Applied Surface Science Advances最新文献

{"title":"Manufacturing and properties characterization of Ti patterned coatings for water electrolyzers by CSAM","authors":"Andrea Garfias ,&nbsp;María Sarret ,&nbsp;Javier Sánchez ,&nbsp;Irene G. Cano ,&nbsp;Vicente Albaladejo-Fuentes ,&nbsp;Teresa Andreu","doi":"10.1016/j.apsadv.2024.100649","DOIUrl":"10.1016/j.apsadv.2024.100649","url":null,"abstract":"<div><div>This work investigates the microstructure and manufacturing control of the masked Cold Spray Additive Manufacturing (CSAM) strategy for producing of new bipolar plates (BPPs) for Proton Exchange Membrane (PEM) electrolyzers, using low-cost, lightweight, and machinable materials. CSAM is a solid-state process capable of fabricating 3D patterned parts based on a bottom-up approach using masks with a desired pattern. This study focuses on the dimensional and microstructural characteristics of pin fins fabricated with spherical (Ti-S) and irregular (Ti-I) Ti powders using the masked CSAM technology. Additionally, the performance of both Ti parts for its application in PEM electrolyzers was evaluated in terms of corrosion resistance and interfacial contact resistance (ICR). The results demonstrated that the masked CSAM technology allowed precise control and customization of the dimensions of the 3D-printed pin fins, obtaining porosity values of 6 ± 1 % for Ti-S and 4 ± 1 % for Ti-I. The evaluation of the corrosion resistance of the CSAM Ti patterned parts showed that for both Ti-S and Ti-I powders a stable oxide film at the typical operation potential (1.8 V vs Ag/AgCl) of a PEM water electrolyzer was formed without signs of pitting corrosion. Finally, at a compaction pressure of 150 N/cm² ICR values of 42 ± 19, 40 ± 13, and 24 ± 7 mΩ·cm² were obtained for Ti-I, Ti-S, and standard Ti Bulk, respectively. The results suggest than the masked CSAM technology shows great potential for the fabrication of Ti BPPs.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100649"},"PeriodicalIF":7.5,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the role of edges in surface functionalization and stability of plasma-modified carbon materials: Experimental and DFT insights","authors":"Divya Kumar,&nbsp;Marek Białoruski,&nbsp;Witold Piskorz,&nbsp;Andrzej Kotarba","doi":"10.1016/j.apsadv.2024.100648","DOIUrl":"10.1016/j.apsadv.2024.100648","url":null,"abstract":"<div><div>Effective surface functionalization of carbon nanomaterials plays a crucial role in various applications. We investigated the impact of edges on surface functionalization and stability of oxygen-modified carbon materials using a combination of experimental techniques and Density Functional Theory (DFT) insights. Graphenic paper, highly oriented pyrolytic graphite (HOPG), and graphenic flakes were employed as model systems, with oxygen plasma treatment (generator power 100 W, oxygen pressure 0.2 mbar, exposure time 6 – 300 s) serving as the modification method. Surface morphology and chemical composition were characterized using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The results revealed the introduction of oxygen functional groups on the investigated carbon surfaces (up to 20 at % by XPS) whereas; the structural integrity of the materials remained intact upon plasma modification (SEM, Raman). Work function was used as a sensitive parameter for monitoring the surface changes (increase by ∼1.4 eV, 1.3 eV, and 1 eV for graphenic paper, HOPG, and graphenic flakes, respectively) while time-dependent measurements revealed distinct kinetic processes governing the decay of functionalization, highlighting the role of surface defects in post-plasma processes. DFT calculations provided molecular-level insights into the surface processes, elucidating the mechanisms underlying the diffusion of hydroxyls, their recombination, and water desorption. Since the calculated activation barrier for recombination on basal graphenic planes (∼1.0 eV) and edges (∼5.5 eV) are distinctly different, it can be thus concluded that the persistent functionalization is due to the surface edges. Our findings contribute to a deeper understanding of surface modification processes of carbon materials and offer rationales for the design of advanced functional nanomaterials with tailored surface properties.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100648"},"PeriodicalIF":7.5,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multidimensional woodchips-like Mn-metal-organic framework for asymmetric supercapacitor devices","authors":"Uma Shankar Veerasamy ,&nbsp;Narayanamoorthi Eswaran ,&nbsp;Konlayutt Punyawudho ,&nbsp;Yuttana Mona ,&nbsp;Nakorn Tippayawong ,&nbsp;Pana Suttakul ,&nbsp;Ramnarong Wanison","doi":"10.1016/j.apsadv.2024.100650","DOIUrl":"10.1016/j.apsadv.2024.100650","url":null,"abstract":"<div><div>Multidimensional manganese-metal organic frameworks (Mn-MOF) are synthesized using 1,2,4,5-Benzene tetracarboxylic acid (BTTC) at various temperatures (100–160 °C). The Fourier-transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) techniques successfully confirm the formation of Mn-MOF. Among the various temperatures, the Mn-MOF synthesized at 140 °C (Mn-MOF@BTTC-140) is remarkable because it has excellent crystallinity and a unique morphology, i.e., woodchips-like structure. The synthesized Mn-MOF@BTTC materials are used in supercapacitor applications. In comparison to all materials, Mn-MOF@BTTC-140 revealed the maximum specific capacitance (Cs) of 627 F g^-1 @ 1 A g^-1, and it displayed 91 % capacitance retention even after the 6000 cycles at a current density of 10 A g^-1. Furthermore, the supercapacitor device (SD) constructed using carbon nanofibers (CNF) as the negative electrode and Mn-MOF@BTTC-140 as the positive electrode delivered an energy density of 25 W h kg^-1 at a power density of 532 W kg^-1. Ultimately, LED lighting demonstrates that our fabricated materials suit practical applications.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100650"},"PeriodicalIF":7.5,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Designing g-C3N4/NiFe2O4 S-scheme heterojunctions for efficient photocatalytic degradation of Rhodamine B and tetracycline hydrochloride","authors":"Subhasish Mishra ,&nbsp;Lopamudra Acharya ,&nbsp;S. Sharmila ,&nbsp;Kali Sanjay ,&nbsp;Rashmi Acharya","doi":"10.1016/j.apsadv.2024.100647","DOIUrl":"10.1016/j.apsadv.2024.100647","url":null,"abstract":"<div><div>Semiconductor based photocatalysis is considered as an effective and sustainable approach for the efficient treatment of effluents containing organic dyes and pharmaceuticals. Herein, visible light responsive g-C₃N₄/ NiFe₂O₄ (CN/NF) composite photocatalysts were designed by sol-gel auto-combustion assisted calcination method using ethylene glycol (EG) as a chelating agent. Bidentate nature and lower molecular weight of EG favour slow hydrolysis of Ni²⁺ and Fe³⁺ ions followed by formation of homogenous gel phase which under auto-combustion produced NF precursors. Calcination of the mixture of dicyandiamide (DCDA) and predetermined amount of NF precursors at 550 °C for 4 h resulted in the formation of CN/NF nanocomposites in which NF nanoparticles are anchored on thick plates of porous CN. The construction of CN/NF S-scheme heterojunctions was established through XPS studies and scavenging tests. The 10CN/NF nanocomposite exhibited superior photocatalytic Rhodamine B (RhB) degradation efficiency (98.6 %) which is 2.7 and 3.1 folds superior than that of pure NF and CN respectively. Additionally, the photocatalytic performance of 10CN/NF for tetracycline hydrochloride (TCH) degradation was found to be 84.32 %. The degradation efficiency was around 1.75 and 2.6 times higher than that was observed for pristine NF and CN correspondingly. The current study will bring fresh insights into the synthesis of CN/NF heterojunctions with an S-scheme charge transfer channel for the efficient treatment of waste waters containing dyes and antibiotics.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100647"},"PeriodicalIF":7.5,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-Principle Calculations of Interfacial Resistance between Nickel Silicide and Hyperdoped Silicon with N-Type Dopants Arsenic, Phosphorus, Antimony, Selenium and Tellurium","authors":"Changmin Lim ,&nbsp;Shinyeong Park ,&nbsp;Jiwon Chang","doi":"10.1016/j.apsadv.2024.100646","DOIUrl":"10.1016/j.apsadv.2024.100646","url":null,"abstract":"<div><div>The interfacial resistance between NiSi₂ and n-type doped Si was investigated using density functional theory calculations with hybrid functionals. We explored the resistance of Si at different doping concentrations by assigning an effective potential to each Si atom. Then, the valley filtering effect at the NiSi₂/Si interface was estimated by comparing the transmission spectra of NiSi₂ and Si. We also examined the interfacial resistance between NiSi₂ and hyperdoped Si with substitutional n-type dopants, including pnictogen (P, As and Sb) and chalcogen (Se and Te) atoms. Two types of substitutional dopant structures (a single dopant and a dopant dimer) were considered. The formation and binding energies of a single P/Te and a P/Te dimer were investigated to understand the stability in Si. The resistances of Si with a single dopant and with a dopant dimer at high doping concentrations were calculated to show that the resistance as low as ∼ <span><math><mrow><mn>4</mn><mspace></mspace><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>11</mn></mrow></msup><mspace></mspace><mstyle><mi>Ω</mi></mstyle><mo>·</mo><mi>c</mi><msup><mrow><mi>m</mi></mrow><mn>2</mn></msup></mrow></math></span> can be achieved with a single dopant (P, As and Sb). However, at high doping concentration where a dopant dimer forms, a P dimer cannot effectively donate electrons, resulting in high resistance, while a Te dimer can still provide electrons, achieving a resistance of ∼ <span><math><mrow><mn>2</mn><mspace></mspace><mo>×</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>10</mn></mrow></msup><mspace></mspace><mstyle><mi>Ω</mi></mstyle><mo>·</mo><mi>c</mi><msup><mrow><mi>m</mi></mrow><mn>2</mn></msup></mrow></math></span>. Therefore, the chalcogen deep donor atoms (Se and Te) can be effective n-type donors and lower the silicide contact resistance at the interface where Si is extremely highly n-type doped.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100646"},"PeriodicalIF":7.5,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-oxygen vacancies coupling in topotactic (La,Sr)Co3-δ thin films","authors":"Yichen Wu ,&nbsp;Victor Rosendal ,&nbsp;Milica Vasiljevic ,&nbsp;Imran Asghar ,&nbsp;Vincenzo Esposito","doi":"10.1016/j.apsadv.2024.100644","DOIUrl":"10.1016/j.apsadv.2024.100644","url":null,"abstract":"<div><div>Oxygen defect engineering is a widely used approach for tuning physical properties in oxides. Multivalent transition metal oxide La_0.7Sr_0.3CoO_3-δ (LSCO) shows oxygen vacancy-driven metal-to-insulator transition (MIT) due to topotactic phase transition and its high oxygen vacancy tolerance. Here, we introduce strain as a new degree of freedom to study the strain-oxygen vacancy coupling effects and elucidate its impact on the electronic property in oxygen-deficient LSCO epitaxial thin films grown on SrTiO₃ (100) single crystal. By combining the experimental results with density functional theory plus U (DFT+U) calculations, we reveal that 2.1 % <em>in-plane</em> tensile strain can stabilize the insulating state of LSCO with a surprisingly low concentration of oxygen vacancies, &lt;0.5 %. This study reveals that the MIT in LSCO is governed by the combination of oxygen vacancies and strain, offering the potential for additional tuning knob of the material's electronic properties.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100644"},"PeriodicalIF":7.5,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142358740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorine-free superhydrophobic surfaces by atmospheric pressure plasma deposition of silazane-based suspensions","authors":"Camilo Rendon Piedrahita,&nbsp;Kamal Baba,&nbsp;Robert Quintana,&nbsp;Patrick Choquet","doi":"10.1016/j.apsadv.2024.100645","DOIUrl":"10.1016/j.apsadv.2024.100645","url":null,"abstract":"<div><div>Atmospheric plasma is used to deposit superhydrophobic fluorine-free thin films onto a substrate. In this process, a suspension of micron size silica particles in a silazane based precursor is deposited in a single step using a dielectric barrier discharge plasma jet moving above the substrate. Thanks to an optimized configuration between the suspension injection and the plasma jet, the silazane precursor can be polymerized on the substrate surface but also, on silica particles to form additional micro size particles. The experimental parameters for optimal deposition are discussed, with emphasis on those leading to the formation of this dual roughness surface caused by the arrangement of both silica particles and particles generated from the precursor plasma polymerization. The combination of these two different length scales for the roughness leads to a decreased wettability of the coated substrate and a water contact angle larger than 150°.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100645"},"PeriodicalIF":7.5,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142322329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current-voltage plots reveal details of the energy level alignment during photoelectron spectroscopy experiments","authors":"Grzegorz Greczynski","doi":"10.1016/j.apsadv.2024.100643","DOIUrl":"10.1016/j.apsadv.2024.100643","url":null,"abstract":"<div><div>The photoelectron current <span><math><msub><mi>I</mi><mi>s</mi></msub></math></span> emitted from samples exposed to soft X-rays, such as is the case during X-ray photoelectron spectroscopy (XPS) analyses, is dominated by secondary electrons (SE) with energies not exceeding several eVs. Because of that, both the magnitude and the direction of <span><math><msub><mi>I</mi><mi>s</mi></msub></math></span> is highly sensitive to the applied sample bias <span><math><msub><mi>V</mi><mi>s</mi></msub></math></span> with the magnitude of just a few volts. By measuring current-voltage characteristics for a series of samples with different work functions <span><math><msub><mi>ϕ</mi><mrow><mi>S</mi><mi>A</mi></mrow></msub></math></span> a clear correlation between <span><math><msub><mi>ϕ</mi><mrow><mi>S</mi><mi>A</mi></mrow></msub></math></span> and the shape of the <span><math><mrow><msub><mi>I</mi><mi>s</mi></msub><mo>−</mo><msub><mi>V</mi><mi>s</mi></msub></mrow></math></span> curves is demonstrated. While all <span><math><mrow><msub><mi>I</mi><mi>s</mi></msub><mo>−</mo><msub><mi>V</mi><mi>s</mi></msub></mrow></math></span> plots have a characteristic “reversed S” shape, a clear and consistent shift towards positive <span><math><msub><mi>V</mi><mi>s</mi></msub></math></span> values is observed with increasing <span><math><msub><mi>ϕ</mi><mrow><mi>S</mi><mi>A</mi></mrow></msub></math></span>. The effect is explained by variations in the contact potential <span><math><msub><mi>V</mi><mi>c</mi></msub></math></span> established between the sample and the spectrometer. For all samples there is an excellent agreement between the <span><math><msub><mi>V</mi><mi>c</mi></msub></math></span> values (derived by ultraviolet photoelectron spectroscopy from the SE cut-offs) and the critical <span><math><msub><mi>V</mi><mi>s</mi></msub></math></span> value at which the photocurrent begins to drop. Hence, simple to perform current-voltage measurements, provide a unique insight into the details of the energy level alignment between sample and the spectrometer. In particular, the sign and the magnitude of the contact potential as well as relative changes in the sample work function can be determined. The knowledge of these parameters is often essential for correct interpretation of XPS spectra.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100643"},"PeriodicalIF":7.5,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000710/pdfft?md5=e7539ecdd61a3d201d4b16c346018b53&pid=1-s2.0-S2666523924000710-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142314782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of mechanical morphological structural and electrochemical properties of PVD TiAlN coating: A detail experimental and its correlation with an analytical approach using the least square method","authors":"Soham Das ,&nbsp;Soumya Kanti Biswas ,&nbsp;Abhishek Kundu ,&nbsp;Ranjan Ghadai ,&nbsp;Spandan Guha","doi":"10.1016/j.apsadv.2024.100638","DOIUrl":"10.1016/j.apsadv.2024.100638","url":null,"abstract":"<div><p>In this experimental investigation, a Physical Vapor Deposition (PVD) process was employed to deposit TiAlN coating onto a Si substrate. The nitrogen flow rate, bias voltage, and substrate-to-target distance were selected as input parameters, each with three different levels. The design of these input parameters was structured according to Taguchi's L9 Orthogonal Array (OA). Following deposition, the mechanical, microstructural, structural, and electrochemical properties of the TiAlN coating were meticulously characterized and analyzed to discern the influence of the selected parameters on its various properties. Microstructural analysis revealed a homogeneous structure throughout the film. Additionally, the mechanical properties of the film exhibited notable performance under the specified parameters. However, it was observed that no consistent trend could be identified across different properties concerning the applied parameters. To elucidate the complex relationships among these variables, the Least Squares Method (LSM) regression analysis technique was employed. This analytical approach facilitated the establishment of correlations among the diverse parameters, enhancing the understanding of their collective impact on the TiAlN coating properties. The understanding of analytical results will be useful for predicting the values between the two extremities to measure the performance parameters where the experimental results are not available.</p></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100638"},"PeriodicalIF":7.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000667/pdfft?md5=a9cba5c63541262efe72510492925f2e&pid=1-s2.0-S2666523924000667-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"As-deposited and dewetted Cu layers on plasma treated glass: Adhesion study and its effect on biological response","authors":"Alena Reznickova ,&nbsp;Veronika Lacmanova ,&nbsp;Marie Hubalek Kalbacova ,&nbsp;Petr Hausild ,&nbsp;Jiri Nohava ,&nbsp;Zdenka Kolska ,&nbsp;Anna Kutova ,&nbsp;Petr Slepicka","doi":"10.1016/j.apsadv.2024.100639","DOIUrl":"10.1016/j.apsadv.2024.100639","url":null,"abstract":"<div><p>Improving the adhesion of nanosized copper films to a glass substrate is vital for their application in electronics and medicine, as it enhances their overall reliability. For this purpose, we employed Ar plasma etching (240 s) and magnetron sputtering to create copper layers on a glass substrate. Furthermore, we investigated the effect of subsequent solid state dewetting (at 300 °C) of Cu nanolayers on the interface stability. Increasing the sputtering time resulted in elevated copper concentration, UV-Vis absorption, conductivity, and surface roughness. The as-deposited and dewetted samples exhibited very good wettability with water contact angles below 60°. Importantly, plasma treatment improved the adhesion of the Cu layers to the glass. Subsequent dewetting accelerated surface diffusion and the oxidation of Cu atoms, causing structural and morphological changes. The presence of CuO after dewetting caused loss of the surface plasmon resonance (SPR) band in the UV-Vis spectrum and a decrease in sample conductivity due to the transformation of the copper layer from a metal to an oxide. Biological testing revealed a more pronounced bactericidal effect for the as-deposited Cu layer against <em>E. coli</em> and <em>S. epidermidis</em> on contrary to dewetted samples. The similar cytotoxic trend was observed for human dermal fibroblasts and hepatocytes. Nonetheless, biological testing confirmed better cell adhesion on dewetted Cu layers compared to the as-deposited ones. Therefore, our copper nanostructured samples could find application as antibacterial coatings of biomedical devices.</p></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"24 ","pages":"Article 100639"},"PeriodicalIF":7.5,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666523924000679/pdfft?md5=2695b3f3616979de16ee15129a68ad7b&pid=1-s2.0-S2666523924000679-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142242631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}