keyword
MENU ▼
Read by QxMD icon Read
search

Nanoengineering

keyword
https://www.readbyqxmd.com/read/28335249/plasma-nanoengineering-and-nanofabrication
#1
EDITORIAL
Krasimir Vasilev, Melanie Macgregor Ramiasa
With the recent advances in nanotechnology, plasma nanofabrication has become an exciting new niche because plasma-based approaches can deliver unique structures at the nanoscale that cannot be achieved by other techniques and/or in a more economical and environmentally friendly manner.[...].
June 23, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28301732/nanoengineering-heterogeneous-catalysts-by-atomic-layer-deposition
#2
Joseph A Singh, Nuoya Yang, Stacey F Bent
A new generation of catalysts is needed to meet society's energy and resource requirements. Current catalyst synthesis does not fully achieve optimum control of composition, size, and structure. Atomic layer deposition (ALD) is an emerging technique that allows synthesizing of highly controlled catalysts in the forms of films, nanoparticles, and single sites. The addition of ALD coatings can also be used to introduce promoters and improve the stability of traditional catalysts. Evolving research shows promise for applying ALD to understand catalytically active sites and create next-generation catalysts using advanced 3D nanostructures...
February 27, 2017: Annual Review of Chemical and Biomolecular Engineering
https://www.readbyqxmd.com/read/28291321/nanoengineered-superhydrophobic-surfaces-of-aluminum-with-extremely-low-bacterial-adhesivity
#3
Ferdi Hizal, Natthakan Rungraeng, Junghoon Lee, Soojin Jun, Henk J Busscher, Henny C van der Mei, Chang-Hwan Choi
Bacterial adhesion and biofilm formation on surfaces are troublesome in many industrial processes. Here, nanoporous and nanopillared aluminum surfaces were engineered by anodizing and postetching processes and made hydrophilic (using the inherent oxide layer) or hydrophobic (applying a Teflon coating) with the aim of discouraging bacterial adhesion. Adhesion of Staphylococcus aureus ATCC 12600 (Gram-positive, spherically shaped) and Escherichia coli K-12 (Gram-negative, rod-shaped) was evaluated to the nanoengineered surfaces under both static and flow conditions (fluid shear rate of 37 s(-1))...
March 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28277651/nanoengineering-of-core-shell-magnetic-mesoporous-microspheres-with-tunable-surface-roughness
#4
Qin Yue, Yu Zhang, Yongjian Jiang, Jialuo Li, Hongwei Zhang, Chengzhong Yu, Ahmed A Elzatahry, Abdulaziz Alghamdi, Yonghui Deng, Dongyuan Zhao
Functional core-shell mesoporous microspheres with integrated functions, controlled structure, and surface properties and morphologies have received increasing attention due to their excellent physicochemical properties. Herein, core-shell magnetic mesoporous materials with cauliflower-like morphology and tunable surface roughness have been synthesized through a kinetics-controlled interface co-assembly and deposition of mesostructured nanocomposites on Fe3O4@RF microspheres (RF refers to resorcinol formaldehyde resin)...
March 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28247441/2d-chalcogenide-nanoplate-assemblies-for-thermoelectric-applications
#5
Chaochao Dun, Corey A Hewitt, Qi Li, Junwei Xu, Drew C Schall, Hyunsu Lee, Qike Jiang, David L Carroll
Engineered atomic dislocations have been used to create a novel, Sb2 Te3 nanoplate-like architecture that exhibits a unique antisymmetric chirality. High-resolution transmission electron microscopy (HRTEM) coupled with atomic force microscopy and X-ray photoelectron spectroscopy reveals the architectures to be extremely well ordered with little residual strain. Surface modification of these topologically complex macrostructures (≈3 µm) has been achieved by direct growth of metallic Ag nanoparticles onto the edge sites of the Sb2 Te3 ...
March 1, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28230203/water-insoluble-photosensitizer-nanocolloids-stabilized-by-supramolecular-interfacial-assembly-towards-photodynamic-therapy
#6
Yamei Liu, Kai Ma, Tifeng Jiao, Ruirui Xing, Guizhi Shen, Xuehai Yan
Nanoengineering of hydrophobic photosensitizers (PSs) is a promising approach for improved tumor delivery and enhanced photodynamic therapy (PDT) efficiency. A variety of delivery carriers have been developed for tumor delivery of PSs through the enhanced permeation and retention (EPR) effect. However, a high-performance PS delivery system with minimum use of carrier materials with excellent biocompatibility is highly appreciated. In this work, we utilized the spatiotemporal interfacial adhesion and assembly of supramolecular coordination to achieve the nanoengineering of water-insoluble photosensitizer Chlorin e6 (Ce6)...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28195299/nanoengineering-of-an-si-mnge-quantum-dot-superlattice-for-high-curie-temperature-ferromagnetism
#7
Tianxiao Nie, Xufeng Kou, Jianshi Tang, Yabin Fan, Shengwei Lee, Qinglin He, Li-Te Chang, Koichi Murata, Yin Gen, Kang L Wang
The realization and application of spintronic devices would be dramatically advanced if room-temperature ferromagnetism could be integrated into semiconductor nanostructures, especially when compatible with mature silicon technology. Herein, we report the observation of such a system - an Si/MnGe superlattice with quantum dots well aligned in the vertical direction successfully grown by molecular beam epitaxy. Such a unique system could take full advantage of the type-II energy band structure of the Si/Ge heterostructure, which could trap the holes inside MnGe QDs, significantly enhancing the hole-mediated ferromagnetism...
February 14, 2017: Nanoscale
https://www.readbyqxmd.com/read/28138241/nanoengineered-implant-as-a-new-platform-for-regenerative-nanomedicine-using-3d-well-organized-human-cell-spheroids
#8
Laetitia Keller, Ysia Idoux-Gillet, Quentin Wagner, Sandy Eap, David Brasse, Pascale Schwinté, Manuel Arruebo, Nadia Benkirane-Jessel
In tissue engineering, it is still rare today to see clinically transferable strategies for tissue-engineered graft production that conclusively offer better tissue regeneration than the already existing technologies, decreased recovery times, and less risk of complications. Here a novel tissue-engineering concept is presented for the production of living bone implants combining 1) a nanofibrous and microporous implant as cell colonization matrix and 2) 3D bone cell spheroids. This combination, double 3D implants, shows clinical relevant thicknesses for the treatment of an early stage of bone lesions before the need of bone substitutes...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28124594/strategies-of-engineering-nanoparticles-for-treating-neurodegenerative-disorders
#9
Khanh Tu Nguyen, Minh Nguyet Pham, Toi Van Vo, Wei Duan, Phuong Ha-Lien Tran, Tran Truong-Dinh Thao
Neurodegenerative disorders (NDs) are typically referred to Alzheimer's disease, Parkinson's diseases, amyotrophic lateral sclerosis and prion disease. These are commonly debilitating and, unfortunately, have few therapeutic options. One of the main difficulties in fighting against NDs is to overcome the shielding of blood-brain barrier (BBB), which greatly limits the penetration of various therapeutic drugs, which sometimes leads to severe side effects. Nanotechnology, by engineering materials of a size scale usually within 1-100 nm, fortunately offers an alternative approach for novel, promising and innovative solutions...
January 25, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28073276/interlaced-nanostructured-interface-with-graphene-buffer-layer-reduces-thermal-boundary-resistance-in-nano-microelectronic-systems
#10
Lei Tao, Sreeprasad Theruvakkattil Sreenivasan, Rouzbeh Shahsavari
Improving heat transfer in hybrid nano/microelectronic systems is a challenge, mainly due to the high thermal boundary resistance (TBR) across the interface. Herein, we focus on gallium nitride (GaN)/diamond interface-as a model system with various high power, high temperature, and optoelectronic applications-and perform extensive reverse nonequilibrium molecular dynamics simulations, decoding the interplay between the pillar length, size, shape, hierarchy, density, arrangement, system size, and the interfacial heat transfer mechanisms to substantially reduce TBR in GaN-on-diamond devices...
January 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28050890/nanoengineered-strategies-for-sirna-delivery-from-target-assessment-to-cancer-therapeutic-efficacy
#11
REVIEW
Dinesh Kumar Mishra, Neelam Balekar, Pradyumna Kumar Mishra
The promise of RNA interference (RNAi) technology in cancer therapeutics aims to deliver small interfering RNA (siRNA) for silencing of gene expression in cell type-specific pathway. However, the challenge for the delivery of stable siRNA is hindered by an immune-hostile tumor microenvironment and physiological barriers of the circulatory system. Therefore, the development and validation of safe, stable, and efficient nanoengineered delivery systems are highly essential for effective delivery of siRNA into cancer cells...
April 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28026152/harnessing-three-dimensional-anatomy-of-graphene-foam-to-induce-superior-damping-in-hierarchical-polyimide-nanostructures
#12
Pranjal Nautiyal, Benjamin Boesl, Arvind Agarwal
Graphene foam-based hierarchical polyimide composites with nanoengineered interface are fabricated in this study. Damping behavior of graphene foam is probed for the first time. Multiscale mechanisms contribute to highly impressive damping in graphene foam. Rippling, spring-like interlayer van der Waals interactions and flexing of graphene foam branches are believed to be responsible for damping at the intrinsic, interlayer and anatomical scales, respectively. Merely 1.5 wt% graphene foam addition to the polyimide matrix leads to as high as ≈300% improvement in loss tangent...
December 27, 2016: Small
https://www.readbyqxmd.com/read/28009510/lead-free-perovskite-nanowire-array-photodetectors-with-drastically-improved-stability-in-nanoengineering-templates
#13
Aashir Waleed, Mohammad Mahdi Tavakoli, Leilei Gu, Ziyi Wang, Daquan Zhang, Arumugam Manikandan, Qianpeng Zhang, Rongjun Zhang, Yu-Lun Chueh, Zhiyong Fan
Organometal halide perovskite materials have triggered enormous attention for a wide range of high-performance optoelectronic devices. However, their stability and toxicity are major bottleneck challenges for practical applications. Substituting toxic heavy metal, that is, lead (Pb), with other environmentally benign elements, for example, tin (Sn), could be a potential solution to address the toxicity issue. Nevertheless, even worse stability of Sn-based perovskite material than Pb-based perovskite poses a great challenge for further device fabrication...
December 30, 2016: Nano Letters
https://www.readbyqxmd.com/read/28005319/suppression-of-frost-nucleation-achieved-using-the-nanoengineered-integral-humidity-sink-effect
#14
Xiaoda Sun, Konrad Rykaczewski
Inhibition of frost formation is important for increasing efficiency of refrigeration systems and heat exchangers, as well as for preventing the rapid icing over of water-repellant coatings that are designed to prevent accumulation of rime and glaze. From a thermodynamic point of view, this task can be achieved by either increasing hydrophobicity of the surface or decreasing the concentration of water vapor above it. The first approach has been studied in depth, but so far has not yielded a robust solution to the problem of frost formation...
December 29, 2016: ACS Nano
https://www.readbyqxmd.com/read/27960388/bionano-interaction-study-on-antimicrobial-star-shaped-peptide-polymer-nanoparticles
#15
Shu J Lam, Edgar H H Wong, Neil M O'Brien-Simpson, Namfon Pantarat, Anton Blencowe, Eric C Reynolds, Greg G Qiao
'Structurally nanoengineered antimicrobial peptide polymers' (SNAPPs), in the form of star-shaped peptide polymer nanoparticles, have been recently demonstrated as a new class of antimicrobial agents with superior in vitro and in vivo efficacy against Gram-negative pathogens, including multidrug-resistant species. Herein, we present a detailed bionano interaction study on SNAPPs by assessing their antimicrobial activities against several Gram-negative bacteria in complex biological matrices. Simulated body fluid and animal serum were used as test media to reveal factors that influence the antimicrobial efficacy of SNAPPs...
December 14, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27941869/deterministic-composite-nanophotonic-lattices-in-large-area-for-broadband-applications
#16
Jolly Xavier, Jürgen Probst, Christiane Becker
Exotic manipulation of the flow of photons in nanoengineered materials with an aperiodic distribution of nanostructures plays a key role in efficiency-enhanced broadband photonic and plasmonic technologies for spectrally tailorable integrated biosensing, nanostructured thin film solarcells, white light emitting diodes, novel plasmonic ensembles etc. Through a generic deterministic nanotechnological route here we show subwavelength-scale silicon (Si) nanostructures on nanoimprinted glass substrate in large area (4 cm(2)) with advanced functional features of aperiodic composite nanophotonic lattices...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27935609/interactions-between-circulating-nanoengineered-polymer-particles-and-extracellular-matrix-components-in-vitro
#17
Julia A Braunger, Mattias Björnmalm, Nathan A Isles, Jiwei Cui, Timothy M A Henderson, Andrea J O'Connor, Frank Caruso
The extracellular matrix (ECM) that surrounds cells in vivo represents a biological barrier for nanomaterials in biomedicine. Herein, we present a system for investigating the interactions between circulating polymer particles and ECM components in vitro using a commercially available flow-based device. We use this system to show how material-dependent interactions of two different particle types-one assembled using poly(ethylene glycol) (PEG) and one prepared using poly(methacrylic acid) (PMA)-affect their interactions with basement membrane extracts during in vitro circulation, with PEG particles remaining in circulation longer than PMA particles...
December 9, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27933818/atomic-layer-deposited-coatings-on-nanowires-for-high-temperature-water-corrosion-protection
#18
Alexander S Yersak, Ryan J Lewis, Li-Anne Liew, Rongfu Wen, Ronggui Yang, Yung-Cheng Lee
Two-phase liquid-cooling technologies incorporating micro/nanostructured copper or silicon surfaces have been established as a promising thermal management solution to keep up with the increasing power demands of high power electronics. However, the reliability of nanometer-scale features of copper and silicon in these devices has not been well investigated. In this work, accelerated corrosion testing reveals that copper nanowires are not immune to corrosion in deaerated pure hot water. To solve this problem, we investigate atomic layer deposition (ALD) TiO2 coatings grown at 150 and 175 °C...
November 30, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27910740/oral-squamous-cell-carcinoma-current-treatment-strategies-and-nanotechnology-based-approaches-for-prevention-and-therapy
#19
REVIEW
Sankalp A Gharat, Munira Momin, Chintan Bhavsar
Oral squamous cell carcinoma (OSCC) is the most common type of oral cancer; it involves damage to oral epithelial cells due to accumulation of multiple genetic mutations in the cells. OSCC remains major cause of morbidity and mortality in patients with head and neck cancers. Tobacco, smoking, alcohol consumption alone or with chewing tobacco, and betel quid are potential carcinogens contributing to the high occurrence of OSCC. Current treatment modalities for OSCC like chemoradiotherapy, surgery, EGFR inhibitors and COX-2 inhibitors, and photodynamic therapy have led to the major problems related to non-specific cell death...
2016: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/27874075/a-rapid-response-thin-film-plasmonic-thermoelectric-light-detector
#20
Ying Pan, Giulia Tagliabue, Hadi Eghlidi, Christian Höller, Susanne Dröscher, Guo Hong, Dimos Poulikakos
Light detection and quantification is fundamental to the functioning of a broad palette of technologies. While expensive avalanche photodiodes and superconducting bolometers are examples of detectors achieving single-photon sensitivity and time resolutions down to the picosecond range, thermoelectric-based photodetectors are much more affordable alternatives that can be used to measure substantially higher levels of light power (few kW/cm(2)). However, in thermoelectric detectors, achieving broadband or wavelength-selective performance with high sensitivity and good temporal resolution requires careful design of the absorbing element...
November 22, 2016: Scientific Reports
keyword
keyword
92461
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"