scholarly journals Morphology Dependent Interaction between Co(II)-tetraphenylporphyrin and the MgO(100) surface

2021 ◽  
Author(s):  
Silviya Ninova ◽  
Osman Baris Malcioglu ◽  
Philipp Auburger ◽  
Matthias Franke ◽  
Ole Lytken ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Electronic Device ◽  
Inorganic Hybrid ◽  
Wide Range ◽  
Device Properties ◽  
Dependent Interaction

Porphyrins are key elements in organic-inorganic hybrid systems for a wide range of applications. Understanding their interaction with the substrate gives a handle on structural and electronic device properties. Here...

Synthesis of Photosensitive Organic-Inorganic Hybrid Polymers via Anhydrous Sol-Gel Process for Integrated Optics

2003 ◽  
Vol 780 ◽  
Author(s):  
Xinshi Luo ◽  
Congji Zha ◽  
Barry Luther-Davies
Keyword(s):  
Low Cost ◽  
Sol Gel ◽  
Optical Loss ◽  
Hybrid Polymer ◽  
Optical Losses ◽  
Hybrid Polymers ◽  
Inorganic Hybrid ◽  
Wide Range ◽  
Integrated Optical ◽  
Sol Gel Process

AbstractPhotosensitive organic-inorganic hybrid polymers were synthesised for integrated optical and optoelectronic devices by a non-hydrous sol-gel process of hydrolysis/condensation of 3-methacryloxypropyltrimethoxysilane (MPS), diphenyldimethoxysilane (DPhDMS), and zirconium isopropoxide (TPZ) with boric acid under anhydrous conditions. The methacryl groups of MPS are UVpolymerizable, which are suitable for low cost fabrication of waveguides with a “UV write/develop” process. The incorporation of DPhDMS and TPZ was found useful in reducing the optical loss and in enhancing the thermostability of the polymer. The refractive index of the hybrid polymer is tuneable from 1.4950 to 1.5360 by variation of the ratio among MPS, DPhDMS and TPZ. Optical characterisation showed that the material has low optical losses at the telecommunications windows (0.16 dB/cm at 1310 nm and 0.4 dB/cm at 1550nm). The hybrid polymer also showed a low birefringence (1.2×10-4), a large thermo-optic (TO) coefficient (-2.77 ×10-4), and an outstanding linearity of dn/dT in a wide range of temperature (from 25 °C to 200 °C). Waveguides forming ability for the hybrid polymer with UV imprinting was also demonstrated.

scholarly journals Multimodality Imaging in the Diagnostic Work-Up of Endocarditis and Cardiac Implantable Electronic Device (CIED) Infection

2020 ◽  
Vol 9 (7) ◽  
pp. 2237
Author(s):  
Nicola Galea ◽  
Francesco Bandera ◽  
Chiara Lauri ◽  
Camillo Autore ◽  
Andrea Laghi ◽  
...  
Keyword(s):  
Clinical Decision Making ◽  
Electronic Device ◽  
Multimodality Imaging ◽  
Nuclear Imaging ◽  
Clinical Decision ◽  
Cardiac Device ◽  
Systemic Complications ◽  
Advantages And Disadvantages ◽  
Clinical Scenarios ◽  
Wide Range

Infective endocarditis (IE) is a serious cardiac condition, which includes a wide range of clinical presentations, with varying degrees of severity. The diagnosis is multifactorial and a proper characterization of disease requires the identification of the primary site of infection (usually the cardiac valve) and the search of secondary systemic complications. Early depiction of local complications or distant embolization has a great impact on patient management and prognosis, as it may induce to aggressive antibiotic treatment or, in more advanced cases, cardiac surgery. In this setting, the multimodality imaging has assumed a pivotal role in the clinical decision making and it requires the physician to be aware of the advantages and disadvantages of each imaging technique. Echocardiography is the first imaging test, but it has several limitations. Therefore, the integration with other imaging modalities (computed tomography, magnetic resonance imaging, nuclear imaging) becomes often necessary. Different strategies should be applied depending on whether the infection is suspected or already ascertained, whether located in native or prosthetic valves, in the left or right chambers, or if it involves an implanted cardiac device. In addition, detection of extracardiac IE-related lesions is crucial for a correct management and treatment. The aim of this review is to illustrate strengths and weaknesses of the various methods in the most common clinical scenarios.

New hybrid low-k dielectric materials prepared by vinylsilane polymerization

2004 ◽  
Vol 812 ◽  
Author(s):  
Jung-Won Kang ◽  
Byung Ro Kim ◽  
Gwi-Gwon Kang ◽  
Myung-Sun Moon ◽  
Bum-Gyu Choi ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Hybrid Materials ◽  
Dielectric Materials ◽  
Dielectric Constants ◽  
Good Adhesion ◽  
Inorganic Hybrid ◽  
Adhesion Promoters ◽  
Semiconductor Structures ◽  
Wide Range ◽  
Low K

AbstractSpin-on Low-K materials are potentially very attractive as interconnection materials in a wide range of semiconductor structures. In this work, new organic-inorganic hybrid materials synthesized by vinylsilane polymerization were proposed. According to compositions and additional fabrications, dielectric constants of these materials were evaluated to be 2.3∼3.1. The hardness was 2.0GPa after 430°C curing. These materials had good adhesion strength such that fracture toughness on silicon wafer was 0.22 MPam0.5 without any adhesion promoters. This result indicates that these organicinorganic hybrid materials are very promising candidates for low-K dielectrics.

Integrated bio-inorganic hybrid systems for nano-forensics

2011 ◽  
Vol 40 (2) ◽  
pp. 583-595 ◽  
Author(s):  
Jae-Min Oh ◽  
Dae-Hwan Park ◽  
Jin-Ho Choy
Keyword(s):  
Hybrid Systems ◽  
Inorganic Hybrid

scholarly journals In Situ Characterization of the Initial Effect of Water on Molecular Interactions at the Interface of Organic/Inorganic Hybrid Systems

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Sven Pletincx ◽  
Lena Trotochaud ◽  
Laura-Lynn Fockaert ◽  
Johannes M. C. Mol ◽  
Ashley R. Head ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Molecular Interactions ◽  
In Situ Characterization ◽  
Inorganic Hybrid ◽  
Effect Of Water ◽  
Initial Effect

scholarly journals The Hydro, Wind and Solar Hybrid Power Generation and Balancing Energy Supply-Demand for Seyemtribua Rural Village in Northern Ethiopia

2021 ◽  
Author(s):  
Getachew Tesfaye Gezahegn ◽  
Samuel Dagalo Hatiye ◽  
Melkamu Teshome Ayana ◽  
Abebe Temesgen Ayalew ◽  
Thomas Torora Minda
Keyword(s):  
Hybrid Systems ◽  
Hybrid System ◽  
Power Output ◽  
Optimization Techniques ◽  
Energy Resources ◽  
Northern Ethiopia ◽  
Hybrid Power ◽  
Wide Range ◽  
The Mean ◽  
The Village

Abstract Background:Ethiopia has a wide range of renewable energy resources for the electrification of rural areas which are often disconnected from the national grid. However, these have not yet been utilized for supplying energy to the rural community. Methods:The techno-economic viability of the hydro, wind, and solar hybrid power potential of Seyemtribua village in the Geba Catchment, Northern Ethiopia was evaluated using the Hybrid Optimization Model for Multiple Energy Resources (HOMER) software package. The hydrologic, meteorological, and demographic data collected from different sources were contemplated to analyze the power output and demand of the village. The simulation and optimization techniques in HOMER were employed for the possible configuration of micro-hydro, wind, and solar power hybrid systems. Besides the standalone, two and more systems were also combined to evaluate the technical capability of the hybrid system. The hourly and daily electrical load of the community was obtained using survey data from selected households.Results:The mean annual power output that can be harnessed from the micro-hydro, solar, and wind is 272.4 kilowat, 161.8 kilowat, and 96.8 kilowat, respectively. The combination of these energy sources is sufficient to satisfy the power demand of the village. However, the mean hourly variation of power output from the hybrid system demonstrated shortage during peak load times which can be assisted by a generator output. The economic analysis revealed that the hybrid system is feasible and cheaper than other sources of energy besides its environmental benefit.Conclusions: The potential of energy production from hybrid systems (solar, wind and micro-hydro power systems) and its economic feasibility for remotely located villages in Ethiopian condition is promising. We suggest decision-makers, governmental and non-governmental agencies, power authorities, and investors consider such hybrid systems for rural electrification in Ethiopia.

scholarly journals Memristors With Controllable Data Volatility by Loading Metal Ion-Added Ionic Liquids

2021 ◽  
Vol 3 ◽  
Author(s):  
Hiroshi Sato ◽  
Hisashi Shima ◽  
Toshiki Nokami ◽  
Toshiyuki Itoh ◽  
Yusei Honma ◽  
...  
Keyword(s):  
Metal Ion ◽  
Electronic Device ◽  
Material Design ◽  
Device Fabrication ◽  
Corrosion Mechanism ◽  
Data Retention ◽  
Resistance Change ◽  
Device Resistance ◽  
Wide Range ◽  
Retention Characteristics

We demonstrate a new memristive device (IL-Memristor), in which an ionic liquid (IL) serve as a material to control the volatility of the resistance. ILs are ultra-low vapor pressure liquids consisting of cations and anions at room temperature, and their introduction into solid-state processes can provide new avenues in electronic device fabrication. Because the device resistance change in IL-Memristor is governed by a Cu filament formation/rupture in IL, we considered that the Cu filament stability affects the data retention characteristics. Therefore, we controlled the data retention time by clarifying the corrosion mechanism and performing the IL material design based on the results. It was found out that the corrosion of Cu filaments in the IL was ruled by the comproportionation reaction, and that the data retention characteristics of the devices varied depending on the valence of Cu ions added to the IL. Actually, IL-Memristors involving Cu(II) and Cu(I) show volatile and non-volatile nature with respect to the programmed resistance value, respectively. Our results showed that data volatility can be controlled through the metal ion species added to the IL. The present work indicates that IL-memristor is suitable for unique applications such as artificial neuron with tunable fading characteristics that is applicable to phenomena with a wide range of timescale.

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