{"title":"Recent advances in conducting gels for flexible and stretchable smart electronic devices: A comprehensive review","authors":"Bablesh Gupta , Suman Kalyan Samanta , Ranbir Singh","doi":"10.1016/j.mattod.2024.09.001","DOIUrl":"10.1016/j.mattod.2024.09.001","url":null,"abstract":"<div><div>Conducting gels have garnered significant attention due to their distinctive properties, such as unique electrical/thermal conductivity, biocompatibility, flexibility, stretchability, and transparency. These gels adeptly combine the viscoelastic features with the combination of organic, metal, and semiconductor components. Consequently, these gels have become the subject of extensive exploration across various fields, encompassing tactile sensors, power generation systems, actuators, wearable electronics, and biomedical devices. Their potential applications extend beyond these fields to encompass human–machine interfaces, artificial intelligence, and other implementations. This review provides a comprehensive examination of the synthesis methods for various electrically conducting gels, such as hydrogels, organogels, metal–organic gels, and perovskite gels. Furthermore, this study investigates the promising applications of these gels across various fields, focusing on their potential use in energy storage, energy harvesting devices, and advanced sensors. Resolutely, the review outlines both the prospects and challenges in further research endeavors concerning the development and utilization of these remarkable gels for boosting the evolution of cutting-edge mechanically versatile intelligent stretchable skin-like devices.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 681-709"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.08.019
Xinping Luo , Xincong Li , Shiyu Li , Chenxi Zhou , Jing Li , Zhanwei Zhou , Minjie Sun
{"title":"Metabolic intervention mitochondria nanomotors breakdown redox homeostasis for boosting oxidative stress-dependent antitumor therapy","authors":"Xinping Luo , Xincong Li , Shiyu Li , Chenxi Zhou , Jing Li , Zhanwei Zhou , Minjie Sun","doi":"10.1016/j.mattod.2024.08.019","DOIUrl":"10.1016/j.mattod.2024.08.019","url":null,"abstract":"<div><div>Aberrant metabolic balance in malignant tumors shapes defensive redox homeostasis and protected tumor cells from oxidative stress damage, consequently impeding clinical transformation process of oxidative stress-dependent anti-tumor therapies represented by chemodynamic therapy and immunotherapy. Herein, a rational designed mitochondria nanomotor was developed by coating a GSH-responsive functional Pt(IV) prodrug layer DP on magnetic iron oxide nanoparticles (MN), which can thoroughly breakdown redox homeostasis by metabolic intervention strategy. Specifically, DP loading two dichloroacetic acid (DCA) axial ligands was stimuli-responsively reduced into Pt(II) and DCA molecules in highly reductive tumor cells, accompanied with glutathione elimination and oxidative stress counteraction weakening. Subsequently, DCA increased pyruvate influx into the mitochondria by pyruvate dehydrogenase activation and enduringly elevated oxidative phosphorylation level, breaking the tumor redox homeostasis thoroughly, contributing to 7.5-fold amplifying hydrogen peroxide production and sensitizing chemodynamic therapy mediated by MN, finally resulting in inspiring 89.5% tumor suppression rate on triple negative breast cancer model. In short, this work realized comprehensive and sustainable oxidative stress elevation of the intracellular environment by metabolic intervention strategy and provided an ingenious perspective of augmenting oxidative stress-dependent anti-tumor therapies.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 187-200"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.07.012
Yao Yang , Xiaotong Liang , Qimanguli Saiding , Jiachan Lin , Jinyuan Li , Wenyan Wang , Ping Huang , Li Huang , Wenfeng Zeng , Jinhai Huang , Hongzhong Chen , Wei Tao , Xiaowei Zeng
{"title":"Light-activated polymeric crosslinked nanocarriers as a checkpoint blockade immunoregulatory platform for synergistic tumor therapy","authors":"Yao Yang , Xiaotong Liang , Qimanguli Saiding , Jiachan Lin , Jinyuan Li , Wenyan Wang , Ping Huang , Li Huang , Wenfeng Zeng , Jinhai Huang , Hongzhong Chen , Wei Tao , Xiaowei Zeng","doi":"10.1016/j.mattod.2024.07.012","DOIUrl":"10.1016/j.mattod.2024.07.012","url":null,"abstract":"<div><div>Photodynamic therapy (PDT) can enhance immune checkpoint blockade (ICB) antitumor immunity. However, PDT can significantly exacerbate the hypoxic tumor microenvironment and stimulate tumor neovascularization, promoting tumor invasion and metastasis. Camptothecin can inhibit angiogenesis by down-regulating hypoxia-inducible factor 1α (HIF-1α). Therefore, this study proposed to combine camptothecin with PDT for the first time to alleviate the disadvantage of PDT, and play its dual role of chemotherapy and antiangiogenesis. Here, a light-activated nanocarrier crosslinked the anti-PD-L1, photosensitizer, and camptothecin prodrug mildly with a thioketal bond for checkpoint blockade immunoregulation was designed. Firstly, photosensitizer-induced PDT and immunogenic cell death effect significantly increase T cell infiltration (33.3 % CD8<sup>+</sup> increase), enhancing ICB antitumor immunity. Secondly, the antiangiogenic effect of camptothecin was beneficial for alleviating hypoxic tumor microenvironment exacerbated by PDT (HIF-1α expression decreased in tumor cells). Thirdly, light-activated release facilitates tumor accumulation (3.22 times) and controlled drug release. Thus, the immune checkpoint blockade combined with PDT and an antiangiogenic therapy of camptothecin creates a positive feedback co-delivery platform that exemplifies cascaded synergistic tumor therapy by checkpoint blockade immunoregulation. Besides, it also introduces a new strategy for combining small molecule drugs with macromolecules like proteins to treat various diseases.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 1-22"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.09.008
Siyuan Sun , Kun Fan , Jie Yang , Jiaxiang Liu , Xiang Li , Lihua Zhao , Xin He , Xiangyang Liu , Shenli Jia , Qi Li
{"title":"Surface modification engineering on polymer materials toward multilevel insulation properties and subsequent dielectric energy storage","authors":"Siyuan Sun , Kun Fan , Jie Yang , Jiaxiang Liu , Xiang Li , Lihua Zhao , Xin He , Xiangyang Liu , Shenli Jia , Qi Li","doi":"10.1016/j.mattod.2024.09.008","DOIUrl":"10.1016/j.mattod.2024.09.008","url":null,"abstract":"<div><div>Polymer materials have played crucial roles in current electrical device/equipment especially in rapidly developed dielectric energy storage field, due to their excellent insulation property, low dielectric loss, lightweight, flexibility and good processability. Typical several strategies including monomer/molecule structure design, aggregation structure regulation and nanocomposite strengthening have acquired numerous processes. However, it is always ignored in existed work that insulation failure of polymer material generally starts from surface, and high-frequency electric field can greatly accelerate this failure process. Here surface modification engineering (SME) on polymer materials with a scalable, rapid and low-cost characteristic presents unique superiority in solving current problems. In this Review, we summarize various SME approaches on polymer materials and discuss introduced variations in surface morphology, physicochemical structure and charge transport behavior. We analyze how particular chemical groups anchoring, organic–inorganic deposition, physicochemical evolution and micro-nano structure design of modification surface can be modulated to obviously enhance multilevel insulation properties (from surface to interior even under high-frequency electric field) and subsequent dielectric energy storage performances. In addition, we highlight the multifunctionality and stability of modification surface on polymer materials, which examines the possibility of synergistically improving other performances like antifouling and anti-corrosion toward complicated/hash insulation scenes and advanced energy storage. Finally, we analyze current challenges in this field and offer a prospect for future development toward high-performance and large-scale practical applications.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 758-823"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.09.016
Xiaobing Yan , Jiangzhen Niu , Ziliang Fang , Jikang Xu , Changlin Chen , Yufei Zhang , Yong Sun , Liang Tong , Jianan Sun , Saibo Yin , Yiduo Shao , Shiqing Sun , Jianhui Zhao , Mario Lanza , Tianling Ren , Jingsheng CHEN , Peng Zhou
{"title":"High-performance in domain matching epitaxial La:HfO2 film memristor for spiking neural network system application","authors":"Xiaobing Yan , Jiangzhen Niu , Ziliang Fang , Jikang Xu , Changlin Chen , Yufei Zhang , Yong Sun , Liang Tong , Jianan Sun , Saibo Yin , Yiduo Shao , Shiqing Sun , Jianhui Zhao , Mario Lanza , Tianling Ren , Jingsheng CHEN , Peng Zhou","doi":"10.1016/j.mattod.2024.09.016","DOIUrl":"10.1016/j.mattod.2024.09.016","url":null,"abstract":"<div><div>Next-generation synaptic devices with multiple non-volatile states, high endurance and high-temperature operation are highly desired in the era of big data. Here, high-performance memristors are fabricated using La: HfO<sub>2</sub>(HLO)/La<sub>2/3</sub>Sr<sub>1/3</sub>MnO<sub>3</sub>(LSMO) heterostructures on Si substrate, with domain matching epitaxial structure using SrTiO<sub>3</sub>(STO) as buffer layer. The devices possess high reliability, nonvolatility, low fluctuation rate (<2.5 %) and the highest number of states per cell (32 states or 5 bits) among the reported Hf-based ferroelectric memories at room temperature (25 °C) and high temperature (85 °C). Moreover, the device exhibits high endurance of 10<sup>9</sup> cycles and excellent uniformity at the room and high temperatures. The functionality of long-term plasticity in the synaptic device is obtained with high precision (128 states), reproducibility (cycle-to-cycle variation, ∼4.7 %) and linearity. Then, we simulate one system using the stable performance at high temperature that detects the speed of moving targets, which achieves high accuracy of 98 % and 99 % on Human Motion and MNIST datasets, respectively. Furthermore, we have built a hardware circuit to realize a spiking neural network (SNN) system for digital pattern online learning, which demonstrates the capability of the device in brain-like computing applications.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 365-373"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.08.026
Jiaming Sun , Shanyu Zhao , Xiangsong Wang , Weiqing Kong , Wei Li , Shuangfei Wang , Shouxin Liu , Shuangxi Nie
{"title":"Minimizing enthalpy of evaporation in solar steam generation: An emerging strategy beyond theoretical evaporation limitation","authors":"Jiaming Sun , Shanyu Zhao , Xiangsong Wang , Weiqing Kong , Wei Li , Shuangfei Wang , Shouxin Liu , Shuangxi Nie","doi":"10.1016/j.mattod.2024.08.026","DOIUrl":"10.1016/j.mattod.2024.08.026","url":null,"abstract":"<div><div>Solar steam generation presents a promising solution to address water shortages in an eco-friendly and low-cost manner. Numerous broad-band light absorbers and topological designs have been developed to enhance the evaporation rate. However, when considering solely solar energy input, the evaporation rate faces theoretically limitations, assuming 100 % energy conversion efficiency, due to the latent heat requirement for water vaporization. As material selection and structural design reach the saturation of novelty, researchers are increasingly focusing on the enthalpy of evaporation of water (EEW). In this review, we briefly outline factors influencing net heat input, taking note of the influence of environmental energy, and then delve into the concept of EEW in evaporators, elucidating regulation principle, characterization and analysis methods related to EEW systematically. Subsequently, we review the latest research progress on optimization strategies aimed at minimizing EEW, including the modulation of hydration state and the adjustment of pore structure in evaporators. Finally, we discuss current challenges and future research opportunities in minimizing EEW in solar steam generation.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 619-647"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.08.028
Siyu Liu, Tongqi Wen, A.S.L. Subrahmanyam Pattamatta, David J. Srolovitz
{"title":"A prompt-engineered large language model, deep learning workflow for materials classification","authors":"Siyu Liu, Tongqi Wen, A.S.L. Subrahmanyam Pattamatta, David J. Srolovitz","doi":"10.1016/j.mattod.2024.08.028","DOIUrl":"10.1016/j.mattod.2024.08.028","url":null,"abstract":"<div><div>Large language models (LLMs) have demonstrated rapid progress across a wide array of domains. Owing to the very large number of parameters and training data in LLMs, these models inherently encompass an expansive and comprehensive materials knowledge database, far exceeding the capabilities of individual researcher. Nonetheless, devising methods to harness the knowledge embedded within LLMs for the design and discovery of novel materials remains a formidable challenge. We introduce a general approach for addressing materials classification problems, which incorporates LLMs, prompt engineering, and deep learning. Utilizing a dataset of metallic glasses as a case study, our methodology achieved an improvement of up to 463% in prediction accuracy compared to conventional classification models. These findings underscore the potential of leveraging textual knowledge generated by LLMs for materials especially in the common situation where datasets are sparse, thereby promoting innovation in materials discovery and design.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 240-249"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.08.020
Voichita Mihali , Piotr Jasko , Michal Skowicki , Cornelia G. Palivan
{"title":"Controlled enzymatic reactions by programmed confinement in clusters of polymersomes and Janus nanoparticles","authors":"Voichita Mihali , Piotr Jasko , Michal Skowicki , Cornelia G. Palivan","doi":"10.1016/j.mattod.2024.08.020","DOIUrl":"10.1016/j.mattod.2024.08.020","url":null,"abstract":"<div><div>Compartmentalization is essential in nature for precisely controlling metabolic reactions, exchange of molecules and signals with the environment and inter-cell communication. While artificial organelles and cells offer simplified conditions for studying enzymatic reactions, it is still challenging to spatially and directionally control them. Here we present self-organized clusters combining catalytic nanocompartments (CNCs) loaded with different enzymes that are specifically attached to Janus nanoparticles (JNPs). The clusters are modularly assembled through programmed DNA hybridization. The asymmetry of the JNPs has unique advantages by allowing a precise arrangement of the CNCs and enabling, in a modular manner, various reaction configurations, including single, parallel and cascade enzymatic reactions. Additionally, JNP-CNCs clusters integrating imaging and therapeutic nanocompartments support nanotheranostic applications by simultaneous precise detection of their <em>in vitro</em> position and production of reactive oxygen species (ROS) that induce apoptosis. Such JNP-CNCs clusters provide both spatial and directional control of enzymatic reactions at the nanoscale and have high potential in biomedical applications, including protein therapy and theranostics.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 201-217"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials TodayPub Date : 2024-11-01DOI: 10.1016/j.mattod.2024.08.009
Haiyue Zu , Lizhen Zheng , Mengke Huo , Kevin Liu , Chris Halling Dreyer , Yuantao Zhang , Xuan He , Ye Li , Li Zou , Le Huang , Xueting Yi , Antonia Rujia Sun , Xiangbo Meng , Keda Shi , Huijuan Cao , Xiaoshui Zu , Wenxue Tong , Dick Hokiu Chow , Xinluan Wang , Yuxiao Lai , Ling Qin
{"title":"Tree-inspired magnesium hybrid column for preventing hip collapse in steroid-associated osteonecrosis in bipedal emus","authors":"Haiyue Zu , Lizhen Zheng , Mengke Huo , Kevin Liu , Chris Halling Dreyer , Yuantao Zhang , Xuan He , Ye Li , Li Zou , Le Huang , Xueting Yi , Antonia Rujia Sun , Xiangbo Meng , Keda Shi , Huijuan Cao , Xiaoshui Zu , Wenxue Tong , Dick Hokiu Chow , Xinluan Wang , Yuxiao Lai , Ling Qin","doi":"10.1016/j.mattod.2024.08.009","DOIUrl":"10.1016/j.mattod.2024.08.009","url":null,"abstract":"<div><div>Biodegradable magnesium (Mg)-based materials show promise in managing musculoskeletal diseases, attributed to their desired proper mechanical strength, and facilitating self-regenerative processes via spatiotemporal degradation during treatments for non-weight-bearing skeletal sites. However, to achieve a long-term steady state of the local biomechanical environment, it is essential to coupling implant degeneration and neo-tissue ingrowth without sacrificing local mechanical integrity. Steroid-associated osteonecrosis (SAON) presents a formidable clinical challenge, necessitating robust mechanical support to prevent collapse of weight-bearing hip joints while reversing pathological progression. Herein, a novel tree-inspired Mg hybrid column (Mg + BC) incorporating cannulated Mg screw and injectable Mg-containing bone cement (BC) is reported. Mg + BC tuned the gradual release of mineral ions (Mg, Ca, P), OH<sup>–</sup> and H<sub>2</sub> via electrochemical suppression and crystal re-deposition during degradation. Finite element analysis demonstrated that Mg + BC significantly reduced the proportion of relatively high load-bearing regions (CD: 26.0 %, Mg: 26.6 %, BC: 18.2 %, Mg + BC: 17.5 %) and effectively shifted the predominant loading from subchondral trabeculae to the femoral shaft cortex. The efficacy of the tree-inspired Mg hybrid column was validated in a clinically relevant bipedal emu model of SAON. Compared to standalone Mg screws, Mg + BC exhibited sustained degradation and enhanced bone-implant contact, indicating improved alignment between material degradation and tissue regeneration. After 6 months <em>in vivo</em>, the implant residue volume was significantly higher in the Mg + BC group (73.53 ± 10.90 %) compared to the Mg screw group (39.10 ± 11.31 %). The optimized degradation pattern of Mg + BC facilitated bone regeneration through modulation of macrophage recruitment and M1-to-M2 polarization shift. Notably, Mg + BC treatment significantly reduced hip joint collapse incidence (1/10) compared to CD group (7/10). The Mg + BC group maintained greater articular cartilage thickness in the intact region (1.74 ± 0.25 mm) compared to CD group (0.71 ± 0.15 mm). Gait analysis revealed substantial improvement in stride length for the Mg + BC group (87.14 ± 2.29 cm) compared to CD group (60.03 ± 1.31 cm), indicating maintenance of the hip anatomical structure and functional performance. Taken together, the tree-inspired Mg hybrid column is expected to be a unique hybrid system for bone tissue regeneration and prevention of joint collapse in weight-bearing regions affected by SAON, offering promising translational potential for clinical application.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 113-138"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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":"Bottom-up growth of high-quality BiOCl twisted homostructures via a precursor regulation strategy","authors":"Pengfei Liu, Li-ping Feng, Xiaodong Zhang, Yulong Yang, Xiaoqi Zheng, Xitong Wang","doi":"10.1016/j.mattod.2024.07.014","DOIUrl":"10.1016/j.mattod.2024.07.014","url":null,"abstract":"<div><div>Twisted stacking-induced moiré superlattice of two-dimensional (2D) materials have aroused surging interest due to their novel properties and promising applications in quantum technologies. However, problems such as unavoidable interfacial contamination in the prevailing mechanically transferred method, and limited members of 2D materials for constructing twisted homostructures/heterostructures impede the advance of 2D moiré superlattice. Here, bottom-up growth of high-quality bismuth oxychloride twisted homostructures (BiOCl THS) is achieved by a precursor-regulated chemical vapor deposition (CVD) method. In contrast to the conventional screw-dislocation-driven growth of spiral-like nanosheets, the as-prepared BiOCl THSs show a wide range of twist angles and large lateral sizes. A unique secondary twisted nucleation growth mechanism is revealed by multiple characterizations and theoretical calculations. It is demonstrated that the adsorption of polar H<sub>2</sub>O molecule on BiOCl can lead to a stable nucleation with rotation angles. Furthermore, benefitting from the bottom-up growth of the twisted homostructures, clear moiré patterns and moiré potential induced variation of interlayer coupling and exciton resonances were observed in the BiOCl THS. Our work provides a promising strategy for controllable preparation of high-quality 2D moiré superlattice.</div></div>","PeriodicalId":387,"journal":{"name":"Materials Today","volume":"80 ","pages":"Pages 40-49"},"PeriodicalIF":21.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}