Physica status solidi (A): Applied research最新文献

Effects of BiFeO3 thickness on the write‐once‐read‐many‐times resistive switching behavior of Pt/BiFeO3/LaNiO3 heterostructure BiFeO3厚度对Pt/BiFeO3/LaNiO3异质结构“写-一次-读-多次”电阻开关行为的影响

Physica status solidi (A): Applied research Pub Date : 2023-09-08 DOI: 10.1002/pssa.202300563

Yajun Fu, Wei Tang, Jin Wang, Linhong Cao

引用次数: 0

Laser treatment of dental implants towards an optimized osseointegration: evaluation via TM‐AFM and SEM 激光治疗牙种植体实现最佳骨整合:通过TM - AFM和SEM进行评估

Physica status solidi (A): Applied research Pub Date : 2023-09-07 DOI: 10.1002/pssa.202200605

Wiktor Luczak, Ciril Reiner-Rozman, M. Muck, Johannes Heitz, G. Mitov, Florian Pfaffeneder, C. von See, A. Hassel, Christoph Kleber

{"title":"Laser treatment of dental implants towards an optimized osseointegration: evaluation via TM‐AFM and SEM","authors":"Wiktor Luczak, Ciril Reiner-Rozman, M. Muck, Johannes Heitz, G. Mitov, Florian Pfaffeneder, C. von See, A. Hassel, Christoph Kleber","doi":"10.1002/pssa.202200605","DOIUrl":"https://doi.org/10.1002/pssa.202200605","url":null,"abstract":"Surface modifications of dental implants play a crucial role for material stability, durability, and patient contentment; hence optimization of the commonly used techniques can have significant impact. Surface properties affect the osseointegration of implants; however, the surface for the optimal osseointegration is still being researched. Herein, the surface roughness and topography of dental implant screws after polishing, sandblasting, and laser treatment via tapping‐mode atomic force microscopy are investigated. The measurements are performed at the implants’ shank, crest, and root sites and evaluated for surface roughness, kurtosis, and skew values. Laser‐treated and sandblasted samples have a significantly higher roughness compared to the machined sample. The roughness at the root of the samples is higher in case of the laser‐treated and machined samples, while lower for the sandblasted implant. It is found that laser treatment leads to a roughness lower than that of sandblasted dental screws but significantly higher than that of mechanically polished implants. Differences in the roughness at different topological sites show the need for more precise treatment of implants in order to optimize the roughness.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"308 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79689305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An analytical tooth model based on SPR chips coated with hydroxyapatite used for investigation of the acquired dental pellicle 基于羟基磷灰石包覆SPR芯片的牙齿分析模型用于研究获得性牙膜

Physica status solidi (A): Applied research Pub Date : 2023-09-05 DOI: 10.1002/pssa.202300146

D. Vornicescu, V. Penta, Michael Keusgen

{"title":"An analytical tooth model based on SPR chips coated with hydroxyapatite used for investigation of the acquired dental pellicle","authors":"D. Vornicescu, V. Penta, Michael Keusgen","doi":"10.1002/pssa.202300146","DOIUrl":"https://doi.org/10.1002/pssa.202300146","url":null,"abstract":"One of the main targets in modern dentistry is the prevention of caries. Not only daily nutrition plays an important role, but also the so called “pellicle” on the outer surfaced of teeth, which is mainly formed by saliva proteins. Moreover, numerous bacteria are part of this pellicle, which might cause caries by acidic metabolites. In the here presented study, a method for electrophoretic deposition (EPD) of hydroxyapatite (HAP) nanoparticles on gold surfaces, suitable for Surface Plasmon Resonance (SPR) measurements has been developed. An “artificial tooth” has been created and loaded by natural saliva in different concentrations (to form a natural pellicle), while the influence of an environment with different pH values has been studied. It could be demonstrated that even slight acid solutions damage the pellicle significantly within seconds, exposing the HAP to acidic degradation, which would lead to caries in the human oral cavities. This model allows to study pellicle formation as well as degradation in real time. As a practical example, the influence of beverages on the pellicle could be demonstrated.This article is protected by copyright. All rights reserved.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81875354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of the Effect of ZnO Film Thickness Over the Gas Sensor Developed for Sensing Carbon Monoxide ZnO薄膜厚度对一氧化碳气体传感器影响的研究

Physica status solidi (A): Applied research Pub Date : 2023-09-02 DOI: 10.1002/pssa.202300047

J. Agrawal, Mayoorika Shukla, Vipul Singh

引用次数: 0

Constitutive modeling of hot deformation behaviors and processing maps of Mg‐4.83Gd‐2.36Nd‐0.21Zr alloy Mg‐4.83Gd‐2.36Nd‐0.21Zr合金热变形行为的本构建模和加工图

Physica status solidi (A): Applied research Pub Date : 2023-09-02 DOI: 10.1002/pssa.202300434

Chunhui Wang, Guangyu Yang, S. Ouyang, He Qin, Zhiyong Kan, Wanqi Jie

{"title":"Constitutive modeling of hot deformation behaviors and processing maps of Mg‐4.83Gd‐2.36Nd‐0.21Zr alloy","authors":"Chunhui Wang, Guangyu Yang, S. Ouyang, He Qin, Zhiyong Kan, Wanqi Jie","doi":"10.1002/pssa.202300434","DOIUrl":"https://doi.org/10.1002/pssa.202300434","url":null,"abstract":"Accurately assessing the hot workability and flow behavior are crucial in the preparation of high‐performance wrought Mg‐RE alloys. The hot deformation behaviors and workability of Mg‐4.83Gd‐2.36Nd‐0.21Zr alloy were examined via Gleeble 3500 thermo‐simulation tests across a range of deformation temperatures from 350 °C to 450 °C and strain rates ranging from 0.001 s‐1 to 1 s‐1. The experimental results revealed that the flow stress of the experimental alloy decreased as the temperature increased and the strain rate decreased. The activation energies for deformation (Q) of the experiment alloy were calculated by the hyperbolic constitutive equation and ranged from 186.78 to 234.97 kJ mol‐1. Strain compensation was incorporated into the constitutive modeling, resulting in the correlation coefficient (R) of 0.9865 and the average absolute relative error (AARE) of 5.4639%. Further, the processing maps were constructed at different strains based on dynamic material models, from which the feasible processing window of the experimental alloy was determined in the areas of deformation temperatures of 425‐450 °C and strain rates of 0.01‐0.1 s‐1.This article is protected by copyright. All rights reserved.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86612840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Fluence and Pulse Number on Laser‐Cleaning of Atmospheric Pressure Plasma Jet Etched Optical Glasses 通量和脉冲数对常压等离子体射流蚀刻光学玻璃激光清洗的影响

Physica status solidi (A): Applied research Pub Date : 2023-09-02 DOI: 10.1002/pssa.202300485

Robert Heinke, Thomas Arnold, M. Ehrhardt, P. Lorenz, K. Zimmer

{"title":"Influence of Fluence and Pulse Number on Laser‐Cleaning of Atmospheric Pressure Plasma Jet Etched Optical Glasses","authors":"Robert Heinke, Thomas Arnold, M. Ehrhardt, P. Lorenz, K. Zimmer","doi":"10.1002/pssa.202300485","DOIUrl":"https://doi.org/10.1002/pssa.202300485","url":null,"abstract":"The use of beam‐based technologies to process optical elements with nano‐scale precision enables the fabrication of freeform surfaces. Especially, atmospheric pressure plasma jets (APPJ) have desirable properties such as atmospheric pressure machining, dry processing and direct writing capabilities. However, the presence of metal oxides in optical glasses leads to the formation of non‐volatile reaction products during APPJ etching with fluorine‐containing gas mixtures, forming a residual layer that increases surface roughness and alters etching behavior. To prevent the formation of the residual layer the APPJ process is combined with laser‐cleaning. For a possible future in‐situ cleaning of the residual layer during the plasma process, laser parameter ranges need to be found to remove the residual layer without damaging the glass surface. Therefore, planar etchings are performed by APPJ on N‐BK7 and Zerodur and the etched planes are subsequently laser‐irradiated with varying pulse numbers and fluences. The processed samples are then examined by SEM. For both N‐BK7 and Zerodur, a parameter range is identified that results in clean surfaces. The best machining results are achieved with 2 ‐ 16 pulses and laser fluences of 0.6 ‐ 1.2 J cm‐2 for N‐BK7 and 0.56 ‐ 0.7 J cm‐2 for Zerodur.This article is protected by copyright. All rights reserved.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85857991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AlGaN‐Based Solar‐Blind Ultraviolet Detector with a Response Wavelength of 217 nm 响应波长为217 nm的AlGaN基太阳盲紫外探测器

Physica status solidi (A): Applied research Pub Date : 2023-09-02 DOI: 10.1002/pssa.202300231

Ran Zhang, Gang Zheng, Bin Cheng, Junchun bai, Xianqi Lin, Kai Xiao, Yukun Wang, Qianyu Hou, Wenhong Sun

{"title":"AlGaN‐Based Solar‐Blind Ultraviolet Detector with a Response Wavelength of 217 nm","authors":"Ran Zhang, Gang Zheng, Bin Cheng, Junchun bai, Xianqi Lin, Kai Xiao, Yukun Wang, Qianyu Hou, Wenhong Sun","doi":"10.1002/pssa.202300231","DOIUrl":"https://doi.org/10.1002/pssa.202300231","url":null,"abstract":"The research of the high Al(x = 0.75) component has always been the focus of the AlGaN solar‐blind ultraviolet (UV) detector. However, due to the lattice and thermal mismatch between the AlGaN and the underlying substrate under existing mainstream heteroepitaxial growth methods, the large density of defects, e.g., point defects, screw dislocations, and edge dislocations, has hindered the performances of AlGaN‐based solar‐blind UV photodetectors. A short superlattice polarization‐induced P‐type doping growth technique is used to fabricate a high‐performance AlGaN‐based back‐illuminated solar‐blind UV p‐i‐n photodetector (PD) fabricated on sapphire substrates. The back‐illuminated AlGaN UV‐PD shows a high external quantum efficiency of 70.2%. The peak responsivity (R) reaches 123 mA W−1 at −5 V with a wavelength of 217 nm. Meanwhile, the dark current density is 2.21 × 10−8 A cm−2. Additionally, the UV/visible rejection ratio for the detectors exceeds four orders of magnitude, and the detectivity (D*) is calculated to be 6.7 × 1012 cm Hz1/2 W−1. The device performance parameters can be attributed to the quality of the epilayer and heterojunctions. This technology provides new ideas for nitride semiconductor materials, further bringing a breakthrough in a wide‐bandgap electronics device.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78864299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Characterization of Solid‐Solution ReS2−xTex (0 ≤ x ≤ 1) Nanosheets 固溶ReS2 - xTex(0≤x≤1)纳米片的合成与表征

Physica status solidi (A): Applied research Pub Date : 2023-09-02 DOI: 10.1002/pssa.202300337

Shutaro Kawawa, Keitaro Tezuka, Yue Jin Shan

{"title":"Synthesis and Characterization of Solid‐Solution ReS2−xTex (0 ≤ x ≤ 1) Nanosheets","authors":"Shutaro Kawawa, Keitaro Tezuka, Yue Jin Shan","doi":"10.1002/pssa.202300337","DOIUrl":"https://doi.org/10.1002/pssa.202300337","url":null,"abstract":"ReS2 nanosheets have recently attracted attention because of their excellent electrocatalytic properties. It has also been reported that the electrocatalytic activity of solid‐solution ReS2−xSex nanosheets is improved by tuning the bandgap structure through a solid solution with Se. However, Se has application limitations in that it is highly toxic. Thus, herein, solid‐solution ReS2−xTex nanosheets are focused. Solid‐solution ReS2−xTex (x = 0, 0.5, and 1.0) bulk is synthesized by solid‐state reactions. The optical bandgaps of ReS2, ReS1.5Te0.5, and ReSTe are measured to be 1.29, 1.07, and 0.99 eV, respectively. Solid‐solution ReS2−xTex (x = 0, 0.5, and 1.0) nanosheets are obtained by the ultrasonic exfoliation and Li‐intercalation exfoliation of the ReS2−xTex bulks. The typical lateral sizes and thicknesses of the ReS2, ReS1.5Te0.5, and ReSTe nanosheets by ultrasonic exfoliation are 200 and 6 nm, 160 and 3 nm, and 600 and 2 nm, respectively. The typical lateral sizes and thicknesses of ReS2, ReS1.5Te0.5, and ReSTe nanosheets using the Li‐intercalation exfoliation method are 150 and 2 nm, 100 and 1 nm, and 100 and 1 nm, respectively. In the nanosheets obtained from both exfoliation methods, the lateral size is not composition‐dependent, and the thickness decreases with increasing x in ReS2−xTex.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91276271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying the Impact of Al Deposition Method on Underlying Al2O3/Si Interface Quality 量化Al沉积方法对Al2O3/Si界面质量的影响

Physica status solidi (A): Applied research Pub Date : 2023-08-31 DOI: 10.1002/pssa.202200653

I. Mack, Kawa Rosta, U. Quliyeva, J. Ott, T. Pasanen, V. Vähänissi, Zahra Sadat Jahanshah Rad, J. Lehtiö, P. Laukkanen, C. Soldano, H. Savin

{"title":"Quantifying the Impact of Al Deposition Method on Underlying Al2O3/Si Interface Quality","authors":"I. Mack, Kawa Rosta, U. Quliyeva, J. Ott, T. Pasanen, V. Vähänissi, Zahra Sadat Jahanshah Rad, J. Lehtiö, P. Laukkanen, C. Soldano, H. Savin","doi":"10.1002/pssa.202200653","DOIUrl":"https://doi.org/10.1002/pssa.202200653","url":null,"abstract":"Oxide–semiconductor interface quality has often a direct impact on the electrical properties of devices and on their performance. Traditionally, the properties are characterized through metal–oxide–semiconductor (MOS) structures by depositing a metal layer and measuring the capacitance–voltage (C–V) characteristics. However, metal deposition process itself may have an impact on the oxide and the oxide–semiconductor interface. The impact of magnetron sputtering, e‐beam evaporation, and thermal evaporation on an A l 2 O 3 / S i interface is studied, where atomic layer deposited (ALD) A l 2 O 3 is used, by MOS C–V and corona oxide characterization of semiconductors (COCOS) measurements. The latter allows characterization of the interface also in its original state before metallization. The results show that sputtering induces significant damage at the underlying A l 2 O 3 / S i interface as the measured interface defect density D it increases from 10 11 to 10 13 cm−2 eV. Interestingly, sputtering also generates a high density of positive charges Q tot at the interface as the charge changes from − 2 × 10 12 to + 7 × 10 12 cm − 2 . Thermal evaporation is found to be a softer method, with modest impact on D it and Q tot . Finally, Alnealing heals the damage but has also a significant impact on the charge of the film recovering the characteristic negative charge of A l 2 O 3 (∼−4 × 1012 cm − 2 ).","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79561681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

One‐step DcMS and HiPIMS sputtered CIGS films from a quaternary target 一步DcMS和HiPIMS溅射从第四元靶CIGS薄膜

Physica status solidi (A): Applied research Pub Date : 2023-08-27 DOI: 10.1002/pssa.202300178

Rachid Oubaki, Karima Machkih, H. Larhlimi, O. Abegunde, J. Alami, M. Makha

引用次数: 0