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Recent Patents on Nanotechnology

Yuzheng Lua, Muhammad Afzal, Bin Zhu, Baoyuan Wang, Jun Wang, Chen Xia
Nanocomposites (integrating the nano and composite technologies) for advanced fuel cells (NANOCOFC) demonstrate the great potential to reduce the operational temperature of solid oxide fuel cell (SOFC) significantly in the low temperature (LT) range 300-600ºC. NANOCOFC has offered the development of multi-functional materials composed of semiconductor and ionic materials to meet the requirements of low temperature solid oxide fuel cell (LTSOFC) and green energy conversion devices with their unique mechanisms...
November 6, 2016: Recent Patents on Nanotechnology
Joonwon Bae, Chang-Soo Lee, Oh Seok Kwon
Graphene (GRP) is an interesting class of nano-structured electronic materials for various cutting-edge applications. To date, extensive research activities have been performed on the investigation of diverse properties of GRP. The incorporation of this elegant material can be very lucrative in terms of practical applications in energy storage/conversion systems. Among various those systems, high performance electrochemical capacitors (ECs) have become popular due to the recent need for energy efficient and portable devices...
October 27, 2016: Recent Patents on Nanotechnology
So-Won Choi, Tae-Ho Kim, Sang-Ho Cha
Vanadium redox flow batteries (VRFBs) have received considerable attention as large-scale electrochemical energy storage systems. In particular, VRFBs offer a higher power and energy density than other RFBs and mitigate undesirable performance fading, such as inevitable ion crossover, because of the unique advantage that only the vanadium ion is employed as the active species in the two electrolytes. The key constituent of VRFBs is a separator to conduct protons and prevent cross-mixing of the positive and negative electrolytes...
October 27, 2016: Recent Patents on Nanotechnology
Tahseen Kamal, Nauman Ali, Abbas A Naseem, Sher B Khan, Abdullah M Asiri
Fouling refers to the unwanted and undesirable attachment of biological macromolecules, inorganic, organic matter, and microorganisms on water contact surfaces. Fouling reduces the performance of devices involving these submerged surfaces and is considered the bottle-neck issue for various applications in the bio-medical industry, food processing, and water treatment, especially in reverse osmo-sis (RO) desalination. Investigations have proven that nanocomposite membranes can exhibit enhanced antifouling performances and can be used for longer life times...
October 25, 2016: Recent Patents on Nanotechnology
Sher Bahader Khan, Shahid Ali Khan, Tahseen Kamal, Abdullah M Asiri, Kalsoom Akhtar
BACKGROUND: Potable, clean and safe water is the basic need for all human beings. Major portion of the earth is occupied by water, however, this is contaminated by rapid industrialization, improper sewage and natural calamities and man-made activates, which produce several water-borne and fetal diseases. In this review we presented some recent patent for environmental remediation. METHODS: Various technologies have been developed for the treatment of waste water consist of chemical, membrane, filtration, sedimentation, chlorination, disinfection, electrodialysis, electrolysis, reverse osmosis and adsorption...
October 25, 2016: Recent Patents on Nanotechnology
Farman Ali, Shaukat Saeed, Syed Sakhawat Shah, Fazal Rahim, Laurent Duclaux, Jean-Marc Levêque, Laurence Reinert
BACKGROUND: Sulfonated polyimides (SPIs) are considered as the promising alternatives to Nafion as membrane materials for the polymer electrolyte membrane (PEM). They generally exhibit high ionic conductivity, good mechanical properties, excellent thermal and chemical stabilities. The six-membered ring, naphthalenic anhydride-based SPIs, not only exhibit superior chemical and thermo-oxidative stabilities but are also more resistant to hydrolysis than their five-membered phthalic anhydride-based SPIs...
October 25, 2016: Recent Patents on Nanotechnology
Bushra Ismail, Muhammad Muneeb, Tanzeela Fazal, Abdur Rehman Khan, Mehwish Afzia
BACKGROUND: The current article is about the water treatment in which colored water contaminated by methyl orange has been used for adsorption assisted photocatalysis. Coupling of photocatalysis with the traditional water treatment processes has been in practice since last couple of years for the improvement of degradation efficiencies, for example, photocatalysis coupled with ultrafilteration, adsorption, flocculation, biological methods, photolysis, membrane distillation, etc. Among all these coupling approaches, adsorption assisted photocatalysis being a very simple and highly efficient approach is suffering from few drawbacks on the account of high cost, low stability and surface area of the adsorbent support...
October 25, 2016: Recent Patents on Nanotechnology
Lassaad Gzara, Zulfiqar Ahmad Rehan, Sher Bahadar Khan, Khalid A Alamry, Mohammad Soror El-Shahawi, Mohammad H Albeirutty, Alberto Figoli, Enrico Drioli, Abdullah M Asiri
BACKGROUND: The membrane processes are interesting and economical techniques for reuse of municipal and industrial wastewater as well as seawater desalination. However their drawbacks can be resumed in the fouling and biofouling due to the deposition and adsorption phenomenon of the components and the development of biofilm on membrane surface. Several studies have focused on the effect of the incorporation of nanoparticles in polymeric membrane matrix on the biofouling properties. Few relevant patents to the topic have been reviewed and cited...
October 25, 2016: Recent Patents on Nanotechnology
Mazhar Ul-Islam, Frederick Claessyns, Stephen Rimmer, Muhammad Balal Arain, Aref Wazwaz, Touseef Rehan, Nasrullah Shah, Mohammad Wasi Ahmad
BACKGROUND: Affordable and efficient water treatment process to produce water free from various contaminants is a big challenge. The presence of toxic heavy metals, dyes, hazardous chemicals and other toxins causes contamination of water sources and our food chain and make them hazardous to living organisms. The current water treatment processes are no longer sustainable due to high cost and low efficiency. Due to advantageous properties, nanotechnology based materials can play a great role in increasing the efficiency of water treatment processes...
October 24, 2016: Recent Patents on Nanotechnology
Joong Kon Park, Mazhar Ul-Islam, Muhammad Wajid Ullah, Shaukat Khan, Tahseen Kamal, Salman Ul-Islam, Nasrullah Shah
BACKGROUND: Cellulose being the most abundant polymer has been widely utilized in multiple applications. Its impressive nanofibril arrangement has provoked its applications in numerous fields. Recent trends have been shifted to produce composites of nanocellulose for numerous applications among which the most important ones are its use in medical and environmental prospective. This review has basically focused the development of nanocellulose composites and its applications in resolving environmental hazards...
October 18, 2016: Recent Patents on Nanotechnology
Shreya Thakkar, Viral Shah, Manju Misra, Kiran Kalia
BACKGROUND: Most of the chemical substances which emerge out as potential drug candidates (Active Pharmaceutical Ingredients) are either weak acids or weak bases. Poor aqueous solubility of these drug substances is a common concern. Several R&D centers are focused on developing suitable, economic, simpler and more feasible solubility enhancement techniques for increasing the solubility and thereby bioavailability of such drug substances. Nanocrystals is one of the preferred approaches for solubility enhancement in last few decades...
October 14, 2016: Recent Patents on Nanotechnology
H -Y He
This work presents the manufacture and potential application of the ZnO materials with various cation dopings in recent literature and patents and then focus on La codoping effects of Al-doped ZnO films were studied. The films were deposited by a chemical solution deposition and characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, UV-vis and luminescent spectrophotometries, and electrical measurement. The films showed nanoscale particle size increased as the increase in La/Al ratio...
September 29, 2016: Recent Patents on Nanotechnology
Lei Wang, Sidi Gong, Cihui Yang, Jing Wen
A theoretical model has been previously proposed to optimize the structure of the electrical probe memory system, whereby the optimal thickness and resistivity of DLC capping layer and TiN under layer are predicted to be 2 nm, 0.01 Ω× m, and 40 nm, 2×10-7 Ω× m, respectively. However, there is no experimental evidence to show that such a media stack can be fabricated in reality by the time of writing. In order to realize this optimized design experimentally, the thickness dependent resistivity for both DLC and TiN film are assessed, from which it is not possible to obtain a media stack with exactly the same properties as the optimized design...
August 23, 2016: Recent Patents on Nanotechnology
Benjamin Tien-Hsi Lee, C-C Chiang
BACKGROUND: A hydrogen-based Ion-Cut layer-transfer technique, the so-called Ion-Cut or Smart-Cut processing, has been used in transferring a semiconductor membrane onto a desired substrate to reveal unique characteristics on a nanoscale size and to build functional electronic and photonic devices that are used for specific purposes. For example, the sub-100 nm thick silicon membrane transferred onto an insulator became a key substrate for fabricating nanoscale integrated circuit (IC) devices...
August 16, 2016: Recent Patents on Nanotechnology
Lei Wang, Si-Di Gong, Ci Hui Yang, Jing Wen
We investigate the resonant frequency and the frequency tuneability of the nanowire-based nanoelectromechanical system using Ge2Sb2Te5 media. By varying the nanowire dimensions, corresponding resonant frequencies and frequency tuneability are calculated using an established mechanical model. We also demonstrate the practicality of tuning resonant frequency of the designed system with the aid of the electro-thermal simulation. The nanowire-based device using Ge2Sb2Te5 media enables a very high resonant frequency and an ultra-large adjustable bandwidth as well as the advantages inherited from phase-change memories...
July 28, 2016: Recent Patents on Nanotechnology
R Mala, A S Ruby Celsia, S Vidhya Bharathi, S Raja Blessina, Uma Maheswari
BACKGROUND: The excessive use of fertilizers and pesticides has distorted soil composition, fertility and integ-rity with relevant and non-desirable environmental and ecological consequences. A strategy was designed to prepare a nano structured slow release fertilizer system that delivers nutrients and plant growth promoting Rhizobacteria simultaneously. Slow release nano phosphate and potash fertilizer was prepared by blending the nano emulsion of fertilizer with neem cake and PGPR. METHODS: The influence of nano structured slow release fertilizer on the biochemical characteristics, soil and yield attributes of Vigna radiata was studied in the field by randomized block design...
July 26, 2016: Recent Patents on Nanotechnology
Roozbeh Abedini-Nassab
DNA sequencing is one of the crucially important tasks in the fields of genetics and cellular biology, which is benefiting from nanotechnology. DNA carries genetic information and sequencing it in a quick way helps researchers in achieving essential goals, including personalized medicine. Solid state nanopores potentially can offer more durability, in sequencing biomolecules, over the protein-based nanopores. In recent years, various ideas are introduced towards the goal of fast and low cost sequencing. In this review article recent advances in this field, including sequencing methods, membrane materials and their fabrication techniques, drilling methods, and biomolecule translocation speed control ideas are investigated...
June 2, 2016: Recent Patents on Nanotechnology
Lei Lei, Don Bergstrom, Bing Zhang, Hongbo Zhang, Ruixue Yin, Ki-Young Song, Wenjun Zhang
This review focuses on the fundamental fluid mechanics which governs the generation of micro/nanospheres. The micro/nanosphere generation process has gathered significant attention in the past two decades, since micro/nanospheres are widely used in drug delivery, food science, cosmetics, and other application areas. Many methods have been developed based on different operating principles, such as microfluidic methods, electrospray methods, chemical methods, and so forth. This paper focuses on microfluidic methods...
May 30, 2016: Recent Patents on Nanotechnology
L F Al-Badry, S A A Al-Saidi, F N Ajeel
We study electronic transport through normal metal mesoscopic rings have one dimension, and suggest how such rings can be employed to design nanoscale AND gate. A double mesoscopic ring is utilized for AND gate operation, every ring is threaded by magnetic flux, the magnetic flux considered as the key tuning parameter in the AND gate action. At magnetic flux is equal to the half flux quantum, a logical AND gate like response is observed, depending on the applied gate voltage. Two gate voltages are externally applied to the lower arm of every ring, which acted as the two inputs of the AND gate...
May 30, 2016: Recent Patents on Nanotechnology
Evando S Araújo, Eugênia C Pereira, Mateus M da Costa, Nicácio H da Silva, Helinando P de Oliveira
Usnic acid has been progressively reported in the literature as one of the most important lichen metabolite characterized by a rich diversity of applications such as antifungal, antimicrobial, antiprotozoal and antiviral agent. Particularly, antimicrobial activity of usnic acid can be improved by encapsulation of active molecules in enteric electrospun fibers, allowing the controlled release of active molecule at specific pH. In this work, we have explored the bactericidal activity of usnic acid-loaded electrospun fibers of Eudragit L-100 and polyvinylpyrrolidone against Staphylococcus aureus...
May 17, 2016: Recent Patents on Nanotechnology
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