IF 17.1 1区材料科学

ACS Nano Pub Date : 2026-10-21 DOI: 10.1021/acsnano.6c07269

Xin Zhang,Keesiang Lim,Tomohiro Shima,Elma Sakinatus Sajidah,Masaharu Hazawa,Masahide Kikkawa,Toshio Ando,Richard W. Wong

{"title":"Zooming into the Cytoskeleton: Nanodefect-Initiated Microtubule Catastrophe Filmed by High-Speed Atomic Force Microscopy","authors":"Xin Zhang,Keesiang Lim,Tomohiro Shima,Elma Sakinatus Sajidah,Masaharu Hazawa,Masahide Kikkawa,Toshio Ando,Richard W. Wong","doi":"10.1021/acsnano.6c07269","DOIUrl":"https://doi.org/10.1021/acsnano.6c07269","url":null,"abstract":"Microtubule catastrophe is widely attributed to an end-driven loss of the GTP cap, implying that structural failure is confined to filament termini. Here, we show that this view is incomplete. Using high-speed atomic force microscopy (HS-AFM), we directly visualize nanoscale structural failure in paclitaxel-treated microtubules in real time. We identify spontaneous lattice nanodefects that emerge within the filament shaft and act as internal initiation sites for disassembly. These defects arise from localized protofilament decoupling and lattice strain accumulation, which disrupt the cooperative interactions within the microtubule wall. Once a critical threshold is reached, these sites nucleate disassembly that propagates as distinct collapse trajectories, including bidirectional spreading from intralattice defects and inward convergence from opposing ends, in addition to classical end-initiated depolymerization. Rather than uniformly stabilizing the lattice, paclitaxel maintains microtubules in a metastable state in which internal stress heterogeneity persists and enables defect-driven failure. Our results establish lattice decoupling as a primary structural trigger of microtubule catastrophe and redefine it as a defect-mediated, spatially encoded transition. These findings provide a nanoscale mechanistic framework for understanding heterogeneous responses to microtubule-targeting chemotherapeutics, suggesting that drug resistance may arise from modulation of lattice integrity and defect propagation rather than drug binding alone.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"60 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221514","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}

引用次数: 0

Achieving Robust Ferroelectric Properties of Hf0.6Zr0.4O2 Thin Films through the Pseudofield-Inducing Effect of Al0.85Sc0.15N Bottom Electrode 利用Al0.85Sc0.15N底电极的赝场诱导效应实现Hf0.6Zr0.4O2薄膜的鲁棒铁电性能

IF 17.1 1区材料科学

ACS Nano Pub Date : 2026-10-20 DOI: 10.1021/acsnano.6c13488

Han Sol Park,Seungheon Choi,Min Kyu Yeom,Sanghyup Lee,Sahngik A. Mun,Cheol Seong Hwang

{"title":"Achieving Robust Ferroelectric Properties of Hf0.6Zr0.4O2 Thin Films through the Pseudofield-Inducing Effect of Al0.85Sc0.15N Bottom Electrode","authors":"Han Sol Park,Seungheon Choi,Min Kyu Yeom,Sanghyup Lee,Sahngik A. Mun,Cheol Seong Hwang","doi":"10.1021/acsnano.6c13488","DOIUrl":"https://doi.org/10.1021/acsnano.6c13488","url":null,"abstract":"Although ferroelectric (FE) Zr-doped HfO2 (HZO) is a promising material for ferroelectric random-access memory (FeRAM), achieving high remnant polarization (Pr) with a low coercive field (EC) at film thicknesses ≲10 nm remains challenging. This work demonstrates a multifunctional bottom electrode (BE) strategy by inserting a pristine, down-poled ferroelectric Al1–xScxN (ASN) layer into the BE, thereby inducing high mechanical stress and an internal field during HZO crystallization. The pristine down-polarization of ASN increased the c-axis preference of the overlying HZO film, as indicated by the contrast in the electrical characteristics and surface potential responses depending on the ASN poling direction. The ASN-containing BE imposes additional in-plane tensile stress on HZO due to ASN’s low thermal expansion coefficient, facilitating orthorhombic phase formation. Consequently, 9 nm-thick HZO on the ASN-containing BE exhibits a large 2Pr of 81 μC/cm2 by conventional polarization-electric field (P-E) measurement and 68 μC/cm2 by positive-up-negative-down (PUND) compared with that of the TiN BE (43 μC/cm2, and 41 μC/cm2) with a pristine negative-bias imprint. These effects enable a high 2Pr/EC ratio without a significant increase in EC after wake-up, resulting in faster switching characteristics. Furthermore, it also enables the 5 nm-thick HZO film to overcome the pristine pinched hysteresis associated with tetragonal-phase stabilization, thereby achieving robust ferroelectric performance while suppressing wake-up behavior.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"73 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218800","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}

引用次数: 0

Peptide Coacervates with Cathepsin B-Triggered Intracellular Cargo Release 肽凝聚与组织蛋白酶b触发的细胞内货物释放

IF 17.1 1区材料科学

ACS Nano Pub Date : 2026-10-20 DOI: 10.1021/acsnano.6c10625

Pooja Sharma,Soheil Haddadzadegan,Mahsa Ghafouri,Sushanth Gudlur,Ali Miserez

{"title":"Peptide Coacervates with Cathepsin B-Triggered Intracellular Cargo Release","authors":"Pooja Sharma,Soheil Haddadzadegan,Mahsa Ghafouri,Sushanth Gudlur,Ali Miserez","doi":"10.1021/acsnano.6c10625","DOIUrl":"https://doi.org/10.1021/acsnano.6c10625","url":null,"abstract":"Understanding the molecular grammar of liquid–liquid phase separation has enabled rational design of peptide coacervates as intracellular therapeutic carriers with tunable viscoelasticity, controlled cargo partitioning, and enhanced cellular uptake. However, sequence-level determinants governing coacervate disassembly remain poorly characterized. Encoding protease-recognition motifs within phase-separating peptides offers controlled, localized catalytic disassembly without requiring global perturbation via macroscopic triggers such as pH, ionic strength, temperature, or redox potential. Yet, enzymatic cleavage of coacervates is spatially biased and constrained by limited enzyme partitioning, restricted substrate accessibility, and altered kinetics relative to the dilute phase. Here, we test whether the lysosomal protease cathepsin B (CatB)─often upregulated in cancer cells─acts on coacervates assembled from phase-separating peptides encoding CatB-recognition motifs to enable intracellular cargo release in cancer cells. Common CatB-recognition motifs (GFLG and EVCit), developed for linker-based delivery systems under dilute conditions, preserved phase separation but exhibited poor CatB-triggered cleavage and cargo release. In contrast, a de novo motif, FRFV, designed from CatB subsite preferences, retained catalytic activity as confirmed by mass spectrometry and enabled protease-triggered cargo release in vitro and in cancer cells. Thus, protease-recognition motifs require reevaluation within dense-phase architectures to enable efficient intracellular cargo release through coacervate disassembly.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"34 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221515","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}

引用次数: 0

Monolithic 3D Stacked Carbon Nanotube/Indium–Tin–Oxide Complementary Transistors for High-Frequency Logic and Sense Amplifier Integration with Memory 单片3D堆叠碳纳米管/铟锡氧化物互补晶体管用于高频逻辑和感测放大器与存储器集成

IF 17.1 1区材料科学

ACS Nano Pub Date : 2026-10-20 DOI: 10.1021/acsnano.6c11662

Ranhui Liu,Yuansheng Zhao,Shenwu Zhu,Tianyue Fu,Zhiyu Wang,Yuzhe Zhu,Chao Wang,Lianmao Peng,Qianlan Hu

{"title":"Monolithic 3D Stacked Carbon Nanotube/Indium–Tin–Oxide Complementary Transistors for High-Frequency Logic and Sense Amplifier Integration with Memory","authors":"Ranhui Liu,Yuansheng Zhao,Shenwu Zhu,Tianyue Fu,Zhiyu Wang,Yuzhe Zhu,Chao Wang,Lianmao Peng,Qianlan Hu","doi":"10.1021/acsnano.6c11662","DOIUrl":"https://doi.org/10.1021/acsnano.6c11662","url":null,"abstract":"Complementary field-effect transistors (CFETs) maximize 3D integration density but face two fundamental bottlenecks: the stringent thermal budget of silicon-based sequential stacking and the inherent electrical mismatches in homogeneous material systems. To overcome these challenges, we demonstrate a monolithic 3D-stacked heterogeneous CFET architecture integrating back-end-of-line (BEOL)-compatible p-type carbon nanotube (CNT) and n-type indium–tin–oxide (ITO) channels. Both materials exhibit high carrier mobility and low-temperature process, which simultaneously resolve the bipolar transport disparity and mitigate thermal degradation. Consequently, the resulting CFET inverters exhibit favorable statistical uniformity and symmetric transfer characteristics, enabling the fabrication of versatile logic gates. Besides, a 5-stage ring oscillator (RO) achieves a high frequency of 334 MHz, with a 0.3 ns stage delay, demonstrating potential applications of CFET in high-speed digital circuits. Furthermore, bridging logic and memory, a CFET-based sense amplifier (SA) is integrated with an ITO-based planar capacitorless (2T0C) dynamic random-access memory (DRAM) cell. This hybrid system achieves data write/read operations and signal amplification, providing an architectural platform for next-generation ultradense 3D logic and memory systems.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"73 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221497","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}

引用次数: 0

In Situ Reaction-Induced Surface Lattice Strengthening of CsxFA1–xPbI3 Perovskite Quantum Dots for Solar Cells with 18.55% Efficiency Cs x FA1 - x PbI3钙钛矿量子点在太阳能电池中的原位反应诱导表面晶格增强，效率为18.55%

IF 17.3 1区材料科学

ACS Nano Pub Date : 2026-10-20 Epub Date: 2026-10-06 DOI: 10.1021/acsnano.6c13217

Xingyu Wang, Guoliang Wang, Shuhuai Xiao, Shurui Chi, Linggang Zhu, Zhimei Sun, Xiaoliang Zhang

{"title":"In Situ Reaction-Induced Surface Lattice Strengthening of CsxFA1–xPbI3 Perovskite Quantum Dots for Solar Cells with 18.55% Efficiency","authors":"Xingyu Wang, Guoliang Wang, Shuhuai Xiao, Shurui Chi, Linggang Zhu, Zhimei Sun, Xiaoliang Zhang","doi":"10.1021/acsnano.6c13217","DOIUrl":"10.1021/acsnano.6c13217","url":null,"abstract":"Cesium-formamidinium lead triiodide perovskite quantumdots (CsxFA1–xPbI3 PQDs) exhibit great potential for next-generationphotovoltaics,but the formamidinium (FA+) cations at the surface latticeof PQDs suffer from dissociation from the surface lattice due to weakbinding strength, markedly deteriorating the optoelectronic performanceand stability of PQDs. Herein, 2-(aminomethyl)pyridine (2-PyMA) isscreened out to in situ react with the surface FA+ cation,forming the N-(2-methylpyridine)formamidinium (2-MPyFA+) cation. The in situ formed 2-MPyFA+ cation robustlyanchors on the surface lattice of PQDs as functional ligands, whichsubstantially suppresses the formation of surface lattice vacancies,resulting in PQDs with enhanced optoelectronic performance and stabilitybeing obtained. Additionally, PQDs also exhibit high orientation inPQD solids with enhanced electronic coupling, facilitating chargecarrier transport between adjacent PQDs. Consequently, PQD solar cellsyield an efficiency of up to 18.55%, representing the highest efficiencyfor CsxFA1–xPbI3 PQD solar cells. This study demonstrates valuableinsights into the chemical design principles of surface ligands withexecutable approaches to realizing high-efficiency solar cells orother emerging optoelectronic devices.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"20 41","pages":"27971–27982"},"PeriodicalIF":17.3,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088334","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}

引用次数: 0

Strain Coupled (110)-Oriented Lithium Anodes for High-Rate and High-Capacity Epitaxial Growth 用于高速率和高容量外延生长的应变耦合（110）取向锂阳极

IF 17.3 1区材料科学

ACS Nano Pub Date : 2026-10-20 Epub Date: 2026-10-05 DOI: 10.1021/acsnano.6c09189

Aoxuan Wang, Haoran Li, Zhibin Xu, Hao Chen, Xiaofan Lv, Yumeng Zhao, Dehua Xu, Zhenglin Hu, Qingtao Ma, Xingjiang Liu, Jiayan Luo

{"title":"Strain Coupled (110)-Oriented Lithium Anodes for High-Rate and High-Capacity Epitaxial Growth","authors":"Aoxuan Wang, Haoran Li, Zhibin Xu, Hao Chen, Xiaofan Lv, Yumeng Zhao, Dehua Xu, Zhenglin Hu, Qingtao Ma, Xingjiang Liu, Jiayan Luo","doi":"10.1021/acsnano.6c09189","DOIUrl":"10.1021/acsnano.6c09189","url":null,"abstract":"Lithium metal is considered as the ultimate anode forhigh-energy-densitybatteries, yet its practical realization is thwarted by dendrite proliferationand chemomechanical interfacial instability. While epitaxial growthon crystallographically textured substrates provides a template forordered deposition, sustaining this ordered growth under high capacitiesand current densities remains a formidable kinetic challenge. Herein,we overcome this barrier by engineering an elastic (110)-orientedlithium anode (e-Li (110)) comprising a conductive polymer scaffold.The e-Li (110) integrates preferred (110) crystallographic orientationwith a mechanically coupled strain corresponding to the optimized4% tensile-strain condition. Consequently, this strain-engineeringstrategy enables a capacity of 30 mAh cm–2 and currentdensity of 25 mA cm–2 before lithium epitaxial breakdown.5.9 Ah Li || LiNi0.8Co0.1Mn0.1O2 (NCM811) pouch cells with a high energy density of 509.8Wh kg–1 show 90% capacity retention after 140 cycles.In sulfide-based all-solid-state batteries (ASSBs), e-Li (110) anodeenables stable cycling for over 1600 cycles at a rate of 5 C. By highlightingstrain as a critical parameter, our work provides a strategy for mechano-electrochemicalcoupling in lithium metal anodes for high-rate, high-energy-densitybatteries.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"20 41","pages":"27762–27773"},"PeriodicalIF":17.3,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088335","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}

引用次数: 0

Ultrathin Protein Films Create Living Catalytic Interfaces on Microbial Cells 超薄蛋白膜在微生物细胞上创造活的催化界面

IF 17.3 1区材料科学

ACS Nano Pub Date : 2026-10-20 Epub Date: 2026-10-09 DOI: 10.1021/acsnano.6c12754

Mindi Ming, Menglin Xiao, Cheng Xu, Gangfeng Tang, Jing Ren, Bianliang Miao, Jinrong Yao, Xin Chen, Zhengzhong Shao, Shengjie Ling

{"title":"Ultrathin Protein Films Create Living Catalytic Interfaces on Microbial Cells","authors":"Mindi Ming, Menglin Xiao, Cheng Xu, Gangfeng Tang, Jing Ren, Bianliang Miao, Jinrong Yao, Xin Chen, Zhengzhong Shao, Shengjie Ling","doi":"10.1021/acsnano.6c12754","DOIUrl":"10.1021/acsnano.6c12754","url":null,"abstract":"Spatial organization underpins efficient multistep catalysisinnature, yet recreating such organization on living cell surfaces usingmild, enzyme-compatible and catalytically functional materials remainschallenging. Here we report an l-cysteine-triggered silkfibroin/lysozyme ultrathin film (SLF) that assembles directly on livingmicrobial cells as a catalytic surface layer. SLF forms continuousnanoscale coatings on Saccharomyces cerevisiae, Gluconobacter oxydans and Escherichia coli Nissle 1917. Spectroscopic and structuralanalyses show that film formation proceeds through electrostatic complexation,restricted conformational rearrangement, increased hydrophobic exposure,β-sheet-rich ordering and network formation, rather than simpledeposition. The coating maintains cell viability, enhances stresstolerance and provides size-selective permeability for small-moleculetransport. SLF also incorporates exogenous enzymes efficiently duringassembly. As a proof of concept, ω-transaminase-integrated SLFon G. oxydans couples host glyceroloxidation with surface transamination, enabling one-pot conversionof glycerol to serinol with a titer of 2.7 g L–1 within 12 h, up to 37-fold higher than a stepwise process. Thiswork establishes ultrathin protein films as living catalytic interfacesfor single-cell biocatalyst design and cascade biomanufacturing.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"20 41","pages":"27949–27959"},"PeriodicalIF":17.3,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151154","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}

引用次数: 0

Elucidating Polymer–Cathode Interfacial Interactions in Pyrolytic Pretreatment of Spent Lithium-Ion Batteries 废锂离子电池热解预处理中聚合物-阴极界面相互作用的研究

IF 17.3 1区材料科学

ACS Nano Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acsnano.6c15783

Yuanyuan Zhong, He Zhao, Jingtian Zou, Guihui Yu, Pengfei Li, Wanjing Yu, Xiaoming Yuan, Xiaowei Wang, Jiafeng Zhang, Shubin Wang, Ji Liang

{"title":"Elucidating Polymer–Cathode Interfacial Interactions in Pyrolytic Pretreatment of Spent Lithium-Ion Batteries","authors":"Yuanyuan Zhong, He Zhao, Jingtian Zou, Guihui Yu, Pengfei Li, Wanjing Yu, Xiaoming Yuan, Xiaowei Wang, Jiafeng Zhang, Shubin Wang, Ji Liang","doi":"10.1021/acsnano.6c15783","DOIUrl":"10.1021/acsnano.6c15783","url":null,"abstract":"Pyrolysishas been widely employed as a pretreatment strategy toremove organic components from spent lithium-ion batteries, whichis traditionally considered to have minimal influence on subsequentmetal recovery. By investigating the synergistic pyrolysis behaviorof organic composites with spent lithium nickel cobalt manganese oxide(NCM) cathode materials, it is found that the carbonaceous residuesformed during pyrolysis can significantly impact the microstructureand interfacial chemistry of the cathode material and substantiallyhinder the lithium migration during subsequent low-temperature roastingrecovery. It is demonstrated that the functional groups released fromorganic matter selectively adsorb on the cathode surface under thermalconditions, altering the thermal decomposition pathways of organiccomponents, including poly(vinylidene fluoride) (PVDF) and the separator,and impeding their complete volatilization. This interfacial interactionbetween PVDF/separator and cathode active materials promotes the activationand release of lattice oxygen, which further interacts with the partiallydecomposed carbonaceous species and forms oxygen-rich carbonaceouscomposites. These migrate into the particle interior and form dense,conformal coatings along the grain boundaries, yielding a physicalbarrier that obstructs lithium diffusion. During sulfur-assisted roastingfor selective lithium extraction from ternary black mass, this interfacialarchitecture significantly suppresses lithium release, reducing extractionefficiencies to below 80%. In this case, enhancing the oxygen partialpressure facilitates complete oxidation of the carbonaceous species,effectively removing interfacial barriers and restoring the lithiumleaching efficiency to 96.88%. This work underscores the criticalinfluence of pyrolytic pretreatment on the efficiency of pyrometallurgicalrecycling and suggests reconsideration of its presumed inertness.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"20 41","pages":"27996–28007"},"PeriodicalIF":17.3,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151250","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}

引用次数: 0

In Situ Directional Growth of 2D/3D Perovskite Hetero-Crystals for Highly Sensitive and Stable X-ray Imaging 用于高灵敏度和稳定x射线成像的二维/三维钙钛矿异质晶体的原位定向生长

IF 17.3 1区材料科学

ACS Nano Pub Date : 2026-10-20 Epub Date: 2026-10-05 DOI: 10.1021/acsnano.6c12247

Yue Shen, Xinmei Liu, Kui Zhao, Zhongbin Wu

{"title":"In Situ Directional Growth of 2D/3D Perovskite Hetero-Crystals for Highly Sensitive and Stable X-ray Imaging","authors":"Yue Shen, Xinmei Liu, Kui Zhao, Zhongbin Wu","doi":"10.1021/acsnano.6c12247","DOIUrl":"10.1021/acsnano.6c12247","url":null,"abstract":"Theperformance of perovskite X-ray detectors is limited by thestability-sensitivity trade-off. Although 2D/3D heterostructures providea promising route, fabricating single-crystalline interfaces withminimal defects remains challenging. Here, we develop a seed-mediatedin situ directional epitaxy strategy to grow large-area, oriented(PEA)2PbBr4/MAPbBr3 heterocrystals(HE-PPB-MPB) with highly sharp interfaces. Soft lattice matching combinedwith a patterned PDMS stamp guides van der Waals epitaxy of a uniform2D layer on 3D perovskite, suppressing interfacial defects and randomnucleation. The heterocrystals show an ultralow trap density of 3.02× 109 cm–3 and anisotropic chargetransport, achieving a mobility-lifetime product of 8.94 × 10–3 cm2 V–1 and resistivityof 4.58 × 109 Ω cm along [100]. Configured asan asymmetric p–i–n photodiode, the detector attainsa high sensitivity of 21,654 μC Gyair–1 cm–2 and an ultralow dark-current drift of 2.28× 10–4 pA cm–1 s–1 V–1─two orders lower than conventional3D devices. It also delivers a low detection limit of 26.7 nGyair s–1, withstands 0.408 Gyair without degradation, and enables high-resolution low-dose X-rayimaging. This work establishes a potentially generalized crystal-growthparadigm for advanced radiation sensing.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"20 41","pages":"27908–27919"},"PeriodicalIF":17.3,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088338","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}

引用次数: 0

Frozen Epitaxial Strain in Complex Oxide Freestanding Membranes 复合氧化物悬空膜中的冷冻外延应变

IF 17.3 1区材料科学

ACS Nano Pub Date : 2026-10-20 Epub Date: 2026-10-05 DOI: 10.1021/acsnano.6c08965

Paul Lenharth, Yuchuan Yao, Shihao Tu, Pratap Pal, Varun Nitin Mapara, Ruiqi Sun, Wuzhang Fang, Peyton Burden, Tula R. Paudel, Jason Kawasaki, Uwe Bergmann, Hua Zhou, Yuan Ping, Chang-Beom Eom

{"title":"Frozen Epitaxial Strain in Complex Oxide Freestanding Membranes","authors":"Paul Lenharth, Yuchuan Yao, Shihao Tu, Pratap Pal, Varun Nitin Mapara, Ruiqi Sun, Wuzhang Fang, Peyton Burden, Tula R. Paudel, Jason Kawasaki, Uwe Bergmann, Hua Zhou, Yuan Ping, Chang-Beom Eom","doi":"10.1021/acsnano.6c08965","DOIUrl":"10.1021/acsnano.6c08965","url":null,"abstract":"Transition metalcomplex oxides exhibit a diverse array of emergentphysical properties engineered through epitaxial strain. However,the interpretation of strain-driven phenomena is often obscured bystructural modifications─particularly under in-plane tension─whichcan trigger unexpected departures from bulk behavior. Here, we reportthe observation of “frozen epitaxial strain” in complexoxide heterostructures, where epitaxial tensile strain induces a unit-cellvolume expansion that remains locked even after complete substraterelease. Using synchrotron X-ray diffraction, we quantify this irreversiblestructural response, demonstrating that the lattice fails to recoverits bulk-like dimensions in the freestanding state. X-ray photoelectronspectroscopy and first-principles calculations reveal that this expansionis stabilized by a high density of tensile strain-promoted oxygenvacancies. These findings establish a fundamental link between epitaxialtension, defect chemistry, and structural “memory,”providing critical design rules for the controlled fabrication offunctional freestanding membranes and strain-engineered oxide electronics.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"20 41","pages":"27728–27737"},"PeriodicalIF":17.3,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149088339","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}

引用次数: 0

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