keyword
https://read.qxmd.com/read/38462101/immobilization-of-rare-earth-doped-aluminate-nanoparticles-encapsulated-with-silica-into-polylactic-acid-based-color-tunable-smart-plastic-window
#21
JOURNAL ARTICLE
Salhah D Al-Qahtani, Ghadah M Al-Senani
An inorganic/organic nanocomposite was used to develop an afterglow and color-tunable smart window. A combination of polylactic acid (PLA) plastic waste as an environmentally-friendly hosting agent, and lanthanide-activated strontium aluminum oxide nanoparticles (SAON) encapsulated with silica nanoparticles (SAON@Silica) as a photoluminescent efficient agent resulted in a smart organic/inorganic nanocomposite. In order to prepare SAON-encapsulated silica nanoparticles (SAON@Silica), the SAON nanoparticles were coated with silica using the heterogeneous precipitation method...
March 8, 2024: International Journal of Biological Macromolecules
https://read.qxmd.com/read/38456239/downshift-of-the-ni-d-band-center-over-ni-nanoparticles-in-situ-confined-within-an-amorphous-silicon-nitride-matrix
#22
JOURNAL ARTICLE
Norifumi Asakuma, Shotaro Tada, Tomoyuki Tamura, Erika Kawaguchi, Sawao Honda, Toru Asaka, Assil Bouzid, Samuel Bernard, Yuji Iwamoto
Herein, nanocomposites made of Ni nanoparticles in situ distributed in an amorphous silicon nitride (Ni/a-Si3 N4 ) matrix, on the one hand, and within an amorphous silicon dioxide (Ni/a-SiO2 ) matrix, on the other hand, were synthesized from the same Ni-modified polysilazane precursor. In both compounds, the Ni/Si atomic ratio (0.06-0.07), average Ni nanocrystallite size (7.0-7.6 nm) and micro/mesoporosity of the matrix were rigorously fixed. Hydrogen (H2 )-temperature-programmed desorption (TPD) profile analysis revealed that the activation energy for H2 desorption at about 100-130 °C evaluated for the Ni/a-Si3 N4 sample (47...
March 8, 2024: Dalton Transactions: An International Journal of Inorganic Chemistry
https://read.qxmd.com/read/38452344/advanced-characterization-methodology-to-unravel-the-biodegradability-of-metal-organic-framework-nanoparticles-in-extremely-diluted-conditions
#23
JOURNAL ARTICLE
Ioanna Christodoulou, Gilles Patriarche, Christian Serre, Cédric Boissiére, Ruxandra Gref
Porous iron(III) carboxylate metal-organic frameworks (MIL-100; MIL stands for Material of Institute Lavoisier) of submicronic size (nanoMOFs) have attracted a growing interest in the field of drug delivery due to their high drug payloads, excellent entrapment efficiencies, biodegradable character, and poor toxicity. However, only a few studies have dealt with the nanoMOF degradation mechanism, which is key to their biological applications. Complementary methods have been used here to investigate the degradation mechanism of Fe-based nanoMOFs under neutral or acidic conditions and in the presence of albumin...
March 7, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38447594/bionic-nanocoating-of-prosthetic-grafts-significantly-reduces-bacterial-growth
#24
JOURNAL ARTICLE
Simon Pecha, Lukas Reuter, Shahabuddin Ohdah, Johannes Petersen, Christiane Pahrmann, Pinar Aytar Çelik, Ahmet Çabuk, Hermann Reichenspurner, Yalin Yildirim
Prosthetic materials are a source of bacterial infections, with significant morbidity and mortality. Utilizing the bionic "Lotus effect," we generated superhydrophobic vascular prostheses by nanocoating and investigated their resistance to bacterial colonization. Nanoparticles were generated from silicon dioxide (SiO2 ), and coated vascular prostheses developed a nanoscale roughness with superhydrophobic characteristics. Coated grafts and untreated controls were incubated with different bacterial solutions including heparinized blood under mechanical stress and during artificial perfusion and were analyzed...
March 6, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38441193/role-of-ureteral-stent-material-and-coating-to-prevent-ureteral-stent-related-issue-a-systematic-review-and-meta-analysis
#25
JOURNAL ARTICLE
Ignatius Ivan Putrantyo, Syah Mirsya Warli, Ginanda Putra Siregar, Fauriski Febrian Prapiska, Dhirajaya Dharma Kadar, Bungaran Sihombing
INTRODUCTION: Ureteral stents require materials that balance bulk and surface properties. Achieving both can be challenging, as ideal bulk properties may not align with optimal surface properties. Thus, researching coatings and biomanufacturing methods for ideal materials is essential. METHODS: A systematic review and meta-analysis, following PRISMA Guidelines, involved literature searches across five databases: PubMed, Scopus, Embase, ClinicalKey, and Cochrane...
March 4, 2024: Archivio Italiano di Urologia, Andrologia
https://read.qxmd.com/read/38439462/strip-loaded-waveguide-amplifiers-based-on-erbium-doped-nanocomposites-with-17%C3%A2-db-internal-net-gain
#26
JOURNAL ARTICLE
Siliang Tao, Hangyu Song, Dan Zhao, Yu Yang, Shuangshuang Wang, Jinming Yan, Jiashuo Wei, Xibin Wang, Guanshi Qin, Fei Wang, Daming Zhang
We propose a strip loaded amplifier employing SU-8 as the loaded waveguide and nanoparticles (NPs)-polymethyl methacrylate (PMMA) as the cladding layer. By leveraging the undoped SU-8 loaded waveguide, the polymer waveguide amplifier accomplished remarkably low transmission losses, reaching as low as 1.8 dB/cm at 1530 nm. We prepared NPs-PMMA nanocomposite by utilizing NaLu0.1 Y0.7 F4 : Er3+ , Yb3+ @NaLuF4 core-shell nanoparticles, which exhibited a significantly enhanced lifetime of 6.15 ms...
February 26, 2024: Optics Express
https://read.qxmd.com/read/38439406/simulation-of-optomechanical-interaction-of-levitated-nanoparticle-with-photonic-crystal-micro-cavity
#27
JOURNAL ARTICLE
Tadeáš Maňka, Martin Šiler, Vojtěch Liška, Pavel Zemánek, Mojmír Šerý, Oto Brzobohatý
We propose and analyze theoretically a promising design of an optical trap for vacuum levitation of nanoparticles based on a one-dimensional (1D) silicon photonic crystal cavity (PhC). The considered cavity has a quadratically modulated width of the silicon wave guiding structure, leading to a calculated cavity quality factor of 8 × 105 . An effective mode volume of approximately 0.16 μm3 having the optical field strongly confined outside the silicon structure enables optical confinement on nanoparticle in all three dimensions...
February 26, 2024: Optics Express
https://read.qxmd.com/read/38431245/preparation-and-characterization-of-green-silicon-nanoparticles-and-their-effects-on-growth-and-lead-pb-accumulation-in-maize-zea-mays-l
#28
JOURNAL ARTICLE
Haseeba Maryam, Ghulam Hassan Abbasi, Muhammad Waseem, Temoor Ahmed, Muhammad Rizwan
The excessive accumulation of heavy metals, particularly lead (Pb) in agricultural soils, is a growing problem worldwide and needs urgent attention. This study aimed to prepare green silicon (Si) NPs using extract of Chenopodium quinoa leaves and evaluated their effects on Pb uptake and growth of maize (Zea mays L.). The results indicated that Pb exposure negatively affected the growth and chlorophyll contents of maize varieties, while SiNPs positively affected these attributes. Pb alone increased the electrolyte-leakage (EL), hydrogen-peroxide (H2 O2 ) and selected antioxidant enzyme activities in leaves, whereas SiNPs decreased EL and H2 O2 concentrations and further enhanced the enzyme activities as compared to their respective controls...
February 29, 2024: Environmental Pollution
https://read.qxmd.com/read/38430566/silicon-eccentric-shell-nanoparticles-fabricated-by-template-assisted-deposition-for-mie-magnetic-resonances-enhanced-light-confinement
#29
JOURNAL ARTICLE
Huan Yang, Xinbing Jiang, Manman Zhang, Ben Q Li, Jiajie Wang, Yiping Han
We report a structure of silicon eccentric shell particles array, fabricated by the SiO2 particles monolayer array assisted deposition of amorphous Si, for high-efficiency light confinement. The SiO2 particles monolayer array is tailored to regulate its interparticle distance, followed by silicon film deposition to obtain silicon eccentric shell arrays with positive and negative off-center distance e. We studied the Mie resonances of silicon solid sphere, concentric shell, eccentric shell and observed that the eccentric shell with positive off-center e supports superior light confinement because of the enhanced Mie magnetic resonances...
March 2, 2024: Nanotechnology
https://read.qxmd.com/read/38430564/new-aspects-of-femtosecond-laser-ablation-of-si-in-water-a-material-perspective
#30
JOURNAL ARTICLE
Kanaka Ravi Kumar, Dipanjan Banerjee, A Mangababu, R Sai Prasad Goud, Arshiya Anjum, Gnana Prakash A P, A P Pathak, Venugopal Rao Soma, V S Nageswara Rao Sunkaranam
We report a study of the role of material's conductivity in determining the morphology of nanoparticles and nanostructures produced by ultrafast laser ablation of solids. Nanoparticles and textured surfaces formed by laser ablation display a wide variation in size and morphology depending on the material. In general, these qualities can be grouped as to material type, insulator, semiconductor, or metal; although each has many other different material properties that make it difficult to identify the critical material factor...
March 2, 2024: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://read.qxmd.com/read/38427784/reprecipitation-a-rapid-synthesis-of-micro-sized-silicon-graphene-composites-for-long-lasting-lithium-ion-batteries
#31
JOURNAL ARTICLE
Yuto Katsuyama, Yang Li, Sophia Uemura, Zhiyin Yang, Mackenzie Anderson, Chenxiang Wang, Cheng-Wei Lin, Yuzhang Li, Richard B Kaner
Silicon microparticles (SiMPs) have gained significant attention as a lithium-ion battery anode material due to their 10 times higher theoretical capacity compared to conventional graphite anodes as well as their much lower production cost than silicon nanoparticles (SiNPs). However, SiMPs have suffered from poorer cycle life relative to SiNPs because their larger size makes them more susceptible to volume changes during charging and discharging. Creating a wrapping structure in which SiMPs are enveloped by carbon layers has proven to be an effective strategy to significantly improve the cycling performance of SiMPs...
March 1, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38424000/scalable-superhydrophilic-solar-evaporators-for-long-term-stable-desalination-fresh-water-collection-and-salt-collection-by-vertical-salt-deposition
#32
JOURNAL ARTICLE
Xiaopeng Huang, Lingxiao Li, Kai Chen, Junping Zhang
Solar-driven interfacial evaporation (SIE) is very promising to solve the issue of fresh water shortage, however, poor salt resistance severely hinders long-term stable SIE and fresh water collection. Here, we report design of superhydrophilic solar evaporators for long-term stable desalination, fresh water collection and salt collection by vertical salt deposition. The evaporators are prepared by sequentially deposition of silicone nanofilaments, polypyrrole and Au nanoparticles on a polyester fabric composed of microfibers...
February 29, 2024: ChemSusChem
https://read.qxmd.com/read/38418792/silicon-nanoparticles-loaded-biochar-for-soil-arsenic-immobilization-and-alleviation-of-phytotoxicity-in-barley-implications-for-human-health-risk
#33
JOURNAL ARTICLE
Muhammad Asif Naeem, Abrar Shabbir, Muhammad Imran, Sajjad Ahmad, Muhammad Shahid, Behzad Murtaza, Muhammad Amjad, Waqas-Ud-Din Khan
Arsenic (As)-induced environmental pollution and associated health risks are recognized on a global level. Here the impact of cotton shells derived biochar (BC) and silicon-nanoparticles loaded biochar (nano-Si-BC) was explored on soil As immobilization and its phytotoxicity in barley plants in a greenhouse study. The barley plants were grown in a sandy loam soil with varying concentrations of BC and nano-Si-BC (0, 1, and 2%), along with different levels of As (0, 5, 10, and 20 mg kg-1 ). The FTIR spectroscopy, SEM-EDX, and XRD were used to characterize BC and nano-Si-BC...
February 29, 2024: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38418300/nir-ii-imaging-guided-precise-photodynamic-therapy-for-augmenting-tumor-starvation-therapy-by-glucose-metabolism-reprogramming-interference
#34
JOURNAL ARTICLE
Xiawei Wu, Yong Fan, Kairuo Wang, Yunqiu Miao, Yongliang Chang, Jiang Ming, Xinyue Wang, Shengwei Lu, Ruichi Liu, Fan Zhang, Yang Zhang, Huanlong Qin, Jianlin Shi
Metabolic reprogramming is a mechanism by which cancer cells alter their metabolic patterns to promote cell proliferation and growth, thereby enabling their resistance to external stress. 2-Deoxy-D-glucose (2DG) can eliminate their energy source by inhibiting glucose glycolysis, leading to cancer cell death through starvation. However, a compensatory increase in mitochondrial metabolism inhibits its efficacy. Herein, we propose a synergistic approach that combines photodynamic therapy (PDT) with starvation therapy to address this challenge...
February 9, 2024: Science Bulletin
https://read.qxmd.com/read/38414228/unlocking-high-current-performance-in-silicon-anode-synergistic-phosphorus-doping-and-nitrogen-doped-carbon-encapsulation-to-enhance-lithium-diffusivity
#35
JOURNAL ARTICLE
Muhammad Arief Firdaus, Naufal Hanif Hawari, Celfi Gustine Adios, Paramadina Masihi Nasution, Erwin Peiner, Hutomo Suryo Wasisto, Afriyanti Sumboja
The silicon (Si) offers enormous theoretical capacity as a lithium-ion battery (LIB) anode. However, the low charge mobility in Si particles hinders its application for high current loading. In this study, ball-milled phosphorus-doped Si nanoparticles encapsulated with nitrogen-doped carbon (P-Si@N-C) are employed as an anode for LIBs. P-doped Si nanoparticles are first obtained via ball-milling and calcination of Si with phosphoric acid. N-doped carbon encapsulation is then introduced via carbonization of the surfactant-assisted polymerization of pyrrole monomer on P-doped Si...
February 27, 2024: Chemistry, An Asian Journal
https://read.qxmd.com/read/38411090/enriched-biochars-with-silicon-and-calcium-nanoparticles-mitigated-salt-toxicity-and-improved-safflower-plant-performance
#36
JOURNAL ARTICLE
Kazem Ghassemi-Golezani, Seyyed Amirreza Mousavi, Salar Farhangi-Abriz
Modifying biochar with nano-nutrients is one of the most effective methods in improving the efficiency of biochar in reducing the adverse effects of environmental stresses such as salinity on plant growth and productivity. The possible effects of solid biochar, nano-silicon dioxide enriched biochar, nano-calcium carbonate enriched biochar, and combined application of these enriched biochars on physiological performance of safflower ( Carthamus tinctorius L.) were evaluated under different levels of salt stress (non-saline, 6 and 12 dSm-1 )...
February 27, 2024: International Journal of Phytoremediation
https://read.qxmd.com/read/38409035/inhibition-of-growth-of-hepatocellular-carcinoma-by-co-delivery-of-anti-pd-1-antibody-and-sorafenib-using-biomimetic-nano-platelets
#37
JOURNAL ARTICLE
Xuanbo Da, Bangping Cao, Jiantao Mo, Yukai Xiang, Hai Hu, Chen Qiu, Cheng Zhang, Beining Lv, Honglei Zhang, Chuanqi He, Yulong Yang
BACKGROUND: Traditional nanodrug delivery systems have some limitations, such as eliciting immune responses and inaccuracy in targeting tumor microenvironments. MATERIALS AND METHODS: Targeted drugs (Sorafenib, Sora) nanometers (hollow mesoporous silicon, HMSN) were designed, and then coated with platelet membranes to form aPD-1-PLTM-HMSNs@Sora to enhance the precision of drug delivery systems to the tumor microenvironment, so that more effective immunotherapy was achieved...
February 26, 2024: BMC Cancer
https://read.qxmd.com/read/38407632/preparation-of-surface-molecular-imprinting-fluorescent-sensor-based-on-magnetic-porous-silica-for-sensitive-and-selective-determination-of-catechol
#38
JOURNAL ARTICLE
Yanming Shao, Zhizhen Zhao, Jun An, Caifeng Hao, Mengyi Kang, Xuan Rong, Huanhuan Zhao, Huanran Feng
A magnetic fluorescent molecularly imprinted sensor was successfully prepared and implemented to determine catechol (CT). Fe3 O4 nanoparticles were synthesized by the solvothermal technique and mesoporous Fe3 O4 @SiO2 @mSiO2 imprinted carriers were prepared by coating nonporous and mesoporous SiO2 shells on the surface of the Fe3 O4 subsequently. The magnetic surface molecularly imprinted fluorescent sensor was created after the magnetic mesoporous carriers were modified with γ-methacryloxyl propyl trimethoxy silane to introduce double bonds on the surface of the carries and the polymerization was carried out in the presence of CT and fluorescent monomers...
February 26, 2024: Mikrochimica Acta
https://read.qxmd.com/read/38405444/dielectric-detection-of-single-nanoparticles-using-a-microwave-resonator-integrated-with-a-nanopore
#39
JOURNAL ARTICLE
Arda Secme, Berk Kucukoglu, Hadi S Pisheh, Yagmur Ceren Alatas, Uzay Tefek, Hatice Dilara Uslu, Batuhan E Kaynak, Hashim Alhmoud, M Selim Hanay
The characterization of individual nanoparticles in a liquid constitutes a critical challenge for the environmental, material, and biological sciences. To detect nanoparticles, electronic approaches are especially desirable owing to their compactness and lower costs. While electronic detection in the form of resistive-pulse sensing has enabled the acquisition of geometric properties of various analytes, impedimetric measurements to obtain dielectric signatures of nanoparticles have scarcely been reported. To explore this orthogonal sensing modality, we developed an impedimetric sensor based on a microwave resonator with a nanoscale sensing gap surrounding a nanopore built on a 220 nm silicon nitride membrane...
February 20, 2024: ACS Omega
https://read.qxmd.com/read/38404872/performance-combustion-and-emission-reduction-characteristics-of-metal-based-silicon-dioxide-nanoparticle-additives-included-in-ternary-fuel-diesel-smme-iso-butanol-on-diesel-engine
#40
JOURNAL ARTICLE
Gandhi Pullagura, Joga Rao Bikkavolu, Srinivas Vadapalli, V Varaha Siva Prasad, Kodanda Rama Rao Chebattina, Debabrata Barik, Milon Selvam Dennison
Biodiesel has long been recognized as a viable alternative energy source. In order to enhance the quality, and performance of biodiesel-diesel fuel blends while reducing air pollution from combustion, additives must be employed. The present research aims to focus on the addition of SiO2 novel nanoparticles (at a concentration of 30, 60, and 90 mg/L) in the ternary fuel (TF) blend (75% of Diesel+ 15% of Sea Mango Methyl Ester (SMME15) + 10% of iso-Butanol on a volume basis) to determine engine performance, combustion, and emission characteristics of a 1-cylinder, direct injection, liquid-cooled, diesel engine...
February 29, 2024: Heliyon
keyword
keyword
34157
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

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"

We want to hear from doctors like you!

Take a second to answer a survey question.