【直播】纳米材料与生物医学应用系列研讨会（第5场）
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Please join the webinars at the following link: koushare.com/topicIndex/i/nanomaterials-applicationsA Series of Webinar on Nanomaterials ...
Speakers：Sammynaiken、Jason MaleyTime in Beijing: August 29, Sunday, 9:00 AM
Time in Dallas: August 28, Friday, 8:00 PM
Sponsors：Nanomaterials MDPI、KouShareWelcome to A Series of Webinar on Nanomaterials and Applications
We would like to invite all the Scientific Community to participate in a Series of Webinar on Nanomaterials and Applications from April to July 2021, which is sponsored by MDPI Nanomaterials and propagated by Koushare. The Webinars were scheduled at the last weekend of each month from April to July 2021 for the convenience of audiences and the speakers. Aim and ScopeThis series of Webinars are mainly designed to offer diverse sessions that address the Theme of ‘Nanomaterials and their applications’ for the purpose of sharing new thoughts and new advances among the experts, industrialists and understudies from look into topics of Nanomaterials to share their on-going developments and applications for Better tomorrow. The scope of the webinar series is to support global research communities by empowering clusters of Professor, Scientists, Researchers, Students and Business Delegates to meet and discuss topics of Nanomaterials with frontrunners in the field. These webinars cover diverse top-ranked specialties and budding aspects of important and relatively broad subject areas including nanomaterials design and synthesis for cancer detection, drug delivery, therapeutics, sensing and safety as well as security for our better life tomorrow. The talks are aimed for public with lay languages and are open to everyone in the world!
Sincerely yours
Wei Chen, Ph.D, ProfessorDepartment of PhysicsThe University of Texas at ArlingtonArlington, Texas, USA
Special website：koushare.com/topicIndex/i/nanomaterials-application
Dr. Chen Wei
Dr. Wei Chen is a professor at the department of Physics, UT Arlington. He has been engaged in cutting-edge nanotechnology research for many years and is an internationally renowned expert in nanomedicine and cancer nanotechnology. He is well known for his inventions in cancer nano-targeted therapy and deep cancer photodynamic therapy. Currently he has published 295 papers in famous academic journals such as PNAS, Nano Letters, Signal Transduction and Targeted Therapy(Nature), Advanced Materials, Advanced Functional Materials, Materials Today Physics, presided over the compilation of 1 monograph (three volumes), and participated in the compilation of 13 monographs. His papers have been cited more than 11460 times, and his H index is 56, including one paper with 685 citations, 13 papers with more than 200 times, 28 papers with more than 100 times. He has 20 US patents granted and he has been funded with more 30 scientific research projects with a total funding of more than 9 million U.S. dollars. His early pioneering work on thermoluminescence of nanoparticles were adopted by Charles P. Poole Jr. and Frank J. Owens in their first Textbook ‘Introduction to Nanotechnology’ published in 2003. Dr. Chen's scientific research work has attracted wide attention and has been reported by the American TV program CBS. Dr. Chen received the University distinguished record of research and creative activity award in 2020. He is one of the 35 scientists from the country to be included in the National Academy of Inventors 2020 class of Senior Members. He was elected be a Fellow of the International Association of Advanced Materials (Sweden) and a Vebleo Fellow in 2020 and a Sigma Xi full member in 2021.
01
Flax Orbitide Emitting Material – A Single Molecule White Emitter
Abstract
White emission from a single material is extremely rare, even more so in a molecular material instead of conjugated polymers. This is what was recently seen in the latest peptide complex when placed within a standard OLED structure, figure 1a.OLED devices employed a simple architecture designed to maximize the potential across the device while limiting recombination at the contact interfaces, this lends itself to the large turn on voltage of 5 V. Devices tend to become unstable with applied potentials exceeding 8 V, thus the operating potential of 7 V was adopted for spectroscopic testing. Current voltage characterization shows reasonable diode characteristics with a relatively large shunt resistance with respect to series resistance, figure 1b. The spectra form the emission is very broad ranging from 400 nm to 1000 nm. Emission measurements are limited by the substrate that strongly absorbs just below 400nm and the spectrometer at 1000 nm. The emission can be roughly modelled as a Plankian radiator with a temperature of 4230 K. These results are made more compelling by the nature of the peptide. The peptide is a natural product derived from a plant product, which has shown durability and an affinity to form the complex required for emission. This family of materials shows promise of emission from other complexes and base peptide materials.
Brief introduction
Saskatchewan Structural Science Center, University of Saskatchewan, Saskatoon, Canada
02
Investigating Protein Adsorption on Fullerene-Like Amorphous carbon nitride coatings
Abstract
Amorphous carbon is a very promising nano-structured material for biocompatible devices. It can be made by a variety of plasma-assisted deposition techniques and is readily doped with other elements, such as nitrogen, which allows tuneable mechanical and tribological properties, including high hardness, low coefficient of friction, and high chemical resistance. It has also been applied to polymer surfaces like poly(tetrafluoroethylene) (PTFE) which gives it the potential for coating applications to hemocompatible devices such as vascular grafts. Although advances in biomaterials used in both surgical and biomedical applications have steadily improved over the past 30 years, improvements towards their biocompatibility and longevity are still needed. Proteins immediately adsorb to the biomaterial interface when it is exposed to bodily fluids such as blood, and this protein layer mediates cellular adsorption on the biomaterial, ultimately playing a major role in the overall success of the biomaterial. Despite advances over the past 40 years in understanding protein interactions at biomaterial interface, there is still a lack of understanding on many of the mechanisms and factors affecting protein adsorption.
Fullerene-like amorphous carbon nitride (FL-CNx) films is an allotrope of amorphous carbon which are generally characterized by their high sp2 hybridized structure with relatively high nitrogen incorporation (> 20 at.%). This produces odd-membered rings that structurally bend to connect multi-layers to give films with relatively high hardness and low coefficient of friction. In our research, we have incorporated the FL-CNx films onto Au sensor chips through hot-wire graphite sputtering in order to evaluate the initial binding kinetics of two characteristic blood proteins, human serum albumin (HSA) and fibrinogen (Fib), using a commercially available surface plasmon resonance instrumentation. FL-CNx films were prepared by using different N2/(Ar+N2) plasma gas ratios and were characterized using AFM, Raman spectroscopy, XPS, and contact angle measurements in order to evaluate structural changes in the films due to different nitrogen species to the initial binding kinetics of the proteins. In addition, we will also discuss our initial research into co-doping FL-CNx films with FexOy nanoparticles, and will discuss the structural incorporation and elucidation of both Fe(II) and Fe(III) oxides by XPS, Fe L-edge XANES, and ESR techniques.
Brief introduction
Jason was raised in Estevan, Saskatchewan, a small prairie town that sits near the Canada/United States border. He has spent a long career at the University of Saskatchewan, receiving a BSc.(Hons) in Chemistry (1998) and a MSc. in Physical Chemistry (2003). Jason joined the Saskatchewan Structural Sciences Centre, a centralized research instrumentation lab at the University of Saskatchewan, in 2002 as a Research Officer in the biophysical and materials characterization sections. In 2019, he obtained his PhD in Biomedical Engineering, research he pursued on his own time in the area of protein adsorption kinetics onto amorphous carbon surfaces.
Nanomaterials (ISSN 2079-4991; CODEN: NANOKO) is an international peer-reviewed open access journal published monthly online by MDPI.
Text editor：Miaomiao Su
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