keyword
MENU ▼
Read by QxMD icon Read
search

Fabric

keyword
https://www.readbyqxmd.com/read/28532130/effect-of-systematic-control-of-pd-thickness-and-annealing-temperature-on-the-fabrication-and-evolution-of-palladium-nanostructures-on-si-111-via-the-solid-state-dewetting
#1
Sundar Kunwar, Puran Pandey, Mao Sui, Quanzhen Zhang, Ming-Yu Li, Jihoon Lee
Si-based optoelectronic devices embedded with metallic nanoparticles (NPs) have demonstrated the NP shape, size, spacing, and crystallinity dependent on light absorption and emission induced by the localized surface plasmon resonance. In this work, we demonstrate various sizes and configurations of palladium (Pd) nanostructures on Si (111) by the systematic thermal annealing with the variation of Pd thickness and annealing temperature. The evolution of Pd nanostructures are systematically controlled by the dewetting of thin film by means of the surface diffusion in conjunction with the surface and interface energy minimization and Volmer-Weber growth model...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28532127/investigation-of-free-standing-plasmonic-mesoporous-ag-cmk-8-nafion-composite-membrane-for-the-removal-of-organic-pollutants-with-254-nm-uv-irradiation
#2
Chuan Ming Tseng, Hsin Liang Chen, Sz Nian Lai, Ming Shiung Chen, Chien Jung Peng, Chia Jui Li, Wei Hsuan Hung
"Carbon-based material" has demonstrated a great potential on water purification due to its strong physical adsorption to organic pollutants in the water. Three-dimensional cubic ordered mesoporous carbon (CMK-8), one of the well-known ordered mesoporous carbons, was prepared by using nanocasting method with mesoporous silica (KIT-6) as the template. In this study, CMK-8 blended with Nafion polymer to form a free-standing mesoporous CMK-8-Nafion composite membrane. The synthesis of high crystallinity CMK-8 was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM)...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28532125/colorimetric-humidity-sensors-based-on-electrospun-polyamide-cocl2-nanofibrous-membranes
#3
Ming-Hao You, Xu Yan, Jun Zhang, Xiao-Xiong Wang, Xiao-Xiao He, Miao Yu, Xin Ning, Yun-Ze Long
Humidity indicators based on composite polyamide 66/cobalt chloride (PA66/CoCl2) nanofibrous membranes (NFMs) were successfully fabricated by electrospinning. A series of NFMs with various weight percentage of CoCl2 to PA66 were prepared, and their humidity sensitivity based on color changing and quartz crystal microbalance (QCM) were studied. Due to the color change property of cobalt chloride, the as-spun composite NFMs show obviously macroscopic color change from blue to pink as relative humidity (RH) increasing from 12...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28532118/facile-synthesis-of-polymeric-fluorescent-organic-nanoparticles-based-on-the-self-polymerization-of-dopamine-for-biological-imaging
#4
Yingge Shi, Ruming Jiang, Meiying Liu, Lihua Fu, Guangjian Zeng, Qing Wan, Liucheng Mao, Fengjie Deng, Xiaoyong Zhang, Yen Wei
Polymeric fluorescent organic nanoparticles (polymer-FONs) have raised considerable research attention for biomedical applications owing to their advantages as compared with fluorescent inorganic nanoparticles and small organic molecules. In this study, we presented an efficient, facile and environment-friendly strategy to produce polymer-FONs, which relied on the self-polymerization of dopamine and polyethyleneimine (PEI) in rather mild conditions. To obtain the final polymer-FONs, aldehyde group-containing copolymers (named as poly(UA-co-PEGMA)) were synthesized by reversible addition-fragmentation chain-transfer polymerization using polyethylene glycol methyl ether methacrylate (PEGMA) and 1-undecen-10-al (UA) as monomers...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532107/comparison-of-electrospun-and-solvent-cast-polylactic-acid-pla-poly-vinyl-alcohol-pva-inserts-as-potential-ocular-drug-delivery-vehicles
#5
Rajan Sharma Bhattarai, Amitesh Das, Rami M Alzhrani, Dongjin Kang, Sarit B Bhaduri, Sai H S Boddu
PURPOSE: The purpose of this work was to develop, characterize and compare electrospun nanofiber inserts (ENIs) and solvent cast polymeric inserts (SCIs) for ocular drug delivery. METHODS: ENI and SCI of 1%, 5% and 10% w/w dexamethasone were fabricated using a blend of poly-lactic acid (PLA) and poly-vinyl alcohol (PVA). Inserts were characterized for morphology, thickness, pH, drug content, drug crystallinity, in vitro drug release, sterility, dimethylformamide (DMF) and chloroform content, and cytotoxicity...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532105/additive-manufacturing-with-polypropylene-microfibers
#6
Jodie N Haigh, Tim R Dargaville, Paul D Dalton
The additive manufacturing of small diameter polypropylene microfibers is described, achieved using a technique termed melt electrospinning writing. Sequential fiber layering, which is important for accurate three-dimensional fabrication, was achieved with the smallest fiber diameter of 16.4±0.2μm obtained. The collector speed, temperature and melt flow rate to the nozzle were optimized for quality and minimal fiber pulsing. Of particular importance to the success of this method is appropriate heating of the collector plate, so that the electrostatically drawn filament adheres during the direct-writing process...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532103/sensitive-impedimetric-dna-biosensor-based-on-nb-v-codoped-tio2-for-breast-cancer-susceptible-gene-detection
#7
Yu Wang, Xianwei Huang, He Li, Linlang Guo
In this paper, a novel (Nb,V) codoped TiO2 (NVTO) nanoparticle was synthesized, and a novel electrochemical DNA biosensor based on NVTO was first developed for detection of breast cancer susceptible gene detection. The proposed DNA biosensors were fabricated by immobilization of the probe DNA on a nanoporous CHIT-NVTO thin film deposited on an ITO-coated glass plate. The prepared NVTO composite film was characterized by XRD, SEM and FTIR. The results indicated that the synergistic effect of CHIT-NVTO nanocomposite can increase the electroactive surface area and the loading amounts of ssDNA...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532094/electrochemical-sensing-of-doxorubicin-in-unprocessed-whole-blood-cell-lysate-and-human-plasma-samples-using-thin-film-of-poly-arginine-modified-glassy-carbon-electrode
#8
Jafar Soleymani, Mohammad Hasanzadeh, Morteza Eskandani, Maryam Khoubnasabjafari, Nasrin Shadjou, Abolghasem Jouyban
A thin film of poly-arginine fabricated on glassy carbon electrode by one step electrodeposition method is applied for detection of doxorubicin hydrochloride in whole blood, cell lysate, and untreated-plasma samples. Cyclic voltammetry results indicated that the doxorubicin is oxidized via two electrons and two protons at physiological pH (pH=7.4) using poly-arginine thin film modified glassy carbon. More importantly, electrostatic repulsion takes place between the prepared polymer film-modified electrode and selected drug resulting in the signal amplification on oxidation of doxorubicin and lowering its over potential and thereby selective detection of doxorubicin in real samples...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532091/design-and-fabrication-of-carbon-fibers-with-needle-like-nano-ha-coating-to-reinforce-granular-nano-ha-composites
#9
Xudong Wang, Xueni Zhao, Li Zhang, Wanying Wang, Jing Zhang, Fuzhen He, Jianjun Yang
Carbon fibers (CFs) with needle-like nano-hydroxyapatite (nHA) coating were first used as reinforcing materials named nHA-CFs to improve the mechanical properties of pure HA. A powder mixture containing nHA-CFs and granular nano-HA (gHA) was directly sintered by hot pressing at appropriate sintering pressure and temperature. A three-phase nHA-CFs/gHA composite was designed, fabricated, and used as an artificial bone. Results show that the bending strengths of the nHA-CFs/gHA composite are approximately 41.1% and 59...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532086/freeze-casting-for-plga-carbonated-apatite-composite-scaffolds-structure-and-properties
#10
M Schardosim, J Soulié, D Poquillon, S Cazalbou, B Duployer, C Tenailleau, C Rey, R Hübler, C Combes
This paper focuses on the fabrication of three-dimensional porous PLGA-biomimetic carbonated apatite composite scaffolds by freeze-casting and using dimethyl carbonate as a solvent. Several charge/polymer ratios were tested in order to finely understand the influence of the filler rate on the scaffold porosity and mechanical and degradation properties using complementary characterization techniques (SEM, mercury porosimetry and X-ray microtomography). It was demonstrated that the apatite ratio within the composite scaffold has a strong influence in terms of architecture, material cohesion, mechanical properties and in vitro degradation properties...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532073/fabrication-of-vinyl-organosilicon-poly-n-n-4-5-dihydroxy-1-2-phenylene-bis-methylene-bisacrylamide-core-shell-antibacterial-agent
#11
Zhijia Zhang, Xiaole Zhao, Yingchun Su, Defeng Xing, Xiaojun Han
We demonstrate that antibacterial agent N, N'-[(4, 5-dihydroxy-1, 2-phenylene)bis(methylene)]bisacrylamide (OHABA) can be assembled on the surface of vinyl organosilicon nanospheres (VOSNs) by atom transfer radical polymerization (ATRP). Chemically cross-linked vinyl organosilicon cores were facilely fabricated by sol-gel method as support, which densely grafted poly-OHABA (POHABA) as shells. Antibacterial assessment test results revealed that POHABA-based core@shell structure displayed high antibacterial performance, long-term stability, and kept broad-spectrum antibacterial effect of against Gram-negative and Gram-positive bacteria...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532067/development-of-biocompatible-and-safe-polyethersulfone-hemodialysis-membrane-incorporated-with-functionalized-multi-walled-carbon-nanotubes
#12
Muhammad Nidzhom Zainol Abidin, Pei Sean Goh, Ahmad Fauzi Ismail, Mohd Hafiz Dzarfan Othman, Hasrinah Hasbullah, Noresah Said, Siti Hamimah Sheikh Abdul Kadir, Fatmawati Kamal, Mohd Sohaimi Abdullah, Be Cheer Ng
A novel approach in the design of a safe, high performance hemodialysis membrane is of great demand. Despite many advantages, the employment of prodigious nanomaterials in hemodialysis membrane is often restricted by their potential threat to health. Hence, this work focusses on designing a biocompatible polyethersulfone (PES) hemodialysis membrane embedded with poly (citric acid)-grafted-multi walled carbon nanotubes (PCA-g-MWCNTs). Two important elements which could assure the safety of the nanocomposite membrane, i...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532066/design-and-characterization-of-a-novel-nickel-free-cobalt-base-alloy-for-intravascular-stents
#13
Qiang Wang, Yibin Ren, M Babar Shahzad, Wei Zhang, Xumeng Pan, Song Zhang, Dan Zhang
Co-Cr-W-Ni alloy (L605) with high tensile strength is used in coronary stents. The thickness of individual strut of the stent is reduced which can decrease the stent restenosis rate. However, about 10% Ni element content in L605 is found to cause allergic reactions and pulmonary embolism, similar to the traditional 316L stainless steel. In this study, a novel nickel-free cobalt-base alloy Co-20Cr-12Fe-18Mn-2Mo-4W-N (wt%) was designed and fabricated in order to efficiently avoid the potential hazards of Ni element...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532064/encapsulation-of-lactobacillus-kefiri-in-alginate-microbeads-using-a-double-novel-aerosol-technique
#14
Christian Demitri, Leonardo Lamanna, Egidio De Benedetto, Fabrizio Damiano, Maria Stella Cappello, Luisa Siculella, Alessandro Sannino
Alginate micro beads containing Lactobacillus kefiri (the principal bacteria present in the kefir probiotic drink) were produced by a novel technique based on dual aerosols spaying of alginate based solution and CaCl2 as cross linking agent. Carboxymethylcellulose (CMC) has been also added to the alginate in order to change the physic-chemical properties (viscosity and permeability) of the microbeads. Calcium alginate and CMC are biopolymers that can be used for developing oral drug-delivery systems. These biopolymers have been reported to show a pH-dependent swelling behaviour...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532058/interaction-of-nanostructured-tio2-biointerfaces-with-stem-cells-and-biofilm-forming-bacteria
#15
Mukta Kulkarni, Ita Junkar, Petr Humpolíček, Zdenka Capáková, Katarzyna Anna Radaszkiewicz, Nikola Mikušová, Jiří Pacherník, Marián Lehocký, Aleš Iglič, Markéta Hanáčková, Miran Mozetič
Nanostructured TiO2 nanotubes (NTs) of diameters from 15 to 100nm were fabricated by an electrochemical anodization process. Biofilm-positive strains of Bacillus cereus and Pseudomonas aeruginosa behaved similarly on all TiO2 NTs as well as on native titanium (Ti) foil. The adhesion and growth of mesenchymal stem cells (MSc), embryonic stem cells (ESc), and pure cardiomyocytes derived from ESc exhibited significant differences. MSc as well as ESc were, in contrast to cardiomyocytes, able to adhere, and grow on TiO2 NTs...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532057/electrospun-polymer-scaffolds-modified-with-drugs-for-tissue-engineering
#16
Izabella Rajzer, Elżbieta Menaszek, Oscar Castano
The purpose of this paper was to fabricate nanofibrous scaffolds containing ossein-hydroxyapatite complex (osteogenon) to mimic the native bone extracellular matrix. Polylactide (PLDL) and polycaprolactone (PCL) were used to prepare scaffolds using electrospinning. Unfortunately, both of these biodegradable polymers have poor cell recognition sites leading to poor cell affinity and adhesion, therefore, based on our previous experience, osteogenon-drug was used at the stage of fibers forming by electrospinning...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532047/porous-chitosan-microspheres-for-application-as-quick-in-vitro-and-in-vivo-hemostat
#17
Jixiang Li, Xiaowei Wu, Yanqing Wu, Zonghao Tang, Xun Sun, Meng Pan, Yufeng Chen, Juanjuan Li, Rongdong Xiao, Zhengchao Wang, Haiqing Liu
Controlling massive hemorrhage is of great importance to lower transfusional medical cost, and to reduce death and mobility rate in battlefield and civilian accidents. We reported the fabrication of porous chitosan microspheres (CSMS) with tunable surface pore size by microemulsion combined with thermally induced phase separation technique, and its application as a quick hemostat. Their hemostatic property was characterized by blood clotting kinetics, adherence interaction between red blood cells/platelets and CSMS, in vitro and in vivo hemostasis by rat tail amputation and liver laceration models, and histological analysis...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532045/electrochemically-reduced-graphene-oxide-poly-glycine-composite-modified-electrode-for-sensitive-determination-of-l-dopa
#18
Venkata Narayana Palakollu, Neeta Thapliyal, Tirivashe E Chiwunze, Rajshekhar Karpoormath, Sivanandhan Karunanidhi, Srinivasulu Cherukupalli
A facile preparation strategy based on electrochemical technique for the fabrication of glycine (Poly-Gly) and electrochemically reduced graphene oxide (ERGO) composite modified electrode was developed. The morphology of the developed composite (ERGO/Poly-Gly) was investigated using field emission scanning electron microscope (FE-SEM). The composite modified glassy carbon electrode (GCE) was characterized using fourier transform-infrared (FT-IR) spectroscopy, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV)...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532036/facile-fabrication-of-pan-pdms-core-shell-nanofibers-from-synchronous-photopolymerization
#19
Qijian Niu, Xiaolei Zhu, Yunhui Tang, Jun Nie, Guiping Ma
Different from the traditional method for fabricating core-shell structure nanofiber, the PAN/PDMS nanofibers with core-shell structure (PAN as the core layer and PDMS as the shell layer) have been illustrated, which combines with the synchronous photopolymerization during emulsion electrospinning process. The morphology and structure of as-fabricated PAN/PDMS nanofibers are characterized by SEM and TEM. The composition of PAN/PDMS nanofibers is characterized by FTIR, XPS, TG, and DTG, successfully. The photopolymerization process is characterized by UV-vis spectroscopy indirectly...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532033/synthesis-of-nano-sized-timolol-imprinted-polymer-via-ultrasonication-assisted-suspension-polymerization-in-silicon-oil-and-its-use-for-the-fabrication-of-timolol-voltammetric-sensor
#20
Taher Alizadeh, Mohammad Reza Ganjali, Faride Rafiei, Maedeh Akhoundian
A novel timolol voltammetric sensor based on the nano-sized molecularly imprinted polymer (nano-MIP)-modified carbon paste electrode was introduced. Timolol-imprinted polymers (MIP) were synthesized by the ultrasonic assisted suspension polymerization in silicon oil. The MIP nanoparticles were then embedded in a carbon paste (CP) electrode in order to prepare the nano-MIP-CP electrode. Timolol was extracted in the electrode for a definite time and then it was analyzed by square wave voltammetry, found to be an effective determination method...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
keyword
keyword
103569
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"