ∼0.3 MV/cm. This work opens a window for exploring novel polar topological effects in sub-10 nm thin film materials for non-volatile memory application.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100486"},"PeriodicalIF":10.3,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588842024000361/pdfft?md5=70265d3922cef60c2dcf35e49b66cafc&pid=1-s2.0-S2588842024000361-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141095864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-dimensional dynamic culture and hypoxic preconditioning synergistically enhance the therapeutic effects of GMSCs on intracerebral hemorrhage","authors":"Zhengtao Yu ,&nbsp;Ying Xia ,&nbsp;Yaxuan He ,&nbsp;Yi Zhuo ,&nbsp;Lite Ge ,&nbsp;Lei Wang ,&nbsp;Qingtao Gao ,&nbsp;Yujia Deng","doi":"10.1016/j.mtnano.2024.100483","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100483","url":null,"abstract":"<div><p>Intracerebral hemorrhage (ICH) is a common cerebrovascular disorder. There is still a high risk of severe neurological deficits even when patients survive ICH. The application of new treatment techniques can reduce mortality, but reversing neurological damage caused by ICH remains challenging. Although cell-based therapies have shown promise in treating cerebral hemorrhage, recurring challenges are premature apoptosis of transplanted cells accompanied by insufficient numbers and lack of engraftment in the target tissue, thus limiting therapeutic efficacy. Here, we show that hypoxic preconditioning combined with three-dimensional (3D) dynamically cultured gingival lamina propria-derived MSCs (GMSCs) significantly improves cell viability, anti-apoptosis ability, and therapeutic efficacy compared with cells cultured in traditional monolayers. Hypoxia-preconditioned 3D-GMSCs also exhibit notable neuroprotective and promote extracellular vesicles (EVs) biogenesis potential as evidenced by transwell in vitro intervention experiments and RNA-seq; further confirmed by characterization analysis of EVs. Furthermore, 3D-GMSCs-EVs derived from hypoxic preconditioning not only had better cell and tissue uptake capabilities but also reduced bleeding in mice with cerebral hemorrhage and improved motor function. Subsequent in vitro experiments on cerebral hemorrhage found that hypoxia-preconditioned 3D-GMSCs-EVs promoted the reduction of neuronal oxidative stress levels and mitochondrial function recovery. This study innovated the culture method of GMSCs, demonstrated effective modification of EVs, and provided new ideas for establishing a cell-free treatment for cerebral hemorrhage.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100483"},"PeriodicalIF":10.3,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2588842024000336/pdfft?md5=8ae7da81d5e17cea194ef6a6861b77ff&pid=1-s2.0-S2588842024000336-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141083656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel nanoporous amorphous/nanocrystalline composite structured RuNiFeCo multicomponent alloys with exceptional catalytic activity for ammonia borane hydrolytic dehydrogenation","authors":"Shiyao Jin,&nbsp;Yanhui Li,&nbsp;Yaping Yang,&nbsp;Wei Zhang","doi":"10.1016/j.mtnano.2024.100485","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100485","url":null,"abstract":"<div><p>The pursuit of high-efficient and cost-effective catalysts for hydrogen generation is imperative to address the energy crisis. Herein, nanoporous RuNiFeCo alloys (np-RuNiFeCo) with high catalytic activity for ammonia borane (AB) hydrolytic dehydrogenation have been prepared by dealloying Fe₂₅Ni_<em>x</em>Co_{40-<em>x</em>}Ru₅B₃₀ (<em>x</em> = 0–40) high-entropy amorphous alloys with low Ru content. The np-RuNiFeCo are composed of an amorphous/hexagonal close-packed Ru nanocrystalline dual-phase structure and exhibit a uniform nanopore/ligament bicontinuous architecture. The morphology, composition, and AB hydrolysis catalytic properties of the np-RuNiFeCo can be regulated by varying the Ni/Co content in the precursors, and the best catalytic activity with a high turnover frequency value of 148.2 <span><math><mrow><msub><mtext>mol</mtext><mrow><mi>H</mi><mn>2</mn></mrow></msub><mspace></mspace><msubsup><mtext>mol</mtext><mtext>Ru</mtext><mrow><mo>‐</mo><mn>1</mn></mrow></msubsup><mspace></mspace><msup><mi>min</mi><mrow><mo>‐</mo><mn>1</mn></mrow></msup></mrow></math></span> and a low apparent activation energy of 25.3 <span><math><mrow><mtext>kJ</mtext><mspace></mspace><msup><mtext>mol</mtext><mrow><mo>‐</mo><mn>1</mn></mrow></msup></mrow></math></span> was obtained when <em>x</em> = 30. Density functional theory simulations indicate that the presence of Ni, synergizing with Fe and Co, promotes electron transfer to Ru and enhances the adsorption energies of both AB and H₂O molecules while reducing the activation barrier for cleaving the H₂O molecule, leading to enhanced intrinsic catalytic activity of the alloy. The exceptional catalytic performance of the np-RuNiFeCo arises from the synergy of multiple principal elements, nanoporous morphology, and amorphous/nanocrystalline heterogeneous interface. In addition, the mechanisms of dealloying and nanoporous structure formation have been discussed based on surface diffusion.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100485"},"PeriodicalIF":10.3,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141083657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe-MOF nanoplatform: Specifically overcoming oxaliplatin resistance in colorectal cancer through multifaceted pathways","authors":"Xiuyan Wan ,&nbsp;Yu Zhang ,&nbsp;Teng Zheng ,&nbsp;Wei Pan ,&nbsp;Wanqi Zhu ,&nbsp;Na Li ,&nbsp;Bo Tang","doi":"10.1016/j.mtnano.2024.100484","DOIUrl":"10.1016/j.mtnano.2024.100484","url":null,"abstract":"<div><p>Oxaliplatin (OXA) is a widely used chemotherapy drug for advanced colorectal cancer (CRC), yet resistance frequently and rapidly develops in patients. Here, we explored a Fe-based metal-organic framework (Fe-MOF) as a nanoplatform to simultaneously deliver OXA and a nitric oxide (NO) donor, specifically <span>l</span>-Arginine (L-Arg). The aim was to overcome OXA resistance in CRC cells, thereby enhancing the anticancer efficacy against drug-resistant CRC. Due to the abundant glutathione (GSH) in tumor tissue, Fe³⁺ in Fe-MOF undergoes reduction to Fe²⁺, causing the collapse of Fe-MOF structure and the subsequent release of OXA and L-Arg. This process is accompanied by GSH depletion, amplifying the effectiveness of OXA against drug-resistant CRC. Fe²⁺ further reacts with overexpressed H₂O₂ to generate ^•OH, inducing direct cell apoptosis and subsequently reacting with L-Arg to rapidly produce NO. NO plays multifaceted roles in the anti-CRC effect, reversing drug resistance in CRC cells through multiple pathways, inducing apoptosis of CRC cells to initiate gas therapy, and reacting with ^•OH to generate highly toxic reactive nitrogen species for cancer cell destruction. This synergistic strategy effectively addresses the challenge of drug resistance in CRC, offering a promising avenue for enhancing the clinical effectiveness of OXA in cases resistant to conventional treatment.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100484"},"PeriodicalIF":10.3,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141037311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-carbon/PIL modified cellulose wearable sensors by computer aided patterning","authors":"Kaiyu Li,&nbsp;Yuan Liang,&nbsp;Xiaojie Lv,&nbsp;Shuohan Huang,&nbsp;Yanping Wang,&nbsp;Yong He,&nbsp;Yumin Xia","doi":"10.1016/j.mtnano.2024.100482","DOIUrl":"10.1016/j.mtnano.2024.100482","url":null,"abstract":"<div><p>The conductive modification of cellulose substrates can be achieved through the attachment of nanocarbons (NCs), enabling the production of a wide range of wearable eco-friendly sensors. However, the economical fabrication of durable wearable devices on cellulose, without disrupting the conjugated structure of NCs, poses an enduring challenge. In this work, we report a stable dispersion system of NCs by using an imidazole type poly (ionic liquid) (PIL-Cl). Various kinds of cellulose substrates only require simple immersion in the dispersion liquid to attain conductivity. The paper and cotton fabric conductors fabricated in this manner exhibited exceptional flexibility, bendability, and electrical stability. We designed joint motion detectors with a large strain range (GF = 1.3) by origami, in which the electrical performance remained stable after undergoing 5000 cycles of maximum deformation (−50 %–150 %). Additionally, by utilizing computer aided technology, NCs-(PIL-Cl) system can create conductive patterns in any form. Based on this, we have manufactured a range of wearable electronic sensors, including masks for monitoring respiration, touch-sensitive circuits and information transmission devices on cotton clothing. This system provides a low-cost option for the fabrication of cellulose wearable sensors, suitable for large-scale production and applications.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100482"},"PeriodicalIF":10.3,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141028838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brilliant thermochromic photonic liquid dominated by electrostatic repulsion","authors":"Siyi Yu ,&nbsp;Dekun Ma ,&nbsp;Chenze Qi ,&nbsp;Dongpeng Yang ,&nbsp;Shaoming Huang","doi":"10.1016/j.mtnano.2024.100481","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100481","url":null,"abstract":"<div><p>It is challenging for traditional methods to generate liquid photonic crystals (LPCs) with brilliant colors and clear self-assembly mechanisms, owing to the major limitations in solvent choice and undesired components. Here, novel LPCs with widely tunable solvents and desired components have been successfully fabricated by non-close-assembling silica particles from silica/ethanol solution into target solvents through alternative centrifugation and sonication. The as-fabricated LPCs exhibit 1) brilliant structural colors from high reflectance (maximal: 91 %) by using solvents with low refractive indexes, much higher than those (20–40 %) of traditional LPCs; 2) tunable color saturation with high precision, difficult for conventional LPCs; and 3) a clearer working mechanism: electrostatic repulsion rather than other interactions majorly dominating the non-close-packing of silica particles in solvents. Additionally, a new type of sensitive thermochromic display unit with thermo-switchable on-off structural colors has been prepared by constructing silica/bi-solvents LPCs. This work not only paves a new way for achieving thermal-responsive LPCs but also offers a new perspective for understanding colloidal assembly.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100481"},"PeriodicalIF":10.3,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140914457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-input optoelectronic synaptic transistor based on amorphous ZnAlSnO for multi-target neuromorphic simulation","authors":"Ruqi Yang ,&nbsp;Yang Tian ,&nbsp;Lingxiang Hu ,&nbsp;Siqin Li ,&nbsp;Fengzhi Wang ,&nbsp;Dunan Hu ,&nbsp;Qiujiang Chen ,&nbsp;Xiaodong Pi ,&nbsp;Jianguo Lu ,&nbsp;Fei Zhuge ,&nbsp;Zhizhen Ye","doi":"10.1016/j.mtnano.2024.100480","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100480","url":null,"abstract":"<div><p>Optoelectronic synapses can perceive both optical and electrical signals, which are critical for the realization of neuromorphic computing. We have rationally designed an optoelectronic synaptic transistor based on amorphous ZnAlSnO for multi-target neuromorphic simulation and recognition. The dual-input models are well operated by applying light pulses on the channel and electric pulses on the gate, and the transformation from short-term potentiation (STP) to long-turn potentiation (LTP) is identified for tunable synaptic plasticity. In the electrical operation mode, a single-layer artificial neural network was established to recognize handwritten digits by LTP/LTD (long-turn depression) modulation, with a recognition accuracy of 89.2 % for the actual device. In the optical operation mode, the processes of repetitive learning, image recognition, and biased/correlated random-walk learning are simulated on the basis of frequency, quantity, and power of light, with an energy consumption per event as low as 4.3 pJ. This work will facilitate the development of future artificial synapses and highlights the potential of amorphous oxide semiconductors for next-generation computer hardware applications.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100480"},"PeriodicalIF":10.3,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140824846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One stone two birds: K2CO3 promoting the in-situ synthesis of K3PO4 coated Na3V2(PO4)3 attached on the porous carbon skeleton for superior sodium storage performance","authors":"Tao Zhou ,&nbsp;Yanjun Chen","doi":"10.1016/j.mtnano.2024.100479","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100479","url":null,"abstract":"<div><p>Na₃V₂(PO₄)₃ (NVP) has attracted much attention because of its open 3D channel, high voltage platform and capacity, but its inherent low ionic and electronic conductivity limits further development. In this work, we successfully achieve the double modification effect by adding K₂CO₃ in situ for the first time. Firstly, the addition of K₂CO₃ induces the formation of porous carbon substrate, which can reduce the accumulation of Na₃V₂(PO₄)₃ particles, thus making the sample particles more dispersed and uniform. Meanwhile, NVP active particles can be uniformly attached to the porous carbon substrate, effectively promoting the electronic conductivity. Secondly, K₂CO₃ can be decomposed and react to produce K₃PO₄ in the sintering process, which is evenly coated on the periphery of NVP grains to form a double-layer conductive interface with excess amorphous carbon. This unique double-interface not only boost specific conductance but also play a protective role to prevent the side reaction in the electrolyte from destroying the cathode material. Moreover, the ex-situ XRD/XPS/SEM/TEM after cycling further demonstrate the stabilized porous skeleton and the existence of K₃PO₄ coatings. Comprehensively, the optimized NVP/C@1%K₃PO₄ sample behaves outstanding electrochemistry capability and cyclic performance. With a high capacity of 122.3 mAh g⁻¹ at 0.1C, this material exhibits excellent cycling stability. At 60C, it delivers a high capacity of 85.1 mAh g⁻¹ and retains 69.1 mAh g⁻¹ after 7000 cycles. Even at 180C, it demonstrates a remarkable capacity of 79.97 mAh g⁻¹ and maintains 49.8 mAh g⁻¹ after 14,000 cycles. When integrated into a full battery, the assembled NVP/C@1%K₃PO₄//CHC battery exhibits a reversible capacity of 112.2 mAh g⁻¹ at 0.1C and retains 70 mAh g⁻¹ at 2C, highlighting its promising potential for commercial applications.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100479"},"PeriodicalIF":10.3,"publicationDate":"2024-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140815767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The anisotropic sublimation induces rhombohedral to rock-salt phase transformation of chalcogenide SnSb2Te4 two-dimensional nanomaterial","authors":"Qing Zhang ,&nbsp;Menglong Wang ,&nbsp;Jianfei Zhang ,&nbsp;Dongfeng Ma ,&nbsp;Wei Li ,&nbsp;Kaiwen Wang ,&nbsp;Yongjin Chen ,&nbsp;Xiaomeng Yang ,&nbsp;Zhipeng Li ,&nbsp;Jixiang Cai ,&nbsp;Shengcheng Mao ,&nbsp;Ze Zhang ,&nbsp;Xiaodong Han","doi":"10.1016/j.mtnano.2024.100478","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100478","url":null,"abstract":"<div><p>We report the sublimation and phase transformation mechanisms of a two-dimensional (2D) chalcogenide SnSb₂Te₄ using a lab-developed <em>in-situ</em> electro-thermal testing system on a C_s-corrected transmission electron microscope. It reveals that the sublimation process is primarily governed by the surface energy mechanism, following an anisotropic route. The van der Waals (vdW) layers ending with Te atoms lead to the preferential sublimation on (003) plane, with the (1 <span><math><mrow><mover><mn>1</mn><mo>‾</mo></mover></mrow></math></span> 4) and (1<span><math><mn>17</mn></math></span>) planes accommodating the sublimation. It is uncovered for the first time, that the preferential and accommodated sublimation of Te and Sb atoms along the vdW planes results in short-range diffusion inducing a phase transition from rhombohedral SnSb₂Te₄ to rock-salt (Sn_1-xSb_x)Te. These results highlight complex physics processes of 2D materials under service conditions and the route of atomic-resolved electro-thermal research platforms for investigations of complex atomistic mechanisms of 2D materials by thermal-electric external fields.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100478"},"PeriodicalIF":10.3,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140649874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2D Bi-doped SnSe ferroelectric memristor integrating all-in-one sensing-memory-computing","authors":"Hong Wang ,&nbsp;Yusong Tang ,&nbsp;Zhisheng Wang ,&nbsp;Yuli Xue ,&nbsp;Jialiang Yang ,&nbsp;Jikang Xu ,&nbsp;Biao Yang ,&nbsp;Shufang Wang ,&nbsp;Xiaobing Yan","doi":"10.1016/j.mtnano.2024.100477","DOIUrl":"https://doi.org/10.1016/j.mtnano.2024.100477","url":null,"abstract":"<div><p>Two-dimensional (2D) layered ferroelectric materials are an emerging semiconductor expected to satisfy people's pursuit of post-Moore era of the small-size, high-efficiency, and intellectualization. However, the asymmetric coercive-field of reported 2D ferroelectrics which was not conducive to the linearity and symmetry of conductance regulation, limiting their application. Here, we have confirmed Bi-doped can greatly enhance the symmetry of a coercive voltage (±2.4 V) of 2D-layered SnSe, and designed a multifunctional memristor whose conductance is regulated by the ferroelectric polarization direction. As the synaptic long/short-term plasticity (PPF, PTP, symmetrical STDP), the bio-fire and temporal/spatial integration functions of neurons might be emulated by changing the parameters of electrical pulses. Furthermore, under the synergistic effect of photoelectric field, the “OR/AND” logic computing and store in situ was experimentally demonstrated, meanwhile, 8-level nonvolatile photoresponses and the “LOVE” information of the 3-bit octal number combination was locally sensed, demodulated and stored. This work can provide a new way for the future development of smart hardware in photoelectric neuromorphic and edge computing systems.</p></div>","PeriodicalId":48517,"journal":{"name":"Materials Today Nano","volume":"26 ","pages":"Article 100477"},"PeriodicalIF":10.3,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140619447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}