bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fabrication,Transport and Raman Studies of Pulsed Laser Deposited Al/Ga Doped PBCO Thin Films
Authors: Kandel Hom R , Chen Tar-Pin , Seo Hye-Won , Iliev Milko , Wadekar Paritosh , Cui Jing-Biao , wang Shouzheng , Watanabe Fumiya , Chen Quark , Li Zhongrui , Yuan Lixi , Norman Dever 
Published: January 2010

AbstractWe have fabricated highly resistive materials PrBa2 (Cu1-xMx) 3O7 (M=Al, Ga, x = 0.20) by doping metals Ga and Al on PrBa2Cu3O7(PBCO). X-ray data indicated no significant second phases in substituting Cu by Al or Ga up to 20%.The electrical resistivity of these materials were three to four orders in magnitude higher than PBCO at 200K, which may give an effective potential barrier to YBCO in high Tc S-I-S Josephson junction. Epitaxial thin films of these materials were grown using KrF excimer laser on LAO (110) single crystal substrates. X-ray diffraction (XRD) and atomic force microscopy (AFM) were deployed to study the crystal orientation, epitaxy and roughness of the single crystal thin films. Micro Raman spectroscopy was carried out to investigate the dopant site in PBCO.
In-Situ Measurement of Actuation in Thin Films of Conducting Polymers
Authors: Montemayor Lauren C. , Pillai Priam Vasudevan , Hunter Ian W 
Published: January 2010

AbstractConducting polymer materials can be developed as muscle-like actuators for applications in robotics, micro-electro mechanical systems, drug delivery systems etc. These materials are available in a large number of different varieties that can be synthesized and processed in different ways. However, their applications as actuators are limited due to the inability to create conducting polymer materials with robust mechanical properties. Currently most of the dynamic mechanical analysis technologies require the polymer created to be free standing and able to withstand large stresses. This severely limits the development of new materials with potential actuator applications. In this study, a technique to measure the actuation of polymers in the electrochemical deposition environment is described. This allows testing of an electrochemically grown conducting polymer sample on the surface of the deposition electrode itself. Thin polypyrrole films (2 to 20 microns thick) doped with tetraethylammonium hexaflourophosphate were grown on the surface of a glassy carbon electrode. These films were then tested on the surface of the glassy carbon using a custom built electrochemical dynamic mechanical analyzer. A square wave potential (+/- 0.8 V) is applied to the films that results in the actuation of the films. The films are able to generate a changing force of 3 mN of force against a 0.1 N sensor preloaded at 5 mN. The resulting magnitude of the measured force is a function of the film thickness while the change in force due to actuation is approximately constant.
Piezoresistive Cantilever Optimization and Applications
Authors: Doll Joseph C. , Park Sung-Jin , Harjee Nahid , Rastegar Ali J. , Mallon Joseph R. , Petzold Bryan C. , Hill Ginel C. , Barlian A. Alvin , Pruitt Beth 
Published: January 2010

AbstractPiezoresistors are commonly used in microsystems for transducing force, displacement, pressure and acceleration. Silicon piezoresistors can be fabricated using ion implantation, diffusion or epitaxy and are widely used for their low cost and electronic readout. However, the design of piezoresistive cantilevers is complicated by coupling between design parameters as well as fabrication and application constraints. Here we discuss analytical models and design optimization for piezoresistive cantilevers, and describe several applications ranging from studying electron movement using scanning gate microscopy to measuring the biomechanics of whole organisms.
Microwave Absorbing Ferrite Thin Films for Microwave Heating of Microstructured Reactors
Authors: Gao Pengzhao , Rebrov Evgeny V. , Schouten Jaap C. , Kleismit Richard , Cetnar John , Subramanyam Guru , Kozlowski Gregory 
Published: January 2010

AbstractNanocrystalline Ni0.5Zn0.5Fe2O4 thin films have been synthesized with various grain sizes by sol–gel method on polycrystalline silicon substrates. The morphology and microwave absorption properties of the films calcined in the 673–1073 K range were studied by using XRD, AFM, near–field evanescent microwave microscopy, coplanar waveguide and direct microwave heating measurements. All films were uniform without microcracks. The increase of the calcination temperature from 873 to 1073 K and time from 1 to 3h resulted in an increase of the grain size from 12 to 27 nm. The complex permittivity of the Ni-Zn ferrite films was measured in the frequency range of 2–15 GHz. The heating behavior was studied in a multimode microwave cavity at 2.4 GHz. The highest microwave heating rate in the temperature range of 315–355 K was observed in the film close to the critical grain size of 21 nm in diameter marked by the transition from single– to multi–domain structure of nanocrystals in Ni0.5Zn0.5Fe2O4 film and by a maximum in its coercivity.
Deposition Profile Control of Carbon Films on Patterned Substrates using a Hydrogen-assited Plasma CVD Method
Authors: Nomura Takuya , Koga Kazunori , Shiratani Masaharu , Setsuhara Yuichi , Sekine Makoto , Hori Masaru 
Published: January 2010

AbstractWe have studied effects of H atom source on deposition profiles of carbon films, deposited by H assisted anisotropic plasma CVD method. Deposition rate normalized by that for the aspect ratio of 1 at sidewall and bottom decreases with increasing discharge power of H atom source from 0 W to 500 W, because the incident H atom flux per surface area in a trench increases and H atoms etch carbon films.
Fabrication of Microfluidic Devices in Thermoplastic Elastomeric Materials for DNA Detection on Thermal Plastic Substrate
Authors: Li Kebin , Brassard Daniel , Normandin François , Miville-Godin Caroline , Geissler Matthias , Roy Emmanuel , Veres Teodor 
Published: January 2010

AbstractThermoplastic elastomer (TPE) based microfluidic devices integrated with a microfluidic pumping manifold which consists of 4 electromagnetic valves (EMV) were fabricated. The back and forth shuttling flow and its application in the DNA hybridization process were validated on a thermal plastic Zeonor 1060R substrate. The flow rate can be as fast as 23μl/min when the channel width and the channel height are in 100μm, and 25μm, respectively. The DNA hybridization process is detected by using a fluorescence microscopy. Remarkable DNA hybridization is achieved with the continuous flow of the target DNA at a concentration of 10 nM within the first 1 min by using this device.
Indentation Crystal Plasticity: Experiments and Multiscale Simulations
Authors: Chang Hyung Jun , Fivel Marc , Verdier Marc 
Published: January 2010

AbstractThis work aims at a quantitative simulation of instrumented indentation test based on physics of crystal plasticity. Indentation loading is associated with a complex 3D deformation path: it can be viewed as an ideal benchmark to test various crystal plasticity assumptions. For large scale indentation (micron size), a 3D numerical simulation using finite element crystal plasticity (FEM) is setup and quantitatively compared to experimental results using critical constraints: the load/stiffness-displacement curves and the surface displacements. Various set of parameters obtained from Dislocation Dynamics (DD) are used. A comparison with experiments shows the dominant effect of initial dislocation density and slip system interactions.
For smaller depth (maximum 100 nm), Dislocation Dynamics coupled simulations to FEM are setup. Since this approach does not provide defect nucleation rules, several strategies are implemented and tested: fitting to Molecular Dynamics (MD) load-depth curve for spherical tip, or automatic generation of deformation accommodating dislocation (GND) for conical tip geometry for example. In this framework, size effects show up in the modification of the dislocation structures with depth through critical expansion of dislocation loops and junction formation.
Development of a Biaxial Tensile Module at Synchrotron Beamline for the Study of Mechanical Properties of Nanostructured Films
Authors: Le Bourhis Eric , Girault Baptiste , Renault Pierre-Olivier , Goudeau Philippe , Geandier Guillaume , Thiaudière Dominique , Randriamazaoro Rado N , Chiron Rémy , Faurie Damien , Castelnau Olivier 
Published: January 2010

AbstractWe have developed on the DIFFABS-SOLEIL beamline a biaxial tensile machine with synchrotron standard for in-situ diffraction characterization of thin polycrystalline metallic film mechanical response. The machine has been designed to test cruciform substrates coated by the studied film under controlled applied strain field. Technological challenges comprise the fixation of the substrate, the generation of a uniform strain field in the studied (central) volume, the operations from the beamline pilot. Tests on W and W/Cu multilayers films deposited on polyimide substrates are presented.
One Step Nano-Selective Area Growth of Localized InAs/InP Quantum Dots For Single Photon Source Applications
Authors: Gogneau Noelle , Le Gratiet Luc , Hostein Richard , Fain Bruno , Largeau Ludovic , Patriarche Gilles , Beaudoin Gregoire , Elvira David , Beveratos Alexios , Robert Isabelle , Sagnes Isabelle 
Published: January 2010

AbstractWe demonstrate the feasibility of a new approach of Nano Selective Area Growth (Nano-SAG) to precisely localize InAs/InP QDs, by low-pressure Metalorganic Vapour Phase Epitaxy (MOVPE). This approach is based on a partial patterning with a dielectric mask containing nano-openings. The two main advantages of MOVPE are: the important diffusion length of the active species and the inhibition of growth on the dielectric mask. We demonstrate the synthesis of localized nanostructures with high structural properties and the precise control of their dimensions at the nanometer scale. This allows in principle the precise control of the tunability of the emission length.
Monte Carlo Modelisation of Photoexcited Carriers Relaxation Including Auger Effect in Narrow Band Gap InGaAs
Authors: Tea Eric , Aniel Frederic 
Published: January 2010

AbstractThe Auger effect is one of the fastest recombination mechanisms in narrow band gap semiconductors at high carrier concentration. This regime is of great interest for high efficiency hot carrier solar cells application and is also involed in many optical devices. Therefore, the knowledge of this limitting process is required for the determination of carrier lifetime useful to accurate solar cell efficiency calculations. For the first time, we present a carrier lifetime study versus carrier concentration in InGaAs based on a Monte Carlo model where the Auger effect is included as a relaxation mecanism.
A New Bio-Inorganic Nanocomposite Membrane for Glucose-Modulated Release of Insulin
Authors: Gordijo Claudia Regina , Shuhendler Adam Jason , Wu Xiao Yu 
Published: January 2010

AbstractThis work focuses on the development of a new bio-inorganic nanocomposite glucose-responsive membrane to be applied as a single self-regulated platform for insulin delivery. Crosslinked bovine serum albumin (BSA)-based membranes were prepared containing impregnated pH-responsive poly(N-isopropyl acrylamide-co-methacrylic acid) nanoparticles (hydrogel NPs), glucose oxidase (GOx), catalase (CAT), with or without MnO2 NPs. The membrane acts as a glucose sensor and insulin release attenuator. In this system glucose is oxidized by GOx to produce gluconic acid, which regulates the permeability of the membrane to insulin. CAT and/or MnO2 NPs are introduced into the membrane in order to quench unwanted H2O2 produced by GOx turnover cycles, which can cause inactivation of GOx and toxicity. The glucose-modulated insulin release through the membrane is determined by alternating glucose concentration between 100 – 400 mg/dL (normal and hyperglycemic levels, respectively). The results show that the combination of CAT and MnO2 NPs in the membrane formulation leads to better efficiency in quenching the H2O2 and better long-term stability of GOx than using either alone. Very small amounts of insulin permeate though the membrane at the normal blood glucose level while a four-fold increase in the release rate is observed when glucose concentration is raised to a hyperglycemic level. The release rate of insulin drops when the glucose level is reduced to a normal value. These results demonstrate the self-regulated capability of the system.
Thermosensitive Core-Shell Microgel as a “Nanoreactor” for Metal Nanoparticles
Authors: Lu Yan , Ballauff Matthias 
Published: January 2010

AbstractIn our study, thermosensitive core-shell microgel particles have been used as the carrier system for the deposition of metal nanoparticles, in which the core consists of polystyrene (PS) whereas the shell consists of poly(N-isopropylacrylamide) (PNIPA) network crosslinked by N, N'-methylenebisacrylamide (BIS). Silver, gold and palladium nanoparticles have been homogeneously embedded into thermosensitive PNIPA-networks, respectively. We demonstrate that the catalytic activity of the microgel-metal nanocomposites can be tuned by the volume transition within the microgel of these systems by using the catalytic reduction of 4-nitrophenol as the model reaction. Moreover, following the concept of a “green chemistry”, the oxidation of alcohols to the corresponding aldehydes or ketones can be carried out in aqueous solution under aerobic conditions at room temperature by using microgel-metal nanocomposites as the catalyst. The influence of temperature on the catalytic activity has been also investigated, which will be affected both by the volume transition of the microgel and by the change of polarity of the microgel in this case.
Islam, Muslims and Arabs in the Popular Hollywood Cinema
Authors: Kozlovic Anton Karl 
Published: January 2010

This is the age of Hollywood, yet, the pedagogic utilisation of popular films as a legitimate extra-ecclesiastical resource for the study of religion is frequently ignored, unappreciated or under-utilised. To thrive in the post-Millennial period, however, the religion professions need to integrate movies proactively into the educational curricula that go beyond their traditional deployment as visual aides, diversionary entertainment or student pacification. Applied cinema studies can thus contribute significantly to interreligious understanding, cooperation and peace-building, particularly the exposition of the many anti-Islamic messages embedded within the films of the West. Using textually based, humanist film criticism as the guiding analytical lens, the critical literature was reviewed and the popular Hollywood cinema scanned to reveal selected (mis-)representations of Islam, Muslims and Arabic culture in general. Both deconstructive and constructive issues were addressed. It was argued that: (a) the Hollywood hermeneutic is a viable pedagogic resource for the classroom, home and pulpit, (b) popular films can be profitably employed as a legitimate mode of interreligious dialogue, and (c) Islamic sacred subtexts should be constructed
to spread the message of God further afield. Additional research into
the emerging interdisciplinary field of religion-and-film was recommended.
The Macro Dimensions of Chile's Export Dilemma
Authors: Arroyo Francisco , Edmunds John C. 
Published: January 2010

The success of Chile's economy in the past decades is relevant to the efforts of other emerging countries to achieve rapid economic growth. One of Chile's main accomplishments has been a steady increase in exports. The increase was in physical volume of exports, not in unit value. This increase was the result of a correct strategy of opening the economy, which permitted the more competitive Chilean businesses to access external markets. This strategy may be reaching a point of diminishing returns, so the dilemma that Chile now faces is relevant to other emerging countries as they try to grow their economies rapidly. To achieve significant further growth in the long run, Chile needs to move into new kinds of business opportunities, in categories and areas where it has not established a foothold. To break into these new areas, Chile has to develop new capabilities and new strategies. The old way of growing the economy is running into constraints. The data is about Chile's wood products export industry, which is the country's most successful in terms of adding value as measured by macro metrics. That export industry is not as well known as Chile's wine and fresh fruit export industries but has a more impressive record. The firms in Chile's wood export industry, despite being successful in increasing the dollar value of products exported, have not been able to make themselves competitive in stages of wood production beyond basic and repetitive processes. Other emerging countries are facing the same challenge. Chilean wood products exporting firms in Chile have been slow to respond to signals from the market. They have not been able to achieve high standards of quality or precision, and they have worked only with local raw materials. These firms have attempted to export manufactured products, but these attempts have failed. For those reasons many observers argue that the advantage in the market that these firms enjoy is due to superior endowments of natural resources rather than to corporate strategies. High raw material prices have not triggered a new chapter in this history. On the contrary, this comfortable situation has lulled the country into complacency. Other countries were in the same comfortable situation and now the financial crisis has intervened. Chile's present slow growth is discouraging but might prod the country to achieve greater sophistication in exporting goods and services.
Unacylated Ghrelin Rescues Endothelial Progenitor Cell Function in Individuals With Type 2 Diabetes
Authors: Togliatto Gabriele , Trombetta Antonella , Dentelli Patrizia , Baragli Alessandra , Rosso Arturo , Granata Riccarda , Ghigo Dario , Pegoraro Luigi , Ghigo Ezio , Brizzi Maria Felice 
Published: January 2010

OBJECTIVE
Acylated ghrelin (AG) is a diabetogenic and orexigenic gastric polypeptide. These properties are not shared by the most abundant circulating form, which is unacylated (UAG). An altered UAG/AG profile together with an impairment of circulating endothelial progenitor cell (EPC) bioavailability were found in diabetes. Based on previous evidence for the beneficial cardiovascular effects of AG and UAG, we investigated their potential to revert diabetes-associated defects.

RESEARCH DESIGN AND METHODS
Healthy human subjects, individuals with type 2 diabetes, and ob/ob mice were AG or UAG infused. EPC mobilization in patients and mice was evaluated, and the underlying molecular mechanisms were investigated in bone marrow stromal cells. Recovered EPCs were also evaluated for the activity of senescence regulatory pathways and for NADPH oxidase activation by knocking down p47phox and Rac1. Finally, UAG modulation of human EPC vasculogenic potential was investigated in an in vivo mouse model.

RESULTS
Neither AG nor UAG had any effect in healthy subjects. However, systemic administration of UAG, but not AG, prevented diabetes-induced EPC damage by modulating the NADPH oxidase regulatory protein Rac1 and improved the vasculogenic potential both in individuals with type 2 diabetes and in ob/ob mice. In addition, unlike AG, UAG facilitated the recovery of bone marrow EPC mobilization. Crucial to EPC mobilization by UAG was the rescue of endothelial NO synthase (eNOS) phosphorylation by Akt, as UAG treatment was ineffective in eNOS knockout mice. Consistently, EPCs expressed specific UAG-binding sites, not recognized by AG.

CONCLUSIONS
These data provide the rationale for clinical applications of UAG in pathologic settings where AG fails.
Phagocytosis of Enterovirus-Infected Pancreatic β-Cells Triggers Innate Immune Responses in Human Dendritic Cells
Authors: Schulte Barbara M. , Kramer Matthijs , Ansems Marleen , Lanke Kjerstin H.W. , van Doremalen Neeltje , Piganelli Jon D. , Bottino Rita , Trucco Massimo , Galama Jochem M.D. , Adema Gosse J. , van Kuppeveld Frank J.M. 
Published: January 2010

OBJECTIVEType 1 diabetes is a chronic endocrine disorder in which enteroviruses, such as coxsackie B viruses and echoviruses, are possible environmental factors that can trigger or accelerate disease. The development or acceleration of type 1 diabetes depends on the balance between autoreactive effector T-cells and regulatory T-cells. This balance is particularly influenced by dendritic cells (DCs). The goal of this study was to investigate the interaction between enterovirus-infected human pancreatic islets and human DCs.RESEARCH DESIGN AND METHODSIn vitro phagocytosis of human or porcine primary islets or Min6 mouse insuloma cells by DCs was investigated by flow cytometry and confocal analysis. Subsequent innate DC responses were monitored by quantitative PCR and Western blotting of interferon-stimulated genes (ISGs).RESULTSIn this study, we show that both mock- and coxsackievirus B3 (CVB3)-infected human and porcine pancreatic islets were efficiently phagocytosed by human monocyte–derived DCs. Phagocytosis of CVB3-infected, but not mock-infected, human and porcine islets resulted in induction of ISGs in DCs, including the retinoic acid–inducible gene (RIG)-I–like helicases (RLHs), RIG-I, and melanoma differentiation–associated gene 5 (Mda5). Studies with murine Min6 insuloma cells, which were also efficiently phagocytosed, revealed that increased ISG expression in DCs upon encountering CVB-infected cells resulted in an antiviral state that protected DCs from subsequent enterovirus infection. The observed innate antiviral responses depended on RNA within the phagocytosed cells, required endosomal acidification, and were type I interferon dependent.CONCLUSIONSHuman DCs can phagocytose enterovirus-infected pancreatic cells and subsequently induce innate antiviral responses, such as induction of RLHs. These responses may have important consequences for immune homeostasis in vivo and may play a role in the etiology of type 1 diabetes.