A novel method of one-step reflection hologram

2017 ◽  
Author(s):  
Yibei Chen ◽  
Jian Su ◽  
Xingpeng Yan
Keyword(s):  
Reflection Hologram ◽  
One Step ◽  
Novel Method

scholarly journals One-step synthesis of patterned polymer brushes by photocatalytic microcontact printing

2015 ◽  
Vol 51 (6) ◽  
pp. 1027-1030 ◽  
Author(s):  
Friederike Kettling ◽  
Benjamin Vonhören ◽  
Jennifer A. Krings ◽  
Susumu Saito ◽  
Bart Jan Ravoo
Keyword(s):  
Polymer Brushes ◽  
Microcontact Printing ◽  
One Step ◽  
Novel Method

A novel method to prepare microstructured polymer brushes using TiO2 nanoparticles and photocatalytic microcontact printing is described.

scholarly journals Gamma Ray-Induced Synthesis of Silver Nanoparticles using Bacterial Cellulose as a Multi-Functional Agent and its Application

2021 ◽  
Author(s):  
Nasser H. Mohammad ◽  
gamal Mohamed elsherbiny ◽  
Ali A. Hammad ◽  
Ahmed A. Askar ◽  
Salwa A. Abou El Nour
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Cellulose ◽  
Food Packaging ◽  
Gamma Ray ◽  
Color Change ◽  
Spherical Shape ◽  
Inhibition Zone ◽  
Food Samples ◽  
One Step ◽  
Novel Method

Abstract Antibacterial coatings based on bacterial cellulose (BC) have been widely used in many fields including food packaging and wound dressing. In this study, we aimed to synthesis of colloidal AgNPs and BC/ AgNP composite by using BC as a reducing and capping agent in one step reaction induced by gamma-ray. Bacterial strain Komagataeibacter rhaeticus N1 MW322708 was used for biosynthesis BC by inoculation on Hestrin and Schramm medium and incubated statically at 35 °C for 10 days. BC sheet was formed, harvested, purified, and dried, then used for the synthesis of AgNPs and BC/AgNP by soaked 0.05 g of dried BC in 10ml of 1mM aqueous AgNO3 solution for 2h and then irradiated by gamma-ray under different doses. Color change from yellow to deep brown indicated the synthesis of AgNPs and BC/AgNP. The optical spectra of synthesized AgNPs revealed that the surface plasmon resonance was localized around 420 nm. DLS analysis showed that the mean diameter of AgNPs was 49.5 nm with a -19.36-mV value of zeta potential. TEM images revealed the spherical shape of synthesized AgNPs. The results of FESEM, FTIR, and XRD confirmed the formation of BC/AgNO3 composite. The highly crystalline nature of the BC membrane and BC/AgNP composite was observed in XRD measurements with a crystal size of 5.416 and 5.409 nm, respectively. The antibacterial activity of BC and BC/AgNP against pathogenic bacterial isolated from Pastirma food samples revealed that BC does not show antibacterial activity, while BC/AgNP composite showed antibacterial potency against Staphylococcus aureus, Enterococcus faecalis, Listeria monocytogenes, Proteus mirabilis, and Escherichia coli, with an inhibition zone of (mm) 9±1, 9±0.57, 10±1.15, 8±0.5 and 7±0.28, respectively. We concluded that this novel method presented in this paper offers a promising route for both AgNPs and BC/AgNP composites synthesis using a green, renewable biopolymer as a multifunctional agent and potential to be applied in the future development of food packing, biomedical instruments, and therapeutics.

scholarly journals Modelling and forecasting art movements with CGANs

2020 ◽  
Vol 7 (4) ◽  
pp. 191569
Author(s):  
Edoardo Lisi ◽  
Mohammad Malekzadeh ◽  
Hamed Haddadi ◽  
F. Din-Houn Lau ◽  
Seth Flaxman
Keyword(s):  
Generative Adversarial Networks ◽  
Vector Autoregressive ◽  
Adversarial Networks ◽  
Latent Distribution ◽  
Small Set ◽  
One Step ◽  
Temporal Aspect ◽  
Novel Method ◽  
The Mean ◽  
Modelling And Forecasting

Conditional generative adversarial networks (CGANs) are a recent and popular method for generating samples from a probability distribution conditioned on latent information. The latent information often comes in the form of a discrete label from a small set. We propose a novel method for training CGANs which allows us to condition on a sequence of continuous latent distributions f (1) , …, f ( K ) . This training allows CGANs to generate samples from a sequence of distributions. We apply our method to paintings from a sequence of artistic movements, where each movement is considered to be its own distribution. Exploiting the temporal aspect of the data, a vector autoregressive (VAR) model is fitted to the means of the latent distributions that we learn, and used for one-step-ahead forecasting, to predict the latent distribution of a future art movement f ( K +1) . Realizations from this distribution can be used by the CGAN to generate ‘future’ paintings. In experiments, this novel methodology generates accurate predictions of the evolution of art. The training set consists of a large dataset of past paintings. While there is no agreement on exactly what current art period we find ourselves in, we test on plausible candidate sets of present art, and show that the mean distance to our predictions is small.

scholarly journals One-step formation of three-dimensional macroporous bacterial sponges as a novel approach for the preparation of bioreactors for bioremediation and green treatment of water

RSC Advances ◽  
2018 ◽  
Vol 8 (54) ◽  
pp. 30813-30824 ◽  
Author(s):  
Areej K. Al-Jwaid ◽  
Dmitriy Berillo ◽  
Irina N. Savina ◽  
Andrew B. Cundy ◽  
Jonathan L. Caplin
Keyword(s):  
Porous Structure ◽  
Phenol Degradation ◽  
Three Dimensional ◽  
Novel Approach ◽  
Live Bacteria ◽  
One Step ◽  
Novel Method

A novel method of crosslinking live bacteria into a stable 3D porous structure and its subsequent use in phenol degradation is reported.

scholarly journals One-step generation of S and N co-doped reduced graphene oxide for high-efficiency adsorption towards methylene blue

RSC Advances ◽  
2020 ◽  
Vol 10 (62) ◽  
pp. 37757-37765
Author(s):  
Meixiu Li ◽  
Yanhui Li ◽  
Xiaoping Zhang ◽  
Heng Zheng ◽  
Aitang Zhang ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Efficiency ◽  
Reduced Graphene ◽  
One Step ◽  
Novel Method ◽  
Step Generation ◽  
Co Doped

A novel method was developed to directly generate S and N co-doped reduced graphene oxide for the adsorption of MB.

Method of lensless, no-aperture, one-step rainbow holography: theory, practice, and applications

1984 ◽  
Vol 62 (1) ◽  
pp. 77-83 ◽  
Author(s):  
C. P. Grover ◽  
R. A. Lessard ◽  
R. Tremblay
Keyword(s):  
Image Reconstruction ◽  
Theoretical Analysis ◽  
Spherical Wave ◽  
Plane Motion ◽  
Object Wave ◽  
Real Image ◽  
Rainbow Hologram ◽  
One Step ◽  
Novel Method

We introduce an innovative modification in the technique for making rainbow holograms based upon synthesization of a modulation equivalent to a slit in the object wave. Such a simulation of the slit function is achieved by imparting a suitable in-plane motion to the diffusing background of the object transparency. It is shown that the plane of localization of the synthesized aperture can be positioned anywhere with respect to the object by using a properly shaped illuminating wave. Thus, the object itself rather than its real image is directly responsible for the rainbow hologram formation making the imaging lens unnecessary. A converging or a diverging spherical wave is used to illuminate the object transparency backed by a ground glass. The image reconstruction takes place in accordance with the conventional rainbow holographic process, with the synthesized aperture occupying the plane of convergence or divergence of the object wave as the case may be. We present a theoretical analysis of this novel method of rainbow holography and give some supporting experimental results. This is followed by its application to the visualization of phase objects and a discussion of the quality of the reconstructed images.

scholarly journals From Paths to Routes: A Method for Path Classification

2021 ◽  
Vol 14 ◽  
Author(s):  
Andrea Gonsek ◽  
Manon Jeschke ◽  
Silvia Rönnau ◽  
Olivier J. N. Bertrand
Keyword(s):  
Clustering Algorithm ◽  
Clustering Algorithms ◽  
Distance Functions ◽  
Consensus Clustering ◽  
Time Warping ◽  
Cluttered Environment ◽  
Qualitative Classification ◽  
One Step ◽  
Novel Method ◽  
Dynamic Time

Many animals establish, learn and optimize routes between locations to commute efficiently. One step in understanding route following is defining measures of similarities between the paths taken by the animals. Paths have commonly been compared by using several descriptors (e.g., the speed, distance traveled, or the amount of meandering) or were visually classified into categories by the experimenters. However, similar quantities obtained from such descriptors do not guarantee similar paths, and qualitative classification by experimenters is prone to observer biases. Here we propose a novel method to classify paths based on their similarity with different distance functions and clustering algorithms based on the trajectories of bumblebees flying through a cluttered environment. We established a method based on two distance functions (Dynamic Time Warping and Fréchet Distance). For all combinations of trajectories, the distance was calculated with each measure. Based on these distance values, we grouped similar trajectories by applying the Monte Carlo Reference-Based Consensus Clustering algorithm. Our procedure provides new options for trajectory analysis based on path similarities in a variety of experimental paradigms.

scholarly journals Enhancing the stability and crystallinity of CsPbIBr2 through antisolvent engineering

2021 ◽  
Author(s):  
Alexander W. Stewart ◽  
Amal Bouich ◽  
Bernabé Marí Soucase
Keyword(s):  
Spin Coating ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coating Method ◽  
Extended Lifespan ◽  
One Step ◽  
Reproducible Method ◽  
Novel Method ◽  
Uv Visible ◽  
The Stability

AbstractAll inorganic lead-based perovskites containing bromine-iodine alloys, such as CsPbIBr2, have arisen as one of the most attractive candidates for absorber layers in solar cells. That said, there remains a large gap when it comes to film and crystal quality between the inorganic and hybrid perovskites. In this work, antisolvent engineering is employed as a simple and reproducible method for improving CsPbIBr2 thin films. We found that both the antisolvent used and the conditions under which it was applied have a measurable impact on both the quality and stability of the final product. We arrived at this conclusion by characterising the samples using scanning electron microscopy, X-ray diffraction, UV–visible and photoluminescence measurements, as well as employing a novel system to quantify stability. Our findings, and the application of our novel method for quantifying stability, demonstrate the ability to significantly enhance CsPbIBr2 samples, produced via a static one-step spin coating method, by applying isopropanol 10 s after commencing the spin programme. The antisolvent quenched CsPbIBr2 films demonstrate both improved crystallinity and an extended lifespan.

Effect of MWCNT on the Structure and Property of Nanofibrous Bundles by Blown Bubble Spinning

2020 ◽  
Vol 13 (3) ◽  
pp. 171-180
Author(s):  
Hao Dou ◽  
Peng Liu ◽  
Xin-Yue Li ◽  
Chun-Hui He
Keyword(s):  
Detailed Characterization ◽  
Mwcnt Content ◽  
Step Process ◽  
Structure And Property ◽  
Uniform Dispersion ◽  
Potential Applications ◽  
Multi Walled Carbon Nanotubes ◽  
One Step ◽  
Novel Method ◽  
Walled Carbon Nanotubes

Background: Many spinning patents and technologies have been explored to produce diverse types of nanomaterials for different applications. As a novel method, the blown bubble-spinning is a one-step process for fabrication of nanofibrous bundles. Method: In this study, polyamide6/66(PA6/66) nanofibrous bundles filled with different concentrations of multi-walled carbon nanotubes (MWCNTs) were prepared by the blown bubble-spinning. The dispersion of MWCNT in nanofibers under different treatments was investigated and a detailed characterization focusing on the influence of the presence of MWCNT on the morphology, thermal property and electrical property was carried out. Results: The results showed that MWCNTs treated by Tween60 and ultrasonication were embedded in the PA6/66 nanofibers with uniform dispersion. In addition, it was observed that thermal stability and electrical conductivity of nanofibrous bundles increased with an increase in MWCNT content. Conclusion: The PA6/66/MWCNT nanofibrous bundles fabricated by the blown bubble spinning have the great potential applications in sensors and supercapacitors.

A NOVEL METHOD FOR THE ONE-STEP SYNTHESIS OFN-ALKYL IMIDES BY THE USE OF 1,1′-DIMETHYLSTANNOCENE

1983 ◽  
Vol 12 (6) ◽  
pp. 879-880 ◽  
Author(s):  
Teruaki Mukaiyama ◽  
Junji Ichikawa ◽  
Makoto Toba ◽  
Masatoshi Asami
Keyword(s):  
One Step ◽  
Novel Method ◽  
The One
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