scholarly journals Fabrication of Poly(styrene-co-maleic anhydride)@Ag Spheres with High Surface Charge Intensity and their Self-Assembly into Photonic Crystal Films

ChemistryOpen ◽  
2017 ◽  
Vol 6 (5) ◽  
pp. 637-641 ◽  
Author(s):  
Jiajie Bi ◽  
Genrui Fan ◽  
Suli Wu ◽  
Xin Su ◽  
Hongbo Xia ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Maleic Anhydride ◽  
Surface Charge ◽  
Self Assembly ◽  
High Surface ◽  
Crystal Films ◽  
Charge Intensity

Chemically Responsive Polymer Inverse-Opal Photonic Crystal Films Created by a Self-Assembly Method

2016 ◽  
Vol 120 (22) ◽  
pp. 11938-11946 ◽  
Author(s):  
Huilin Zhao ◽  
Jianping Gao ◽  
Zeng Pan ◽  
Guanbo Huang ◽  
Xiaoyang Xu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Self Assembly ◽  
Inverse Opal ◽  
Assembly Method ◽  
Responsive Polymer ◽  
Crystal Films

Large-Area and Water Rewriteable Photonic Crystal Films Obtained by the Thermal Assisted Air–Liquid Interface Self Assembly

2019 ◽  
Vol 11 (25) ◽  
pp. 22777-22785 ◽  
Author(s):  
Shuzhen Yu ◽  
Xu Cao ◽  
Wenbin Niu ◽  
Suli Wu ◽  
Wei Ma ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Self Assembly ◽  
Liquid Interface ◽  
Large Area ◽  
Crystal Films ◽  
Air Liquid Interface

A multi-dielectric-layered triboelectric nanogenerator as energized by corona discharge

Nanoscale ◽  
2017 ◽  
Vol 9 (27) ◽  
pp. 9668-9675 ◽  
Author(s):  
Jia Jia Shao ◽  
Wei Tang ◽  
Tao Jiang ◽  
Xiang Yu Chen ◽  
Liang Xu ◽  
...  
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Corona Discharge ◽  
Surface Charge Density ◽  
High Surface ◽  
Cycling Stability ◽  
Triboelectric Nanogenerator ◽  
Excellent Cycling Stability ◽  
Vertical Contact ◽  
High Surface Charge Density

A multi-dielectric-layered vertical contact-separation mode TENG through a corona discharge approach results in outstanding output performances, i.e., a high surface charge density of 283 μC m−2 and excellent cycling stability (92.6% retention after 200 000 cycles).

Asymmetric Free-Standing 2-D Photonic Crystal Films and Their Janus Particles

2013 ◽  
Vol 135 (30) ◽  
pp. 11397-11401 ◽  
Author(s):  
Jian-Tao Zhang ◽  
Xing Chao ◽  
Sanford A. Asher
Keyword(s):  
Photonic Crystal ◽  
Janus Particles ◽  
Free Standing ◽  
Crystal Films

Flexible construction of cellulose photonic crystal optical sensing nano-materials detecting organic solvents

The Analyst ◽  
2019 ◽  
Vol 144 (6) ◽  
pp. 1892-1897 ◽  
Author(s):  
Dan Yan ◽  
Renbin Li ◽  
Wei Lu ◽  
Chunmei Piao ◽  
Lili Qiu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Polymethyl Methacrylate ◽  
Organic Solvents ◽  
Efficient Method ◽  
Carboxymethyl Cellulose ◽  
Optical Sensing ◽  
Inverse Opal ◽  
Nano Materials ◽  
Crystal Films ◽  
Colloidal Arrays

We developed a simple and efficient method to construct 3D and 2D opal and inverse opal cellulose photonic crystal films (CPCF) by embedding 3D or 2D polymethyl methacrylate (PMMA) colloidal arrays into carboxymethyl cellulose (CMC), respectively.

scholarly journals Synthesis, and Characterization, and Evaluation of Cellular Effects of the FOL-PEG-g-PEI-GAL Nanoparticles as a Potential Non-Viral Vector for Gene Delivery

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
S. Ghiamkazemi ◽  
A. Amanzadeh ◽  
R. Dinarvand ◽  
M. Rafiee-Tehrani ◽  
M. Amini
Keyword(s):  
Gene Delivery ◽  
Zeta Potential ◽  
Surface Charge ◽  
Cell Line ◽  
Graft Copolymer ◽  
Viral Vector ◽  
Transfection Efficiency ◽  
High Surface ◽  
Liver Cells ◽  
Dna Complexes

In this manuscript, we synthesized the potential non viral vector for gene delivery with proper transfection efficiency and low cytotoxicity. Polyethylenimine (PEI) is a well-known cationic polymer which has high positive surface charge for condensing plasmid DNA. However; it is highly cytotoxic in many cell lines because of the high surface charge, non-biodegradability and non-biocompatibility. To enhance PEI biodegradability, the graft copolymer “PEG-g-PEI” was synthesized. To target cancer liver cells, two targeting ligands folic acid and galactose (lactobionic acid) which are over expressed on human hepatocyte carcinoma were attached to graft copolymer and “FOL-PEG-g-PEI-GAL” copolymer was synthesized. Composition of this grafted copolymer was characterized using1H-NMR and FTIR spectra. The molecular weight and zeta potential of this copolymer was compared to PEI. The particle size and zeta potential of FOL-PEG-g-PEI-GAL/DNA complexes at various N/P ratio were measured using dynamic light scattering (DLS). Cytotoxicity of the copolymer was also studied in cultured HepG2 human hepatoblastoma cell line. The FOL-PEG-g-PEI-GAL/DNA complexes at various N/P ratios exhibited no cytotoxicity in HepG2 cell line compared to PEI 25K as a control. The novel copolymer showed enhanced biodegradability in physiological conditions in compared with PEI and targeted cultured HepG2 cells. More importantly, significant transfection efficiency was exhibited in cancer liver cells. Together, our results showed that “FOL-PEG-g-PEI-GAL” nanoparticals could be considered as a useful non-viral vector for targeted gene delivery.

scholarly journals Mechano-Triboelectric Analysis of Surface Charge Generation on Replica-Molded Elastomeric Nanodomes

Micromachines ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1460
Author(s):  
Myung Gi Ji ◽  
Mohammed Bazroun ◽  
In Ho Cho ◽  
W. Dennis Slafer ◽  
Rana Biswas ◽  
...  
Keyword(s):  
Charge Density ◽  
Surface Charge ◽  
Electrostatic Force ◽  
High Surface ◽  
Interfacial Friction ◽  
Generation Process ◽  
Charge Generation ◽  
Replica Molding ◽  
Force Microscopy ◽  
Triboelectric Charging

Replica molding-based triboelectrification has emerged as a new and facile technique to generate nanopatterned tribocharge on elastomer surfaces. The “mechano-triboelectric charging model” has been developed to explain the mechanism of the charge formation and patterning process. However, this model has not been validated to cover the full variety of nanotexture shapes. Moreover, the experimental estimation of the tribocharge’s surface density is still challenging due to the thick and insulating nature of the elastomeric substrate. In this work, we perform experiments in combination with numerical analysis to complete the mechano-triboelectrification charging model. By utilizing Kelvin probe force microscopy (KPFM) and finite element analysis, we reveal that the mechano-triboelectric charging model works for replica molding of both recessed and protruding nanotextures. In addition, by combining KPFM with numerical electrostatic modeling, we improve the accuracy of the surface charge density estimation and cross-calibrate the result against that of electrostatic force microscopy. Overall, the regions which underwent strong interfacial friction during the replica molding exhibited high surface potential and charge density, while those suffering from weak interfacial friction exhibited low values on both. These multi-physical approaches provide useful and important tools for comprehensive analysis of triboelectrification and generation of nanopatterned tribocharge. The results will widen our fundamental understanding of nanoscale triboelectricity and advance the nanopatterned charge generation process for future applications.

Production of Flexible Photonic Crystal Films for Compatible Far Infrared and Laser-Band Camouflage by Vacuum Coating Method

2016 ◽  
Vol 37 (3) ◽  
pp. 308-312 ◽  
Author(s):  
Wang Chao ◽  
Wang Lei ◽  
Chen Zhen-hua ◽  
Zhang Feng-xiang ◽  
Li Jia-wei ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Far Infrared ◽  
Crystal Films ◽  
Coating Method
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