keyword
MENU ▼
Read by QxMD icon Read
search

Multilayer

keyword
https://www.readbyqxmd.com/read/28110041/a-supramolecular-bioactive-surface-for-specific-binding-of-protein
#1
Changming Hu, Yangcui Qu, Wenjun Zhan, Ting Wei, Limin Cao, Qian Yu, Hong Chen
Bioactive surfaces with immobilized bioactive molecules aimed specifically at promoting or supporting particular interactions are of great interest for application of biosensors and biological detection. In this work, we fabricated a supramolecular bioactive surface with specific protein binding capability using two noncovalent interactions as the driving forces. The substrates were first layer-by-layer (LbL) deposited with a multilayered polyelectrolyte film containing "guest" adamantane groups via electrostatic interactions, followed by incorporation of "host" β-cyclodextrin derivatives bearing seven biotin units (CD-B) into the films via host-guest interactions...
January 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28109026/refinement-of-the-criteria-for-ultrastructural-peritubular-capillary-basement-membrane-multilayering-in-the-diagnosis-of-chronic-active-acute-antibody-mediated-rejection
#2
Heounjeong Go, Sung Shin, Young Hoon Kim, Duck Jong Han, Yong Mee Cho
Chronic active/acute antibody-mediated rejection (cABMR) is the main cause of late renal allograft loss. Severe peritubular capillary basement membrane multilayering (PTCML) assessed on electron microscopy is one diagnostic feature of cABMR according to the Banff2013 classification. We aimed to refine the PTCML criteria for an earlier diagnosis of cABMR. We retrospectively investigated ultrastructural features of 159 consecutive renal allografts and 44 non-allografts. The presence of serum donor-specific antibodies at the time of biopsy of allografts was also examined...
January 21, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28108961/effects-of-negatively-and-positively-charged-ti-metal-surfaces-on-ceramic-coating-adhesion-and-cell-response
#3
Rodney Marcelo do Nascimento, Vanessa Rafaela de Carvalho, José Silvio Govone, Antônio Carlos Hernandes, Nilson Cristino da Cruz
This manuscript reports an evaluation of the effects of simple chemical-heat treatments on the deposition of different ceramic coatings, i.e., TiO2, CaTiO3 and CaP, on commercially pure titanium (cp-Ti) and Ti6Al4V and the influence of the coatings on cells interaction with the surfaces. The ceramic materials were prepared by the sol-gel method and the coating adhesion was analyzed by pull-off bending tests. The wettability of positively or negatively charged surfaces was characterized by contact angle measurements, which also enabled the calculation of the surface free energy through the polar-apolar liquids approach...
February 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28106850/au-graphene-hybrid-plasmonic-nanostructure-sensor-based-on-intensity-shift
#4
Raed Alharbi, Mehrdad Irannejad, Mustafa Yavuz
Integrating plasmonic materials, like gold with a two-dimensional material (e.g., graphene) enhances the light-material interaction and, hence, plasmonic properties of the metallic nanostructure. A localized surface plasmon resonance sensor is an effective platform for biomarker detection. They offer a better bulk surface (local) sensitivity than a regular surface plasmon resonance (SPR) sensor; however, they suffer from a lower figure of merit compared to that one in a propagating surface plasmon resonance sensors...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28106366/redox-properties-of-polyvinylamine-g-tempo-in-multilayer-films-with-sodium-poly-styrene-sulfonate
#5
Qiang Fu, Igor Zoudanov, Emil Gustafsson, Dong Yang, Leyla Soleymani, Robert H Pelton
Layer-by-layer (LbL) assemblies of polyvinylamine with grafted TEMPO moieties (PVAm-T) with sodium polystyrene sulfonate (PSS) were prepared on gold-sulfonate surfaces and the redox properties were measured by cyclic voltammetry. LbL compositions were probed by quartz crystal microbalance (wet) and ellipsometric (dry) film measurements. Approximately 30% of the TEMPO moieties in the LbL assemblies were redox-active when the total TEMPO coverage was varied up to 6 mol/m2, by either varying the TEMPO content in PVAm-T or by varying the number of LbL bilayers...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28105807/laboratory-setup-for-scanning-free-grazing-emission-x-ray-fluorescence
#6
J Baumann, C Herzog, M Spanier, D Grötzsch, L Lühl, K Witte, A Jonas, S Günther, F Förste, R Hartmann, M Huth, D Kalok, D Steigenhöfer, M Krämer, T Holz, R Dietsch, L Strüder, B Kanngießer, I Mantouvalou
Grazing incidence and grazing emission X-ray fluorescence spectroscopy (GI/GE-XRF) are techniques that enable nondestructive, quantitative analysis of elemental depth profiles with a resolution in the nanometer regime. A laboratory setup for soft X-ray GEXRF measurements is presented. Reasonable measurement times could be achieved by combining a highly brilliant laser produced plasma (LPP) source with a scanning-free GEXRF setup, providing a large solid angle of detection. The detector, a pnCCD, was operated in a single photon counting mode in order to utilize its energy dispersive properties...
January 10, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28104500/photographic-assessment-of-retinal-hemorrhages-in-infant-head-injury-the-childhood-hemorrhagic-retinopathy-study
#7
Gaurav Bhardwaj, Mark B Jacobs, Frank J Martin, Kieran T Moran, Kristina Prelog, Craig Donaldson, Ute Vollmer-Conna, Minas T Coroneo
BACKGROUND: Retinal hemorrhages (RH) in babies in the absence of severe trauma or a medical cause have been strongly associated with abusive head trauma (AHT). We examined the pattern of RH in accidental head injury and AHT objectively using widefield retinal imaging. METHODS: A total of 118 infants and children 1-36 months of age admitted with head injuries at two centers were included in this prospective, consecutive, comparative cohort study. Dilated fundus examination was performed with indirect ophthalmoscopy and widefield imaging...
January 16, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28104373/novel-multilayer-microcapsules-based-on-soy-protein-isolate-fibrils-and-high-methoxyl-pectin-production-characterization-and-release-modeling
#8
Elham Ansarifar, Mohebbat Mohebbi, Fakhri Shahidi, Arash Koocheki, Navid Ramezanian
In this study, novel microcapsules were produced through the layer by layer adsorption of food-grade and plant-based polyelectrolytes, soy protein isolate (SPI) fibrils and high methoxyl pectin (HMP). The physical properties of the fibrils were investigated by TEM and AFM and the properties of the microcapsules such as size, uniformity, zeta potential, morphology, functional groups, modeling and the release kinetics of limonene were examined. The results revealed that SPI-fibrils had a thickness varying from 1 to 10nm and strand like structure...
January 16, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28102868/control-and-automation-of-multilayered-integrated-microfluidic-device-fabrication
#9
Sarit Kipper, Ludmila Frolov, Ortal Guy, Michal Pellach, Yair Glick, Asaf Malichi, Binyamin A Knisbacher, Efrat Barbiro-Michaely, Dorit Avrahami, Yehuda Yavets-Chen, Erez Y Levanon, Doron Gerber
Integrated microfluidics is a sophisticated three-dimensional (multi layer) solution for high complexity serial or parallel processes. Fabrication of integrated microfluidic devices requires soft lithography and the stacking of thin-patterned PDMS layers. Precise layer alignment and bonding is crucial. There are no previously reported standards for alignment of the layers, which is mostly performed using uncontrolled processes with very low alignment success. As a result, integrated microfluidics is mostly used in academia rather than in the many potential industrial applications...
January 19, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28102385/afm-study-on-the-adsorption-of-hg-2-on-natural-molybdenum-disulfide-in-aqueous-solutions
#10
Feifei Jia, Xian Zhang, Shaoxian Song
The adsorption of Hg(2+) on natural molybdenum disulfide has been studied using atomic force microscope (AFM). The AFM imaging clearly illustrated the adsorption of Hg(2+) on the surface of molybdenum disulfide, and also hydration layers on the surfaces. It was found that the presence of a hydration layer on molybdenum disulfide surfaces hindered the Hg(2+) adsorption. Also, it was observed that the Hg(2+) adsorbed appeared in the form of multilayers. The first adsorbed Hg(2+) layer might be mainly attributed to the complexation of Hg(2+) with S atoms exposed on molybdenum disulfide surfaces, while the second one might be due to the electrostatic interaction between negatively charged molybdenum disulfide and the cation Hg(2+)...
January 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28102068/robust-guar-gum-cellulose-nanofibrils-multilayer-films-with-good-barrier-properties
#11
Lei Dai, Zhu Long, Jie Chen, Xingye An, Dong Cheng, Avik Khan, Yonghao Ni
The pursuit of sustainable functional materials requires development of materials based on renewable resources and efficient fabrication methods. Hereby, we fabricated all-polysaccharides multilayer films using cationic guar gum (CGG) and anionic cellulose nanofibrils (i.e. TEMPO-oxidized cellulose nanofibrils, TOCNs) through a layer-by-layer casting method. This technique is based on alternate depositions of oppositely charged water-based CGG and TOCNs onto laminated films. The resultant polyelectrolyte multilayer films were transparent, ductile and strong...
January 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28101881/using-a-novel-technology-for-disaster-staff-notification
#12
Stephen C Morris, Janice K Pelley, Steven H Mitchell
Notification of backup staff and determining their ability to augment frontline staff is a major component of any disaster plan. However, the communication and organization of this effort has many challenges. These include communication system overload, the disaster setting, disrupted transportation, and staffing impacts on normal operations. An optimal disaster notification system must have the ability to be modified to include all hazards and the unique environment in which the plan is being made. This article highlights a unique disaster staff notification system using a novel technology, an outside administrator, and a multilayer system of redundant communication...
November 2016: Journal of Emergency Management: JEM
https://www.readbyqxmd.com/read/28098265/depth-selective-photothermal-ir-spectroscopy-of-skin-potential-application-for-non-invasive-glucose-measurement
#13
Otto Hertzberg, Alexander Bauer, Arne Küderle, Miguel A Pleitez, Werner Mäntele
An infrared spectroscopic technique is described that employs a mid-IR broadband (980-1245 cm(-1)) tunable quantum cascade laser (QCL) to produce a pump beam, and a detection method based on photothermal deflection, enhanced by total internal reflection. The IR spectra thus obtained are depth-dependent by modulating the pump beam with different frequencies between 10 Hz and 500 Hz. A model system consisting of glucose and a polymer film is used to demonstrate the depth selectivity of this technique. We also apply this photothermal depth profiling method to record in vivo IR spectra of the human epidermis at different depths...
January 18, 2017: Analyst
https://www.readbyqxmd.com/read/28098252/flexible-and-wavelength-selective-mos2-phototransistors-with-monolithically-integrated-transmission-color-filters
#14
Geonwook Yoo, Sol Lea Choi, Sang Jin Park, Kyu-Tae Lee, Sanghyun Lee, Min Suk Oh, Junseok Heo, Hui Joon Park
Color-selective or wavelength-tunable capability is a crucial feature for two-dimensional (2-D) semiconducting material-based image sensor applications. Here, we report on flexible and wavelength-selective molybdenum disulfide (MoS2) phototransistors using monolithically integrated transmission Fabry-Perot (F-P) cavity filters. The fabricated multilayer MoS2 phototransistors on a polyarylate substrate exhibit decent electrical characteristics (μFE > 64.4 cm(2)/Vs, on/off ratio > 10(6)), and the integrated F-P filters, being able to cover whole visible spectrum, successfully modulate the spectral response characteristics of MoS2 phototransistors from ~495 nm (blue) to ~590 nm (amber)...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097825/signalling-pathways-involved-in-hypoxia-induced-renal-fibrosis
#15
REVIEW
Minna Liu, Xiaoxuan Ning, Rong Li, Zhen Yang, Xiaoxia Yang, Shiren Sun, Qi Qian
Renal fibrosis is the common pathological hallmark of progressive chronic kidney disease (CKD) with diverse aetiologies. Recent researches have highlighted the critical role of hypoxia during the development of renal fibrosis as a final common pathway in end-stage kidney disease (ESKD), which joints the scientist's attention recently to exploit the molecular mechanism underlying hypoxia-induced renal fibrogenesis. The scaring formation is a multilayered cellular response and involves the regulation of multiple hypoxia-inducible signalling pathways and complex interactive networks...
January 18, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28097689/investigating-magnetic-susceptibility-of-human-knee-joint-at-7-tesla
#16
Hongjiang Wei, Russell Dibb, Kyle Decker, Nian Wang, Yuyao Zhang, Xiaopeng Zong, Weili Lin, Daniel B Nissman, Chunlei Liu
PURPOSE: To evaluate the magnetic susceptibility properties of different anatomical structures within the knee joint using quantitative susceptibility mapping (QSM). METHODS: A collagen tissue model was simulated and ex vivo animal cartilage experiments were conducted at 9.4 Tesla (T) to evaluate the B0 orientation-dependent magnetic susceptibility contrast observed in cartilage. Furthermore, nine volunteers (six healthy subjects without knee pain history and three patients with known knee injury, between 29 and 58 years old) were scanned using gradient-echo acquisitions on a high-field 7T MR scanner...
January 17, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28097688/initialization-free-multilevel-states-driven-by-spin-orbit-torque-switching
#17
Kuo-Feng Huang, Ding-Shuo Wang, Ming-Han Tsai, Hsiu-Hau Lin, Chih-Huang Lai
By engineering multidomain formation in Co/Pt multilayers, it is demonstrate how multilevel storage can be achieved by spin-orbit torque switching. It is rather remarkable that, by modulating the writing pulse conditions, the final magnetization states can be controlled, independent of the initial configurations. The initialization-free multilevel memory advances the spin-orbit-torque magnetic random access memory to higher storage density for practical applications.
January 18, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28096330/spectroscopic-evidence-for-bulk-band-inversion-and-three-dimensional-massive-dirac-fermions-in-zrte5
#18
Zhi-Guo Chen, R Y Chen, R D Zhong, John Schneeloch, C Zhang, Y Huang, Fanming Qu, Rui Yu, Q Li, G D Gu, N L Wang
Three-dimensional topological insulators (3D TIs) represent states of quantum matters in which surface states are protected by time-reversal symmetry and an inversion occurs between bulk conduction and valence bands. However, the bulk-band inversion, which is intimately tied to the topologically nontrivial nature of 3D Tis, has rarely been investigated by experiments. Besides, 3D massive Dirac fermions with nearly linear band dispersions were seldom observed in TIs. Recently, a van der Waals crystal, ZrTe5, was theoretically predicted to be a TI...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28094917/tuning-the-ignition-performance-of-a-micro-chip-initiator-by-integrating-various-al-moo3-rmfs-on-a-semiconductor-bridge
#19
Jianbing Xu, Yu Tai, Chengbo Ru, Ji Dai, Yinghua Ye, Ruiqi Shen, Peng Zhu
Reactive multilayer films (RMFs) can be integrated into semiconducting electronic structures with the use of microelectromechanical systems (MEMS) technology, and represent potential applications in the advancement of microscale energy-demanding systems. In this study, aluminum/ molybdenum trioxide (Al/MoO3) -based RMFs with different modulation periods were integrated on a semiconductor bridge (SCB) using a combination of image reversal lift-off process and magnetron sputtering technology. This produced an energetic semiconductor bridge (ESCB)-chip initiator with controlled ignition performance...
January 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28094916/3d-printing-of-carbon-nanotubes-based-microsupercapacitors
#20
Wei Yu, Han Zhou, Ben Q Li, Shujiang Ding
A novel 3D printing procedure is presented for fabrication of carbon nanotubes-based microsupercapacitors. The 3D printer uses CNTs ink slurry with moderate solid content and prints continuous droplets. Appropriate control of a heated base is applied to facilitate the solvent removal and adhesion among printed features and to improve the structure integrity without delamination or distortion upon drying. The printed electrodes for microsupercapacitors are characterized by SEM, a laser scanning confocal microscope and a step profiler...
January 17, 2017: ACS Applied Materials & Interfaces
keyword
keyword
30920
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"