Nanomaterials最新文献

{"title":"Correction: Khalaj-Hedayati et al. Identification and In Silico Characterization of a Conserved Peptide on Influenza Hemagglutinin Protein: A New Potential Antigen for Universal Influenza Vaccine Development. <i>Nanomaterials</i> 2023, <i>13</i>, 2796.","authors":"Atin Khalaj-Hedayati, Caroline Lin Lin Chua, Peter Smooker, Seyedehmaryam Moosavi, Otilia Manta, Mohamed H Helal, Mohamed M Ibrahim, Zeinhom M El-Bahy, Ganden Supriyanto, Khai Wooi Lee","doi":"10.3390/nano16191272","DOIUrl":"10.3390/nano16191272","url":null,"abstract":"<p><p>In the original publication [...].</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666803/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149182050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"PEDOT:PSS-Based OECT Common-Source Amplifiers for Electrophysiological Signal Amplification.","authors":"Kun Xu, Weiming Luo, Naichen Zhang, Yixin Cao, Xiaolei Li, Yujing Zhang, Yunqing Tang","doi":"10.3390/nano16191274","DOIUrl":"10.3390/nano16191274","url":null,"abstract":"<p><p>Stable amplification of weak electrophysiological signals is important for low-voltage bioelectronic interfaces, but the gain and waveform fidelity of organic electrochemical transistor (OECT)-based amplifiers are strongly influenced by device characteristics and bias conditions. Herein, we develop a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) vertical organic electrochemical transistor (vOECT) common-source amplifier using an integrated solid-state electrolyte and investigate its bias-dependent amplification behavior. The fabricated vOECTs exhibits typical p-type depletion-mode operation, effective gate-controlled current modulation, and a maximum transconductance of 22 mS. Transient measurements show reversible current switching with response time constants of 0.909 and 0.635 ms, while repeated gate-voltage modulation over approximately 1000 s confirms stable cycling behavior. Based on the measured transfer and output characteristics, a common-source amplifier model is constructed to analyze the relationship between gate bias, bias resistance, output swing, and voltage gain. By optimizing the voltage-divider bias network, the amplifier achieves a voltage gain of approximately 3.374. The optimized circuit amplifies sinusoidal signals from 1 to 100 Hz and simulated ECG, EEG, and EOG waveforms while preserving their main temporal features and producing the expected phase-inverted output. Distortion and frequency-response analyses further show a 1% total harmonic distortion point at an input peak amplitude of 113 mV and a -3 dB cut-off frequency of 625 Hz. These results demonstrate the importance of bias optimization for achieving stable low-frequency voltage amplification in PEDOT:PSS vOECT common-source amplifiers.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666998/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149182107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Leaching, Acute and Chronic Toxicity of Nano-ZnO Incorporated into Photocatalytic Concrete for Pavement Applications Toward <i>Daphnia magna</i>.","authors":"Fernanda Facin, João Victor Staub de Melo, William Gerson Matias","doi":"10.3390/nano16191265","DOIUrl":"10.3390/nano16191265","url":null,"abstract":"<p><p>Urban air pollution has driven the use of photocatalytic concrete for pavement applications, in which nano-ZnO has emerged as an alternative to nano-TiO₂. However, its higher solubility raises concerns regarding the release of Zn²⁺ into the aquatic environment. In this context, this study evaluated whether the incorporation of nano-ZnO, at a proportion of 9% relative to the mass of Portland cement, increases the toxicity of pavement concrete leachates toward <i>D. magna</i>, compared to conventional concrete. The nano-ZnO powder was physicochemically characterized (XRD, EDXRF, TEM, FTIR, TG/DTG, and colloidal behavior), and the leachates from the conventional and 9% nano-ZnO concretes, obtained by an accelerated TCLP-based leaching of crushed concrete, were characterized by ICP-MS and FTIR. Acute (48 h) and chronic (21 days) toxicity were evaluated for the nano-ZnO powder, for the reference leachate (conventional concrete; data from our previous study), and for the leachate from the nano-modified concrete. ICP-MS indicated that at most ~0.07-0.08% of the total incorporated zinc was leached, and no Zn-O band was detected by FTIR in the freeze-dried leachates, which is consistent with, although it does not prove, the retention of ZnO in the cementitious matrix. In the acute assay, the EC50, 48 h of the nano-modified leachate (10.5% <i>v</i>/<i>v</i> of the concentrated extract) did not differ significantly from that of the reference leachate (10.4% <i>v</i>/<i>v</i>; EC50 ratio 1.01, 95% CI 0.87-1.17) and was not attributable to dissolved zinc alone. In a 21-day assay based on OECD TG 211, the nano-modified leachate caused no adverse effect on longevity, size, reproduction, or age at first brood up to the highest concentration tested, whereas the reference leachate caused a slight reduction in size. Overall, nano-ZnO incorporation did not produce additional toxicity toward <i>D. magna</i> under the tested conditions.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666886/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149183218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"The Fundamentals of Halide Perovskite Instability: CsPbBr₃ as a Model System.","authors":"Neena Prasad, Achiad Goldreich, Alen Sam Thomas, Philip Nathaniel Immanuel, Lena Yadgarov","doi":"10.3390/nano16191264","DOIUrl":"10.3390/nano16191264","url":null,"abstract":"<p><p>Halide perovskites (HPs) exhibit outstanding optoelectronic properties, making them highly attractive for advanced photonic and electronic applications. Among them, cesium lead bromide (CsPbBr₃) exhibits high photoluminescence efficiency, narrow emission linewidths, and excellent color purity, making it suitable for light-emitting diodes, photodetectors, scintillators, and lasers. However, its practical application remains limited by intrinsic instability and environmental stressors such as moisture, heat, oxygen, and illumination. This review discusses the fundamental degradation mechanisms in HPs, using CsPbBr₃ as a representative system, primarily in nanocrystals (NCs), while also considering thin-film and bulk forms. Intrinsic instability arises from the soft ionic lattice, a relatively low tolerance factor, and anharmonic lattice dynamics, which promote defect formation, ion migration, and structural distortion. Low activation energies for ionic transport enable migration of halide (Br^-) and A-site (Cs⁺) ions, leading to defect accumulation, non-radiative recombination, and phase instability. In NCs, surface-dominated effects further accelerate degradation, driven by high defect densities and ligand desorption. Extrinsic factors promote degradation through hydrolysis, photoinduced defect formation, radical-driven reactions, and transformation into secondary phases. These processes can be intensified when multiple environmental stressors act simultaneously, reducing operational stability. These processes form a coupled, condition-dependent degradation network. Their interactions and relative contributions depend on the material form and environmental or operational conditions. Overall, this review highlights the interconnected roles of lattice dynamics, defect formation, ionic transport, and environmental interactions in governing the instability of CsPbBr₃-based HPs.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149183084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Marine Macroalga-Mediated Green Synthesis of Silver Nanoparticles Using <i>Ulva reticulata</i> for Sunlight-Assisted Photocatalytic Degradation of Synthetic Dyes.","authors":"Ganesan Ezhumalai, Harishna A Ajay, Golap Chandra Singha, Sathiyaraj Srinivasan, Rajkumar Renganathan","doi":"10.3390/nano16191261","DOIUrl":"10.3390/nano16191261","url":null,"abstract":"<p><p>Marine macroalgae provide renewable biological resources for the eco-friendly synthesis of functional nanomaterials for environmental remediation. This study synthesized silver nanoparticles (AgNPs) using an aqueous extract of the green macroalga <i>Ulva reticulata</i> and evaluated their sunlight-driven photocatalytic activity against synthetic dyes. Five seaweed species were screened for AgNP synthesis, and <i>U. reticulata</i> was selected based on visible color change and UV-visible spectral response. The effects of light conditions, incubation time, AgNO₃-to-extract ratio, temperature, pH, and AgNO₃ concentration were optimized. Maximum AgNP synthesis was achieved under light conditions using a 7:3 ratio of AgNO₃ solution to algal extract, 1 mM AgNO₃, pH 8, and incubation at 60 °C for 24 h. UV-visible spectroscopy showed a characteristic surface plasmon resonance peak at approximately 440 nm. FTIR analysis indicated that algal functional groups contributed to silver ion reduction and nanoparticle stabilization. SEM analysis showed predominantly spherical AgNPs with an average size of 3.1 nm, while EDS analysis confirmed the presence of elemental silver. The biosynthesized AgNPs degraded methylene blue, methyl orange, aniline blue, and rose bengal under sunlight, achieving 60-90% decolorization after 24 h. These findings support <i>U. reticulata</i> as a promising marine biological platform for sustainable AgNP synthesis and dye-contaminated wastewater treatment.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13667079/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149183221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"RETRACTED: Tishkevich et al. Magnetic Properties of the Densely Packed Ultra-Long Ni Nanowires Encapsulated in Alumina Membrane. <i>Nanomaterials</i> 2021, <i>11</i>, 1775.","authors":"Daria Tishkevich, Alla Vorobjova, Dmitry Shimanovich, Egor Kaniukov, Artem Kozlovskiy, Maxim Zdorovets, Denis Vinnik, Andrei Turutin, Ilya Kubasov, Alexander Kislyuk, Mengge Dong, M I Sayyed, Tatiana Zubar, Alex Trukhanov","doi":"10.3390/nano16191262","DOIUrl":"10.3390/nano16191262","url":null,"abstract":"<p><p>The journal retracts the article \"Magnetic Properties of the Densely Packed Ultra-Long Ni Nanowires Encapsulated in Alumina Membrane\" [...].</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13643887/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149128002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Influence of Shelf-Aging on Resistive Switching Characteristics of Sol-Gel-Processed ZnO and Al-Doped ZnO Structures.","authors":"Dongjin Moon, Jaehoon Kim","doi":"10.3390/nano16191263","DOIUrl":"10.3390/nano16191263","url":null,"abstract":"<p><p>Sol-gel-processed zinc oxide (ZnO) is indispensable in various optoelectronic applications, such as quantum dot light-emitting diodes (QLEDs), due to its high electron transport capability and adjustable oxygen vacancy characteristics. However, its commercialization has been delayed by defect-related issues and a high sensitivity to fabrication conditions. ZnO exhibits complex aging behaviors, notably 'shelf-aging,' where device properties change unpredictably over time even without external stimuli. Recent studies suggest that this shelf-aging in QLEDs might relate to the resistive switching (RS) behavior in ZnO, affecting the current conduction mechanism through external bias and internal oxygen dynamics. Despite its significance, systematic studies on the shelf-aging effects in ZnO-based RS structures have been lacking. In this study, we fabricate RS devices using sol-gel-processed ZnO and aluminum-doped ZnO (AZO) as dielectric layers, employing indium tin oxide (ITO) and aluminum (Al) as electrodes-materials commonly utilized in QLEDs. Notably, the <i>I</i>_on/<i>I</i>_off ratio increased during the initial storage period, reaching the highest measured values after two days for ZnO and three days for AZO, followed by a decrease at later storage times. Further electrical measurements revealed storage-associated changes, while qualitative time-of-flight secondary ion mass spectrometry (TOF-SIMS) profiles showed differences between pristine and archived aged specimens. These observations suggest possible interfacial or defect-related contributions. Overall, this study documents electrical evolution in simplified oxide/Al-containing RS structures during ambient storage with repeated measurements and generates hypotheses for future investigation into complete QLEDs.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666779/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149183272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Self-Consistent Study of the Electronic Properties of a Single Exciton in Nanoscopic CdSe Quantum Dots.","authors":"J A Gil-Corrales, C A Dagua-Conda, J A Vinasco, J Sierra-Ortega, Gene Elizabeth Escorcia-Salas, A L Morales, D B Hayrapetyan, C A Duque","doi":"10.3390/nano16191266","DOIUrl":"10.3390/nano16191266","url":null,"abstract":"<p><p>The electronic and excitonic properties of a single exciton confined in nanoscopic CdSe quantum dots with different geometries are investigated using a self-consistent Schrödinger-Poisson approach within the effective mass and Hartree approximations. Box, cylindrical, ellipsoidal, and square-based pyramidal quantum dots are considered, keeping their volume and cross-sectional area equal to isolate geometrical effects. The results show that increasing either the longitudinal (Lz) or transverse (<i>L</i>) dimension reduces the carrier confinement energies and produces a redshift of the exciton transition, with a stronger effect when the transverse dimensions are increased. The electron-hole Coulomb interaction decreases as the carrier wave functions become more spatially extended and remains strongly dependent on the quantum-dot geometry. Notably, the pyramidal structure exhibits the most pronounced geometry-dependent behavior, while the cylinder and ellipsoid show similar exciton transition energies because the energy associated with the strong confinement in the xy plane dominates over that associated with the weaker confinement along the <i>z</i> direction as the longitudinal parameter is increased. Similarly, the box and cylinder exhibit comparable exciton transition energies as the transverse parameter is increased. These results demonstrate that the shape and aspect ratio of nanoscopic quantum dots provide effective parameters for controlling their excitonic and optical properties.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13667246/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149182943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Production of Bioethanol from <i>Artocarpus Integer</i> (Chempedak) Peel: An Approach Towards Clean Technology.","authors":"Yan Shan Ng, Asheild Clint Choisy, Kae Bin Lim, Zavier Ik Yang Jun, Benedict Raphael Soesanto, Sachin Sharma Ashok Kumar","doi":"10.3390/nano16191259","DOIUrl":"10.3390/nano16191259","url":null,"abstract":"<p><p>This research focuses on a sustainable way to reduce waste and generate renewable energy by converting Chempedak bio-waste into bioethanol. It undergoes several phases: feedstock collection and pretreatment (mechanical, acid and alkaline pretreatment), hydrolysis, fermentation, and distillation. The main goal of this project is to yield ethanol from 300 g Chempedak peel waste by using a functioning and cost-effective way. When processing the project, the distillation process was then changed to ethanol evaporation which used a rotary evaporator to extract the ethanol, as it is more effective. The final product for the ethanol yielded 73% for 41 mL. This work provided solutions to society to reduce waste, promote more sustainable energy solutions, and increase economic growth in industries by finding more sustainable options.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666693/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149182519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Bubble-Point Pressure Deviations and Metastable Nucleation in Nanoconfined CO₂-Shale Oil Systems: Effects of Temperature, Composition, Gas-Oil Ratio, and Pore-Scale Coupling.","authors":"Dongyan Qi, Jiawei Li, Qiang Liu, Shuang Wang, Siyuan Cui, Yue Lang, Jiayi Zhao, Xiaozhe Liang, Junjie Zhong","doi":"10.3390/nano16191260","DOIUrl":"10.3390/nano16191260","url":null,"abstract":"<p><p>Bubble-point behavior of shale oil under nanoconfinement is critical for understanding phase evolution during CO₂-enhanced shale-oil recovery. In this study, visual micro/nanofluidic PVT experiments were conducted to systematically investigate bubble-point pressure deviations of pentane-CO₂, hexadecane-CO₂, pentane/decane/hexadecane-CO₂, and shale oil-CO₂ systems. Measurements were performed at gas-oil ratios of 130 and 260 and temperatures of 65-125 °C using a 10 nm single-scale pore model and a coupled 10 μm-10 nm pore-network model. Experimental results were compared with theoretical predictions from a confinement-modified Peng-Robinson equation of state incorporating capillary pressure, surface adsorption, and critical-property shifts. Furthermore, a metastable nucleation limit was introduced to describe the experimentally observed phase-transition pressure below the equilibrium bubble-point boundary. Pronounced downward deviations toward the metastable region were observed in isolated 10 nm pores. For the pentane-CO₂ system at 65 °C and GOR = 130, the experimentally observed phase-transition pressure was approximately 3.5 MPa, compared with an equilibrium prediction of 4.3 MPa, corresponding to a relative deviation of 18.35%. The deviation decreased as temperature approached the critical region and was reduced at higher GOR. For example, at GOR = 260, the deviation of the hexadecane-CO₂ system decreased from 40.63% at 65 °C to 10.01% at 125 °C. Fluid composition also strongly affected confinement sensitivity, with heavier hydrocarbon systems exhibiting stronger shifts toward metastable behavior. In contrast, bubble-point pressures in the coupled 10 μm-10 nm network remained close to the equilibrium predictions of the micrometer-scale pores and deviated significantly from the metastable limit. For the shale oil-CO₂ system at 65 °C and GOR = 130, the relative deviation decreased from 29.77% in the isolated 10 nm pore model to only 2.43% in the coupled 10 μm-10 nm network. These results demonstrate that nanoconfined bubble-point behavior is governed by the coupled effects of thermodynamic conditions, fluid composition, metastability, and pore-scale connectivity.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"16 19","pages":""},"PeriodicalIF":4.8,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13667126/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149183280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}