Shuanger Shi, Chengyong Chen, Shujie Shang, Linhao Gu, Ning Wang
The performance of drilling mud influenced by high temperature emulsifier bitumen (HTEB) was studied in this paper. With high temperature emulsifier bitumen as mud additive, the Apparent viscosity (Av), Plastic viscosity (Pv) and Yield point (Yp) of drilling mud were increased before or after aging. The modulus particle size and average particle size of drilling mud were increased. Comparing with the particle sizes before aging, the particle sizes turn small and the rheological property change for the better after aging. The mud cake was thin, toughness and dense. The toughness of mud cake was increased, as high temperature emulsifier bitumen added. The surface of sandstone core and shale core were enwrapped tightly by high temperature emulsifier bitumen and there no crack appeared in the surface of core. The static filtration was 18.8 ml. The film could be form at the surface of debris, because of the high temperature emulsifier bitumen had adhesion.
{"title":"Study on the Performance of Drilling Mud Affected by High Temperature Emulsified Bitumen","authors":"Shuanger Shi, Chengyong Chen, Shujie Shang, Linhao Gu, Ning Wang","doi":"10.1166/sam.2024.4561","DOIUrl":"https://doi.org/10.1166/sam.2024.4561","url":null,"abstract":"The performance of drilling mud influenced by high temperature emulsifier bitumen (HTEB) was studied in this paper. With high temperature emulsifier bitumen as mud additive, the Apparent viscosity (Av), Plastic viscosity (Pv) and Yield point (Yp) of drilling mud were increased before\u0000 or after aging. The modulus particle size and average particle size of drilling mud were increased. Comparing with the particle sizes before aging, the particle sizes turn small and the rheological property change for the better after aging. The mud cake was thin, toughness and dense. The\u0000 toughness of mud cake was increased, as high temperature emulsifier bitumen added. The surface of sandstone core and shale core were enwrapped tightly by high temperature emulsifier bitumen and there no crack appeared in the surface of core. The static filtration was 18.8 ml. The film could\u0000 be form at the surface of debris, because of the high temperature emulsifier bitumen had adhesion.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140467737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sangjin Lee, Geunno Park, Dongwoo Kim, Kyongnam Kim
Perfluorocarbon (PFC) gas, which is predominantly used in the etching and chamber cleaning processes of semiconductor manufacturing, is very stable and remains on Earth for long periods. Moreover, it has a high global warming potential because it blocks the emission of radiant heat from the Earth and contributes to global warming. To mitigate these effects, the waste PFC gas can be recovered and reused, which also limits the unnecessary waste of resources. In this study, the liquid fluorocarbon C6F6, which has a high C/F ratio and exists as a liquid at room temperature, was selected as an alternative to PFC gas, and adsorption and recovery were performed through an adsorption module during the plasma process. To characterize the recovered gas, residual gas analysis was performed on the gases recovered during etching. In addition, optical emission spectroscopy and printed circuit board probes were used to characterize the plasma. Finally, the feasi-bility of the gas recovery process was evaluated by comparing the thicknesses of the CF polymers produced in Si and SiO2 using an ellipsometer. The results revealed that the C6F6 had similar characteristics before and after recovery, confirming that this gas can be reused and is suitable for use in semiconductor manufacturing as a green alternative.
{"title":"Analysis of Plasma and Gas Characteristics According to the Recovery Process Using a New Alternative Gas","authors":"Sangjin Lee, Geunno Park, Dongwoo Kim, Kyongnam Kim","doi":"10.1166/sam.2024.4646","DOIUrl":"https://doi.org/10.1166/sam.2024.4646","url":null,"abstract":"Perfluorocarbon (PFC) gas, which is predominantly used in the etching and chamber cleaning processes of semiconductor manufacturing, is very stable and remains on Earth for long periods. Moreover, it has a high global warming potential because it blocks the emission of radiant heat\u0000 from the Earth and contributes to global warming. To mitigate these effects, the waste PFC gas can be recovered and reused, which also limits the unnecessary waste of resources. In this study, the liquid fluorocarbon C6F6, which has a high C/F ratio and exists as a liquid\u0000 at room temperature, was selected as an alternative to PFC gas, and adsorption and recovery were performed through an adsorption module during the plasma process. To characterize the recovered gas, residual gas analysis was performed on the gases recovered during etching. In addition, optical\u0000 emission spectroscopy and printed circuit board probes were used to characterize the plasma. Finally, the feasi-bility of the gas recovery process was evaluated by comparing the thicknesses of the CF polymers produced in Si and SiO2 using an ellipsometer. The results revealed that\u0000 the C6F6 had similar characteristics before and after recovery, confirming that this gas can be reused and is suitable for use in semiconductor manufacturing as a green alternative.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Geunno Park, Yu-Hsuan Lee, Dongwoo Kim, Kyongnam Kim
With the increasing demand for semifductors in various fields, productivity efficiency is emerging as an important issue in semiconductor device manufacturing. To maximize semi-conductor productivity, the semiconductor process must be monitored in real time to continuously reflect the results and utilize them for process stabilization. However, various unexpected variables that occur during the process and errors in their judgment may cause a significant loss in semiconductor productivity. In this study, basic research was conducted on the concept of a diagnostic sensor capable of monitoring the etch amount by changing the surface resistance of a thin film according to the process. In various etching processes, a change in the surface resistance was observed according to the change in the thickness of the thin film, and the correlation between the change in thickness and the change in the physical quantity was studied. The trend of the overall measured values showed linearity. Based on the linear change in the etch amount and surface resistance according to the cycle change, the change in surface resistance according to the etch amount was quantitatively calculated. For the reliability of measurement, the thickness was compared using SEM and an el-lipsometer, and both investigated a thickness of 304 nm.
{"title":"A Study on Process Diagnosis Technology to Improve the Reliability of the Etching Process","authors":"Geunno Park, Yu-Hsuan Lee, Dongwoo Kim, Kyongnam Kim","doi":"10.1166/sam.2024.4648","DOIUrl":"https://doi.org/10.1166/sam.2024.4648","url":null,"abstract":"With the increasing demand for semifductors in various fields, productivity efficiency is emerging as an important issue in semiconductor device manufacturing. To maximize semi-conductor productivity, the semiconductor process must be monitored in real time to continuously reflect the\u0000 results and utilize them for process stabilization. However, various unexpected variables that occur during the process and errors in their judgment may cause a significant loss in semiconductor productivity. In this study, basic research was conducted on the concept of a diagnostic sensor\u0000 capable of monitoring the etch amount by changing the surface resistance of a thin film according to the process. In various etching processes, a change in the surface resistance was observed according to the change in the thickness of the thin film, and the correlation between the change\u0000 in thickness and the change in the physical quantity was studied. The trend of the overall measured values showed linearity. Based on the linear change in the etch amount and surface resistance according to the cycle change, the change in surface resistance according to the etch amount was\u0000 quantitatively calculated. For the reliability of measurement, the thickness was compared using SEM and an el-lipsometer, and both investigated a thickness of 304 nm.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139967157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zeeshan Rafi, Salman Khan, S. Sherwani, Eida M. Alshammari, M. Khan, Bander Fayez Alshammari, Mohd Wajid Ali Khan, Rabab Anjum, Mohd. Yasir Khan, Naved Ahmad, Kirtanjot Kaur, Uzma Shahab, Saheem Ahmad
This investigation explores the successful synthesis and comprehensive characterization of Citrus sinensis seed-mediated gold nanoparticles designated as C-AuNPs. Visual confirmation of synthesis was achieved through a distinct ruby red color change in the reaction mixture, followed by UV-Visible spectroscopy, which revealed a characteristic peak absorbance at 522 nm due to the Surface Plasmon Resonance (SPR) phenomenon associated with gold nanoparticles. Transmission Electron Microscopy (TEM) analysis demonstrated uniform, spherical nanoparticles with an average size of 19 nm, ideal for biomedical applications. Dynamic Light Scattering (DLS) revealed a hydrodynamic size of 55 nm in the hydrated state, while a negative zeta potential of −17 mV indicated colloidal stability. C-AuNPs exhibited significant antibacterial activity against both Gram-negative and Gram-positive bacterial strains, surpassing the performance of levofloxacin. Lower Minimum Inhibitory Concentration (MIC) values against bacterial strains further supported their enhanced efficacy, potentially due to interactions with bacterial cell membranes. Furthermore, C-AuNPs demonstrated potent inhibition of α-amylase and α-glucosidase enzymes involved in glucose metabolism, with IC50 values comparable to the anti-diabetic drug acarbose. This suggests their potential as anti-diabetic agents, with the ability to regulate blood sugar levels. C-AuNPs exhibit unique optical, structural, and electrostatic properties, making them promising candidates for diverse biomedical applications. Their small size, stability, antibacterial efficacy, and anti-diabetic properties position C-AuNPs as valuable assets in the realm of nanomedicine and therapeutics, warranting further exploration and development.
{"title":"Citrus sinensis Seed-Mediated Gold Nanoparticles for Combating Diabetes and Bacterial Infections: A Promising Multifunctional Nano Formulation","authors":"Zeeshan Rafi, Salman Khan, S. Sherwani, Eida M. Alshammari, M. Khan, Bander Fayez Alshammari, Mohd Wajid Ali Khan, Rabab Anjum, Mohd. Yasir Khan, Naved Ahmad, Kirtanjot Kaur, Uzma Shahab, Saheem Ahmad","doi":"10.1166/sam.2024.4634","DOIUrl":"https://doi.org/10.1166/sam.2024.4634","url":null,"abstract":"This investigation explores the successful synthesis and comprehensive characterization of Citrus sinensis seed-mediated gold nanoparticles designated as C-AuNPs. Visual confirmation of synthesis was achieved through a distinct ruby red color change in the reaction mixture, followed\u0000 by UV-Visible spectroscopy, which revealed a characteristic peak absorbance at 522 nm due to the Surface Plasmon Resonance (SPR) phenomenon associated with gold nanoparticles. Transmission Electron Microscopy (TEM) analysis demonstrated uniform, spherical nanoparticles with an average size\u0000 of 19 nm, ideal for biomedical applications. Dynamic Light Scattering (DLS) revealed a hydrodynamic size of 55 nm in the hydrated state, while a negative zeta potential of −17 mV indicated colloidal stability. C-AuNPs exhibited significant antibacterial activity against both Gram-negative\u0000 and Gram-positive bacterial strains, surpassing the performance of levofloxacin. Lower Minimum Inhibitory Concentration (MIC) values against bacterial strains further supported their enhanced efficacy, potentially due to interactions with bacterial cell membranes. Furthermore, C-AuNPs demonstrated\u0000 potent inhibition of α-amylase and α-glucosidase enzymes involved in glucose metabolism, with IC50 values comparable to the anti-diabetic drug acarbose. This suggests their potential as anti-diabetic agents, with the ability to regulate blood sugar levels.\u0000 C-AuNPs exhibit unique optical, structural, and electrostatic properties, making them promising candidates for diverse biomedical applications. Their small size, stability, antibacterial efficacy, and anti-diabetic properties position C-AuNPs as valuable assets in the realm of nanomedicine\u0000 and therapeutics, warranting further exploration and development.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eun-Bi Kim, Tae-Geum Kim, M. S. Akhtar, Ahmad Umar, Hassan Fouad, Nasser M. Abd El-salam, Sadia Ameen
In recent advancements in dye sensitized solar cell (DSSC) technology, the integration of inorganic nanofillers into polymer electrolytes has emerged as a promising strategy to enhance the structural stability and electrochemical performance of the devices. This study investigates the impact of various inorganic nanofillers, including TiO2, SiO2, and Al2O3, on the properties of polymer composite electrolytes employed in solid-state DSSCs sensitized with N719 dye. Among the considered nanofillers, the incorporation of Al2O3 into the polymer composite electrolyte demonstrated superior results, exhibiting heightened ionic conductivity and photo-current density attributed to increased amorphicity and reduced crystallinity. The Al2O3-enhanced DSSCs achieved notable photovoltaic parameters, including a conversion efficiency (η) of 5.61%, a high short circuit current (JSC) of approximately 13.17 mA/cm2, and an open circuit voltage (VOC) of approximately 0.707 V. Comparative analysis with other polymer composite electrolytes revealed that the Al2O3-based system surpassed in terms of photovoltaic performance. This study underscores the pivotal role of diverse nanofillers in polymer composite electrolytes for augmenting photocurrent density, conversion efficiency, and overall device stability.
{"title":"Enhanced Performance of Dye Sensitized Solar Cells Through the Incorporation of Al2O3 Nanofillers in Polymer Electrolytes","authors":"Eun-Bi Kim, Tae-Geum Kim, M. S. Akhtar, Ahmad Umar, Hassan Fouad, Nasser M. Abd El-salam, Sadia Ameen","doi":"10.1166/sam.2024.4650","DOIUrl":"https://doi.org/10.1166/sam.2024.4650","url":null,"abstract":"In recent advancements in dye sensitized solar cell (DSSC) technology, the integration of inorganic nanofillers into polymer electrolytes has emerged as a promising strategy to enhance the structural stability and electrochemical performance of the devices. This study investigates the\u0000 impact of various inorganic nanofillers, including TiO2, SiO2, and Al2O3, on the properties of polymer composite electrolytes employed in solid-state DSSCs sensitized with N719 dye. Among the considered nanofillers, the incorporation of Al2O3\u0000 into the polymer composite electrolyte demonstrated superior results, exhibiting heightened ionic conductivity and photo-current density attributed to increased amorphicity and reduced crystallinity. The Al2O3-enhanced DSSCs achieved notable photovoltaic parameters, including\u0000 a conversion efficiency (η) of 5.61%, a high short circuit current (JSC) of approximately 13.17 mA/cm2, and an open circuit voltage (VOC) of approximately 0.707 V. Comparative analysis with other polymer composite electrolytes revealed\u0000 that the Al2O3-based system surpassed in terms of photovoltaic performance. This study underscores the pivotal role of diverse nanofillers in polymer composite electrolytes for augmenting photocurrent density, conversion efficiency, and overall device stability.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140467285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Using the pre-polymer method, we created new materials called antimicrobial polyurethane (PU). To analyze the chemical structures of the PU materials, we used various techniques, including Fourier transform infrared (FTIR), 1H-NMR, gel permeation chromatography (GPC), and Differential Scanning Calorimetry (DSC). In addition, we investigated the surface properties of the PU material by scanning electron microscopy (SEM). According to the mechanical assessment, the antimicrobial polyurethane films display good mechanical qualities. We have also tested the barrier and antimicrobial properties of the films, and the results show that these films have good barrier properties and that the antimicrobial polyurethane films have better antimicrobial properties compared to pure polyurethane films. These properties are enhanced as the antimicrobial agent content in the antimicrobial polyurethane films increases.
{"title":"Preparation and Properties of Novel Antimicrobial Polyurethane Materials","authors":"Deyi Teng, Yuying Yang, Guichang Jiang, Fen Yin1","doi":"10.1166/sam.2024.4559","DOIUrl":"https://doi.org/10.1166/sam.2024.4559","url":null,"abstract":"Using the pre-polymer method, we created new materials called antimicrobial polyurethane (PU). To analyze the chemical structures of the PU materials, we used various techniques, including Fourier transform infrared (FTIR), 1H-NMR, gel permeation chromatography (GPC), and Differential\u0000 Scanning Calorimetry (DSC). In addition, we investigated the surface properties of the PU material by scanning electron microscopy (SEM). According to the mechanical assessment, the antimicrobial polyurethane films display good mechanical qualities. We have also tested the barrier and antimicrobial\u0000 properties of the films, and the results show that these films have good barrier properties and that the antimicrobial polyurethane films have better antimicrobial properties compared to pure polyurethane films. These properties are enhanced as the antimicrobial agent content in the antimicrobial\u0000 polyurethane films increases.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jawed Mustafa, M. Ayaz Ahmad, Priyanka Gupta, M. M. Abdullah, Md. Athar, Mohammad Luqman
A precisely designed coated-wire cobalt ion-selective electrode (ISE) was created using a poly(vinyl chloride) matrix and 2,4-Dinitrophenyl)-2-(diphenylmethylene) Hydrazine as a neutral carrier. In the concentration range of 5.4×10−8 to 1×10−1 M, this new sensor demonstrated a good linear Nernstian response with a slope of 29.8 mV per decade change and an extraordinarily low detection limit of 3.4×10−8 M. The sensor demonstrated exceptional selectivity for Co (II) ions, outperforming mono-, bi-, and tri-valent other cations, while functioning efficiently in the pH range of 3.1–11.2. The selectivity coefficients (Kij) for the following ions were carefully calculated: Na+, K+, Li+, Ag+, Cr3+, Mn2+, Fe2+, Ni2+, Cu2+, Cd2+, Zn2+, Hg2+, Mg2+, Ca2+. The values of the coefficients ranged from 10−4 to 10−2. This sensor was effectively employed as an indicating electrode during potentiometric titration for cobalt ions alongside EDTA, demonstrating even more of its versatility. In addition, the ISE demonstrated its analytical capabilities by precisely identifying the amounts of cobalt in a range of environmental evaluations.
{"title":"Coated Wire Cobalt (II) Selective Potentiometric Sensor Based on (2,4-Dinitrophenyl)-2-(Diphenylmethylene) Hydrazine","authors":"Jawed Mustafa, M. Ayaz Ahmad, Priyanka Gupta, M. M. Abdullah, Md. Athar, Mohammad Luqman","doi":"10.1166/sam.2024.4627","DOIUrl":"https://doi.org/10.1166/sam.2024.4627","url":null,"abstract":"A precisely designed coated-wire cobalt ion-selective electrode (ISE) was created using a poly(vinyl chloride) matrix and 2,4-Dinitrophenyl)-2-(diphenylmethylene) Hydrazine as a neutral carrier. In the concentration range of 5.4×10−8 to 1×10−1\u0000 M, this new sensor demonstrated a good linear Nernstian response with a slope of 29.8 mV per decade change and an extraordinarily low detection limit of 3.4×10−8 M. The sensor demonstrated exceptional selectivity for Co (II) ions, outperforming mono-, bi-, and tri-valent\u0000 other cations, while functioning efficiently in the pH range of 3.1–11.2. The selectivity coefficients (Kij) for the following ions were carefully calculated: Na+, K+, Li+, Ag+, Cr3+, Mn2+, Fe2+, Ni2+,\u0000 Cu2+, Cd2+, Zn2+, Hg2+, Mg2+, Ca2+. The values of the coefficients ranged from 10−4 to 10−2. This sensor was effectively employed as an indicating electrode during potentiometric titration for\u0000 cobalt ions alongside EDTA, demonstrating even more of its versatility. In addition, the ISE demonstrated its analytical capabilities by precisely identifying the amounts of cobalt in a range of environmental evaluations.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Athba Alqahtani, Yousef AlObaisi, Mohammed S Alqahtani, Hussain Al-Mohiy, Essam H. Ibrahim, El Sayed Yousef
Incorporated gold ions Au into glass with composition 30P2O5–20Ca(OH)2–20ZnO-8.0KF-5B2O3–2.0TiO2 in mol% with 400 ppm (Gold III Chloride trihydrate HAuCl4–3H2O) and 600 ppm (Gold III Chloride trihydrate HAuCl4–3H2O) by using terdiurnal method quenching method. The present glass’s Vicker microhardness, Hv, was determined together with X-ray diffraction (XRD) and differential thermal analysis (DTA). Utilizing a transmission electron microscope (TEM) and a scanning electron microscope (SEM), the gold nanoparticle and microstructure of these glasses were examined. According to the SEM photographs the heat treatment method significantly changed the form of the crystals phase of produced glass-ceramic. The glass-doped Au was verified by TEM to be nanocrystalline, with a spherical form and varying sizes between 14.7 and 16.2 nm. Investigations have been carried out into the bioactivity of the produced glass, including its antibacterial, anti-proliferative/cytotoxic properties against both normal and activated splenic cells In Vitro, and anticancer effects. These findings demonstrated the strongest antibacterial activity against both Gram positive and Gram negative bacteria as well as fungi in the glass doped with 600 parts per million of Au ions. It also demonstrated anti-proliferative/cytotoxicity against normal splenic cells, but had the maximum level of neither cytotoxicity nor proliferative effects on activated splenic cells. According to the data, these produced glasses show promise as possibilities for many medical applications.
{"title":"Gold nanoparticle-Enhanced Bioglass: Unveiling In Vitro and In Vivo Bioactivity Characteristics for Advanced Medical Applications","authors":"Athba Alqahtani, Yousef AlObaisi, Mohammed S Alqahtani, Hussain Al-Mohiy, Essam H. Ibrahim, El Sayed Yousef","doi":"10.1166/sam.2024.4631","DOIUrl":"https://doi.org/10.1166/sam.2024.4631","url":null,"abstract":"Incorporated gold ions Au into glass with composition 30P2O5–20Ca(OH)2–20ZnO-8.0KF-5B2O3–2.0TiO2 in mol% with 400 ppm (Gold III Chloride trihydrate HAuCl4–3H2O) and 600 ppm\u0000 (Gold III Chloride trihydrate HAuCl4–3H2O) by using terdiurnal method quenching method. The present glass’s Vicker microhardness, Hv, was determined together with X-ray diffraction (XRD) and differential thermal analysis (DTA). Utilizing a transmission electron\u0000 microscope (TEM) and a scanning electron microscope (SEM), the gold nanoparticle and microstructure of these glasses were examined. According to the SEM photographs the heat treatment method significantly changed the form of the crystals phase of produced glass-ceramic. The glass-doped Au\u0000 was verified by TEM to be nanocrystalline, with a spherical form and varying sizes between 14.7 and 16.2 nm. Investigations have been carried out into the bioactivity of the produced glass, including its antibacterial, anti-proliferative/cytotoxic properties against both normal and activated\u0000 splenic cells In Vitro, and anticancer effects. These findings demonstrated the strongest antibacterial activity against both Gram positive and Gram negative bacteria as well as fungi in the glass doped with 600 parts per million of Au ions. It also demonstrated anti-proliferative/cytotoxicity\u0000 against normal splenic cells, but had the maximum level of neither cytotoxicity nor proliferative effects on activated splenic cells. According to the data, these produced glasses show promise as possibilities for many medical applications.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Vignesh, K. Vinoth, J. Emima Jeronsia, L. Chinnappa, Faheem Ahmed, Zishan Husain Khan, Nasser M. Abd El-salam, Hassan Fouad
In this study, we systematically varied the weight ratios of zinc and iron oxides (2 wt%, 4 wt%, and 6 wt%) to fabricate nanocomposites consisting of polyaniline (PANI), zinc oxide (ZnO), and iron oxide (Fe3O4) through the sol–gel method. Comprehensive analyses using FTIR, XRD, and SEM were conducted to elucidate the functional groups, particle size, crystal structure, and surface morphologies of PANI/ZnO/Fe3O4 nanocomposites. Furthermore, thermoelectric characteristics were thoroughly investigated. A mechanistic insight into the PANI/ZnO/Fe3O4 nanocomposite formation was proposed based on the FTIR findings. SEM investigations revealed the presence of spherical particles in all nanocomposites. Among the three PANI/ZnO/Fe3O4 nanocomposites characterized, the formulation with 6 wt% exhibited superior thermoelectric performance. The electrical conductivity of the nanocomposites exhibited a notable increase from 23.1 to 42.7 mS/cm when the temperature elevated from 30–90 °C. Concurrently, the thermal conductivity exhibited a decline from 1.229 to 0.704 Wm−1K−1, resulting in an augmented figure of merit of 0.024. This enhancement underscores the positive influence of increasing the weight percentage of ZnO and Fe3O4 with PANI on the TE performances of the nanocomposites.
{"title":"Enhancement of Thermoelectric Properties in Nanocomposites Through the Synergistic Integration of Zinc and Iron Oxides with Polyaniline","authors":"C. Vignesh, K. Vinoth, J. Emima Jeronsia, L. Chinnappa, Faheem Ahmed, Zishan Husain Khan, Nasser M. Abd El-salam, Hassan Fouad","doi":"10.1166/sam.2024.4630","DOIUrl":"https://doi.org/10.1166/sam.2024.4630","url":null,"abstract":"In this study, we systematically varied the weight ratios of zinc and iron oxides (2 wt%, 4 wt%, and 6 wt%) to fabricate nanocomposites consisting of polyaniline (PANI), zinc oxide (ZnO), and iron oxide (Fe3O4) through the sol–gel method. Comprehensive analyses\u0000 using FTIR, XRD, and SEM were conducted to elucidate the functional groups, particle size, crystal structure, and surface morphologies of PANI/ZnO/Fe3O4 nanocomposites. Furthermore, thermoelectric characteristics were thoroughly investigated. A mechanistic insight into\u0000 the PANI/ZnO/Fe3O4 nanocomposite formation was proposed based on the FTIR findings. SEM investigations revealed the presence of spherical particles in all nanocomposites. Among the three PANI/ZnO/Fe3O4 nanocomposites characterized, the formulation\u0000 with 6 wt% exhibited superior thermoelectric performance. The electrical conductivity of the nanocomposites exhibited a notable increase from 23.1 to 42.7 mS/cm when the temperature elevated from 30–90 °C. Concurrently, the thermal conductivity exhibited a decline from 1.229 to 0.704\u0000 Wm−1K−1, resulting in an augmented figure of merit of 0.024. This enhancement underscores the positive influence of increasing the weight percentage of ZnO and Fe3O4 with PANI on the TE performances of the nanocomposites.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Barium titanate has been a widely used dielectric material due to its favorable properties, including high dielectric constant, low dielectric loss, stable dielectric behavior and a cost-effective price. In this study a novel barium titanate-based relaxor ferroelectric ceramics, Nax/2Lax/2Ba1−x TiO3, was prepared using multi-element chemical doping substitution and solid-phase sintering method. Investigations into the optimal processing conditions and compositional ratios for ceramics have led to significant insights into their microstructural and macroscopic attributes. Specifically, the ceramic composed of Na0.075La0.075Ba0.85, with a composition parameter x equal to 0.15, has demonstrated prominent characteristics of a relaxor ferroelectric. This ceramic composition achieved an impressive energy storage efficiency, reaching up to 93.9%. In the context of energy storage under specific conditions, notable efficiencies were observed. The highest density of energy storage achieved was 0.342 J/cm3, while the energy that could be effectively recovered registered at 0.304 J/cm3. These measurements were recorded under the influence of an electric field with an intensity of 60 kilovolts per centimeter. These findings suggest that ceramics based on barium titanate possess considerable potential for application in energy storage systems, marking them as promising materials in this field.
{"title":"Preparation of Barium Titanate-Based Ferroelectric Ceramics by Solid-Phase Sintering and Its Energy Storage Performance","authors":"Meng Wang","doi":"10.1166/sam.2024.4608","DOIUrl":"https://doi.org/10.1166/sam.2024.4608","url":null,"abstract":"Barium titanate has been a widely used dielectric material due to its favorable properties, including high dielectric constant, low dielectric loss, stable dielectric behavior and a cost-effective price. In this study a novel barium titanate-based relaxor ferroelectric ceramics, Nax/2Lax/2Ba1−x\u0000 TiO3, was prepared using multi-element chemical doping substitution and solid-phase sintering method. Investigations into the optimal processing conditions and compositional ratios for ceramics have led to significant insights into their microstructural and macroscopic attributes.\u0000 Specifically, the ceramic composed of Na0.075La0.075Ba0.85, with a composition parameter x equal to 0.15, has demonstrated prominent characteristics of a relaxor ferroelectric. This ceramic composition achieved an impressive energy storage efficiency,\u0000 reaching up to 93.9%. In the context of energy storage under specific conditions, notable efficiencies were observed. The highest density of energy storage achieved was 0.342 J/cm3, while the energy that could be effectively recovered registered at 0.304 J/cm3. These\u0000 measurements were recorded under the influence of an electric field with an intensity of 60 kilovolts per centimeter. These findings suggest that ceramics based on barium titanate possess considerable potential for application in energy storage systems, marking them as promising materials\u0000 in this field.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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