Journal of Applied Biomaterials & Functional Materials最新文献

{"title":"Influence of carbon and graphene oxide nanoparticle on the adhesive properties of dentin bonding polymer: A SEM, EDX, FTIR study.","authors":"Hanan Alsunbul, Yasser F Alfawaz, Eman M Alhamdan, Imran Farooq, Fahim Vohra, Tariq Abduljabbar","doi":"10.1177/22808000231159238","DOIUrl":"10.1177/22808000231159238","url":null,"abstract":"<p><strong>Objective: </strong>This study was aimed at including 2.5 wt.% of carbon nanoparticles (CNPs) and graphene oxide NPs (GNPs) in a control adhesive (CA) and then investigate the effect of this inclusion on their mechanical properties and its adhesion to root dentin.</p><p><strong>Materials and methods: </strong>Scanning electron microscopy and energy dispersive X-ray (SEM-EDX) mapping were conducted to investigate the structural features and elemental distribution of CNPs and GNPs, respectively. These NPs were further characterized by Raman spectroscopy. The adhesives were characterized by evaluating their push-out bond strength (PBS), rheological properties, degree of conversion (DC) investigation, and failure type analysis.</p><p><strong>Results: </strong>The SEM micrographs revealed that the CNPs were irregular and hexagonal, whereas the GNPs were flake-shaped. EDX analysis showed that carbon (C), oxygen (O), and zirconia (Zr) were found in the CNPs, while the GNPs were composed of C and O. The Raman spectra for CNPs and GNPs revealed their characteristic bands (CNPs-D band: 1334 cm^-1, GNPs-D band: 1341 cm^-1, CNPs-G band: 1650 cm^-1, and GNPs-G band: 1607 cm^-1). The testing verified that the highest bond strength to root dentin were detected for GNP-reinforced adhesive (33.20 ± 3.55 MPa), trailed closely by CNP-reinforced adhesive (30.48 ± 3.10 MPa), while, the CA displayed lowest values (25.11 ± 3.60 MPa). The inter-group comparisons of the NP-reinforced adhesives with the CA revealed statistically significant results (<i>p</i> < 0.01). Failures of adhesive nature were most common in within the adhesives and root dentin. The rheological assessment results demonstrated a reduced viscosity for all the adhesives observed at advanced angular frequencies. All the adhesives verified suitable dentin interaction shown by hybrid layer and appropriate resin tag development. A reduced DC was perceived for both NP-reinforced adhesives, compared to the CA.</p><p><strong>Conclusion: </strong>The present study's findings have demonstrated that 2.5% GNP adhesive revealed the highest, suitable root dentin interaction, and acceptable rheological properties. Nevertheless, a reduced DC was observed (matched with the CA). Prospective studies probing the influence of diverse concentrations of filler NPs on the adhesive's mechanical properties to root dentin are recommended.</p>","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"21 ","pages":"22808000231159238"},"PeriodicalIF":3.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9453234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bovine hydroxyapatite-based scaffold accelerated the inflammatory phase and bone growth in rats with bone defect.","authors":"Maria Apriliani Gani,&nbsp;Aniek Setiya Budiatin,&nbsp;Dewi Wara Shinta,&nbsp;Chrismawan Ardianto,&nbsp;Junaidi Khotib","doi":"10.1177/22808000221149193","DOIUrl":"https://doi.org/10.1177/22808000221149193","url":null,"abstract":"<p><p>Hydroxyapatite (HA) is a biomaterial widely used to treat bone defect, such as due to traffic accident. The HA scaffold is obtained from synthetic HA or natural sources, such as bovine hydroxyapatite (BHA). This study aims to compare the characteristics and in vivo performance of BHA-based and HA-based scaffolds. For this purpose, the scaffold was formulated with gelatin (GEL) and characterised by SEM-EDX, FTIR and mini autograph. The defect model was carried out on the femur area of Wistar rats classified into three animal groups: defect, HA-GEL and BHA-GEL. Postoperatively (7, 14 and 28 days), the bone was radiologically evaluated, and stained with haematoxylin-eosin, anti-CD80 and anti-CD163. The BHA-GEL scaffold showed a regular surface and spherical particle shape, whereas the HA-GEL scaffold exhibited irregular surface. The BHA-GEL scaffold had higher pore size and compressive strength and lower calcium-to-phosphorus ratio than the HA-GEL scaffold. In vivo study showed that the expression of CD80 in the three experimental groups was not significantly different. However, the expression of CD163 differed significantly between the groups. The BHA-GEL group showed robust expression of CD163 on day 7, which rapidly decreased over time. It also showed increased osteoclasts, osteoblasts and osteocytes cell count that contributed to the integrity of the defect area. In conclusion, the BHA-based scaffold exhibited the desired physical and chemical characteristics that benefit in vivo performance versus the HA-based scaffold. Thus, the BHA-based scaffold may be used as a bone graft.</p>","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"21 ","pages":"22808000221149193"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10588897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the biocompatibility of fish skin collagen with the mesenchymal stem cells in <i>in vitro</i> cultures.","authors":"Kinga Rusinek, Anna Słysz, Tomasz Dębski, Katarzyna Siennicka, Aleksandra Zołocińska, Justyna Miszkiewicz-Jasińska, Anna Aleksandrowicz, Zygmunt Pojda","doi":"10.1177/22808000231211423","DOIUrl":"10.1177/22808000231211423","url":null,"abstract":"<p><p>There are scarce published data suggesting, that collagen extracted from fish skin may be an attractive alternative to mammalian-derived collagen for the <i>in vitro</i> cell cultures. In this study, we investigated proliferation potential and differentiation capability into osteogenic and adipogenic lineages of rat adipose-derived mesenchymal stem cells (rASCs) and human adipose-derived mesenchymal stem cells (hASCs) cultured on collagen extracted from silver carp and African sharptooth catfish skins, compared with commercially available mammalian collagen and collagen-free culture dishes. Our results revealed no significant differences between fish collagen and mammalian collagen in supporting cell viability and proliferation capacity. Fish-derived collagen is a cheap material derived from production waste, does not contain transmissible pathogens of mammalian origin, supports human cell cultures at comparable level to conventional collagen sources, and may be considered as the product of choice for the <i>in vitro</i> cell cultures.</p>","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"21 ","pages":"22808000231211423"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138829855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spin-coating of Graphene Oxide as Counter Electrode for Dye-sensitized Solar Cells in Various Dispersing Solvents","authors":"T. Wu, Wei-Ming Huang, Yu-Chi Tsao, J. Tsai","doi":"10.35745/afm2022v02.04.0004","DOIUrl":"https://doi.org/10.35745/afm2022v02.04.0004","url":null,"abstract":"Platinum (Pt) is the most commonly used counter electrode material for DSSCs. However, as Pt is a noble metal and expensive, researchers have tried to replace the Pt counter electrode with a variety of materials. In this study, graphene oxide (GO) powders were added to solvents of different polarities as precursor solutions for the counter electrode. The solvents were deionized water, dimethylformamide, isopropanol, and chlorobenzene in descending order of polarity. The prepared GO precursor solutions were coated on the Florine doped Tin Oxide (FTO) glass substrate via spin coating, then coated substrate subjected to thermal reduction reaction to obtain reduced graphene oxide, which was used as the counter electrode of the DSSC. The photoelectric conversion efficiency (PCE) of DSSC using deionized water as the dispersing solvent was 2.70%, which was five times higher than that of DSSC using chlorobenzene.","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"40 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75141108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular-Dynamical Investigation of Thermomechanical Properties of Spherical Solid and Hollow Nickel Nanopowder during Laser Additive Manufacturing Process","authors":"Ling-Feng Lai, Yu-Chen Su, Chun-Ming Chang, Kuei-Shu Hsu, D. Lu, Jian-Ming Lu","doi":"10.35745/afm2022v02.04.0005","DOIUrl":"https://doi.org/10.35745/afm2022v02.04.0005","url":null,"abstract":"Molecular dynamics (MD) simulation with the embedded-atom method (EAM)/alloy potential is used to investigate the property of the nanoscale hollow spherical Nickel (Ni) powder during the laser additive manufacturing (AM) process. The thermomechanical properties of the Ni nanopowder is also explored (1) at room temperature and (2) from room temperature to the melting temperature during laser AM of powder bed fusion. As a result, the optimum parameters for the laser AM process are proposed. The optimal coalescence temperature of the nanoscale hollow spherical Ni powder is in the range between 980 and 1421K, while the melting temperature is in the range between 1320 and 1470 K. The coalescence and melting temperatures are lower than the melting point of Ni (1728 K).","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"34 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73016146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Direct Visualization of Si and Ge Atoms by Shifting Electron Picoscopy","authors":"O. Kucherov","doi":"10.35745/afm2022v02.04.0002","DOIUrl":"https://doi.org/10.35745/afm2022v02.04.0002","url":null,"abstract":"The picoscopy images of the Si/Ge(100) system were analyzed, and electron cloud densitometry of silicon is presented in this study. The picoscopy is used to distinguish Ge, Si, and other chemical elements because different atoms have different densities of electron clouds. This result is in full accordance with Kucherov's law which states that the current passed through an electron cloud is proportional to the density of the cloud. The picoscopy image has shown Si crystals, Si/Ge solid solution, and their interface as the single crystal without defects. Local deformations in crystals were investigated using methods of direct visualization of individual atoms and measuring the distance of the center of atoms from the node of the crystal lattice. Visual сrystallography becomes a new way to study applied functional materials. This is the first publication on the real structure of a silicon atom.","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"25 2","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72476983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design the Separation Method and Holder for Plastic Lenses","authors":"Nguyen Ngoc Thai, Bing Liu, Kuan-Yu Lu, Gadi Ashok Kumar Reddy, K. Lee","doi":"10.35745/afm2022v02.04.0001","DOIUrl":"https://doi.org/10.35745/afm2022v02.04.0001","url":null,"abstract":"Plastic lenses are very fragile and scratch easily. Therefore, to remove the plastic lens from the door without causing any damage, a precise base bracket is required. This article describes a method for separating plastic lenses using a 15 KHz ultrasonic horn. In this case, EDM and servo motors are used to make micro on the base holder by adjusting the gap voltage, pulse on time, pulse off-time, and outlet water pressure. To check longitudinal vibration at 15 KHz frequencies for ultrasonic horns, perform harmonic analysis by providing 15KHz frequency as the input value. The experimental results demonstrated that the average error of machining micro-holes is 0.01025 mm by EDM. The ultrasonic horn is designed to fit with 15 KHz, after tuning the ultrasonic vibration, the total machining time is 1.25 seconds, and all the plastic lenses on the workpiece gate can break within one cycle. The quality accuracy of the plastic lens is 90.83%.","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"69 3 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85064393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Classification of Guide Rail Block by Xception Model","authors":"Jun-Jie Liao, Jing-Wei Zhang, Bing-En Liu, K. Lee","doi":"10.35745/afm2022v02.04.0003","DOIUrl":"https://doi.org/10.35745/afm2022v02.04.0003","url":null,"abstract":"Linear guide rail blocks are used in linear slide rail accessories to scrape off oil stains in the rails, installed on the front and rear ends of the slider. They are also used in milling machines, lathes, automated machines, robotic arms, electronic instruments, and so on. At present, the industry relies on manpower to carry out the quality inspection of this rail block which is difficult to standardize. Thus, automatic and digital deep learning inspection technology is introduced for the inspection. To understand the suitability of deep learning techniques applied to the linear guide block inspection process, we adopt the convolutional neural network model architecture and use the Xception model. In model training, the training effect is improved by amplifying the image method and testing many different defects. Through the Xception model, the training accuracy is about 98.7% after 30 epochs, the validation accuracy is about 97.4%, and the test accuracy is about 91.8%.","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89873008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Agitation Methods on Characteristics of Iron Ferrite Nanoparticles Synthesized by Co-Precipitation Process","authors":"H. R. Dehghanpour, P. Parvin, A. Younesi, Monireh Gilaki","doi":"10.35745/afm2022v02.03.0005","DOIUrl":"https://doi.org/10.35745/afm2022v02.03.0005","url":null,"abstract":"To assess the result of the stirring process on the Fe3O4 nanoparticles' properties, two types of stirrings (mechanical and magnetic) were compared. Fe3O4 nanoparticles were generated by chemical precipitation. Oleic acid covered the nanoparticles as a surfactant performer. X-ray diffraction (XRD) was used to investigate the fine grains sample, and scanning electron microscope (SEM) images were used for observing the nanoparticles’ geometry. The vibrating sample magnetometer (VSM) was also used to examine the magnetic characteristic of the nanoparticles. Chemical bonds were determined by using Fourier transform infrared spectroscopy (FTIR). As a result, the hysteresis loop characterized the magnetic nanoparticles. Magnetite nanoparticles are regarded as a soft magnetic material due to their low coercivity. XRD diagrams show the presence of powerful peaks in the orientations of crystal surfaces of the spinel form of the nanoparticles. The result showed that nanoparticles were nearly spherical. The average dimensions of the nanoparticles were estimated by Scherrer approximation. The mean particle dimensions were 11 nm (chemical mixer) and 13 nm (magnet mixer). SEM images verified the spherical shape of the nanoparticles, and FTIR confirmed the constitution of Fe-O bonds and validated the spinel ferrites configuration.","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"40 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84474353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Temperature-dependent Photoluminescence Properties of Eu2+-doped CaMgSi2O6 Phosphors","authors":"T. Wu, Guoxiang Peng, Wei-Ren Zhang, Cheng-Fu Yang","doi":"10.35745/afm2022v02.03.0004","DOIUrl":"https://doi.org/10.35745/afm2022v02.03.0004","url":null,"abstract":"The solid-state reaction method was used to synthesize 0.025Eu2+-doped CaMgSi2O6 (Eu-CaMgSi2O6) powder in the reduction atmosphere of 5% H2 + 95% N2 at 1300oC with a duration of 4 h. The reduction atmosphere was removed when the temperature was down to 800oC. The XRD pattern showed that only the CaMgSi2O6 phase was observed in synthesized 0.025Eu2+-doped CaMgSi2O6 powder. Room-temperature photoluminescence excitation (PLE) and photoluminescence (PL) spectra of Eu-CaMgSi2O6 phosphors were recorded by using the Hitachi F-4500 fluorescence spectrophotometer at wavelength ranges of 200–430 and 350–600 nm, respectively. A new important finding is that the synthesized Eu-CaMgSi2O6 phosphor has three important PLE wavelengths. Therefore, Eu-CaMgSi2O6 phosphors are measured from 25oC (room temperature) to 200oC under three different PLE wavelengths to find the effect of temperature on the variations of maximum photoluminescence intensities (PLmax). All the PL spectra show that only one emission band with a central wavelength of 449 nm is found, which is independent of the PLE wavelengths and is caused by the transition of 4f7 → 4f65d1. Another important finding is that the different PLE wavelengths have an apparent effect on the PLmax value of the Eu-CaMgSi2O6 phosphor. Finally, the decay-time curves of Eu-CaMgSi2O6 phosphor under three PLE wavelengths are also investigated.","PeriodicalId":14985,"journal":{"name":"Journal of Applied Biomaterials & Functional Materials","volume":"1 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88932719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}