Results 61 to 70 of about 72,062 (285)

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Use of nano-silica in cement based materials—A review

Cogent Engineering, 2015
The research nowadays is mainly focusing on the basic science of cementitious material at nano/atomic level. Further, researchers are continuing to improve the durability and sustainability of concrete and have realized significant increment in ...
Paratibha Aggarwal, Rahul Pratap Singh, Yogesh Aggarwal   +2 more
doaj   +1 more source

Experimental Comparison of Fibers and Nanomaterials in Compression Test and Cost of High Strength Concrete in Egypt

Civil and Environmental Engineering, 2022
The present work addresses conducting an experimental comparison between different types and dosages of fibers and nanomaterials in compressive tests and the cost of mixes for high-strength concrete (HSC).
Al-Hamad Ezzat Gazy, Ragab Ahmed Mahmoud, Elattar Mohamed Mohsen, Sadek Dina Mahmoud   +3 more
doaj   +1 more source

An experimental study on ballistic impact response of jute reinforced polyethylene glycol and nano silica based shear thickening fluid composite

Defence Technology, 2022
The present study aims at assessing the ballistic impact behaviour of jute reinforced polyethylene glycol (PEG) and nano silica based shear thickening fluid (STF). Preparation of STF is achieved by dispersing the nano silica particles at different weight
Vishwas Mahesh, Dineshkumar Harursampath, Vinyas Mahesh   +2 more
doaj   +1 more source

Toughening mechanisms in novel nano-silica epoxy polymers [PDF]

, 2007
A crosslinked epoxy polymer has been modified by the addition of nano-silica particles. The particles were introduced via a sol-gel technique which gave a very well dispersed phase of nanosilica particles which were about 20 nm in diameter.
Johnsen, B. B., Kinloch, A. J., Mohammed, R. D., Sprenger, S., Taylor, A. C.   +4 more
core  

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Potential use of fly ash based nano silica as mineral additive to improve the mechanical properties of self-healing mortar

Case Studies in Construction Materials
Hydrogel-based self-healing mortar often experiences strength decrease that may impact concrete performance under mechanical load. While the addition of commercial colloidal nano silica can improve the strength of hydrogel-based self-healing mortar, they
Puput Risdanareni, Vita Ayu Kusuma Dewi, Ruri Agung Wahyuono, Januarti Jaya Ekaputri, Monita Olivia, Yaghoob Farnam, Nele De Belie   +6 more
doaj   +1 more source

Effect of Nano Silica on Mechanical Properties and Durability of Normal Strength Concrete

Archives of Civil Engineering, 2012
Nano technology is an emerging field of interest for civil engineering application. Among the nano materials presently used in concrete, nano-silica possess more pozzolanic nature.
Gopinath S., Mouli P.Ch., Murthy A.R., Iyer N.R., Maheswaran S.   +4 more
doaj   +1 more source

Properties of nano-silica modified pervious concrete

Case Studies in Construction Materials, 2018
The aim of this study is to evaluate the effects of inclusion nano-silica (also known as nano-SiO2) on the properties of pervious concrete containing fly ash (FA) as a partial replacement to cement. It has been found, for cementitious paste, that incorporating NS leads to reduce the cumulative pore volume by 13.4%.
Bashar S. Mohammed, Mohd Shahir Liew, Wesam S. Alaloul, Veerendrakumar C. Khed, Cheah Yit Hoong, Musa Adamu   +5 more
openaire   +2 more sources

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 more
wiley   +1 more source