9^th International Conference on Smart Materials and Structures November 16-17, 2020 Amsterdam, Netherlands

Biography:

Morgan Advanced Materials (LSE: MGAM) is a UK-headquartered global manufacturer of specialized engineered products made from carbon, advanced ceramics and composites. It was the fi rst European strategic partner for the graphene activities at the University of Manchester National Graphene Institute, Morgan being recognized by Manchester for having the product engineering and design expertise required to commercialize the materials developed at the NGI. After being educated as a chemical engineer, Richard Clark has been with Morgan for 30 years, developing and commercializing materials across the spectrum of Morgan’s portfolio, most recently focusing on materials related to energy. Richard was part of Morgan’s team engaged with the University of Cambridge developing electrolytically produced carbon nanomaterials and has continued his involvement in this fi eld in collaboration with Morgan’s team at the Manchester NGI.

Abstract:

Since the ground-breaking article in Science in October 2004 describing the occurrence, isolation and potential signifi cance of graphene, there has been a huge interest in developing industrially scalable methods of manufacture from bottom-up and top-down routes. One such top-down route developed for the mass manufacture of graphene involves electrochemical exfoliation. Th is can be conducted in anodic (oxidative) and cathodic (reductive) regimens, with the latter more suitable for production of higher quality (containing fewer defects) graphene, but hindered by lower effi ciency and yield. This makes the selection of an appropriate electrolyte particularly important. Previous work has shown that graphene prepared by electrochemical exfoliation can be simultaneously functionalized with groups tailored to improve solubility in aqueous systems. In this case, functionalization signifi cantly enhances the specifi c capacitance of the material when used as an electrode in super capacitors.Th is presentation details the expansion of this work in two ways.Firstly, it shows the relative characteristics of diff erent types of electrolyte and suggests a mechanism for the performance in each case. Secondly, it details the use of the preferred electrolyte with appropriate additional reagents in the exfoliation of graphite and simultaneous functionalization of the product graphene with metal nanostructures, specifi cally various morphologies of gold and cobalt.Th e metal-functionalized graphene sheets show high catalytic activity and stability when used as electrocatalysts for hydrogen evolution reactions. Other uses of these materials are found in fl exible electronics, in biosensing and in biomedicine. Th e methods demonstrated can be readily extended to functionalize graphene with other metal salts or mixtures of metal salts, further expanding the applicability. Functionalization of graphene with metal nanostructures, gold (top) and cobalt (bottom). Th e inset pictures show the color change of the electrolyte as electrolysis time increases.

Biography:

Hossein Sojoudi is an Assistant Professor in the Mechanical, Idustrial, and Manufacturing Engineering Department at the University of Toledo. Prior to joining UT, he was a Postdoctoral Associate and Lecturer in the Mechanical Engineering Department at the Massachusetts Institute of Technology (MIT) with a joint appointment in the Chemical Engineering Department. Prior to MIT, Hossein was a Postdoctoral Fellow at the Georgia Institute of Technology, where he obtained his PhD as well in Mechanical Engineering with a Minor in Materials Science. He received several awards including the Materials Research Society Best Presentation Award, Prestigious Ann Robinson Clough Grant, and several other awards from MIT

Abstract:

We present an electrochromic device (ECD) fabricated using PEDOT:PSS and graphene as active conductive electrode films and a fl exible compliant polyurethane substrate with 1-ethyl-3-methylimidazolium bis(trifl uoromethylsulfonyl) imide (EMI-TSFI) additive, as ionic medium. Th is device with a docile, elastic intermediate substrate along with a transparency controlled PEDOT:PSS fi lm provides a wide color contrast and fast switching rate. We harness wrinkling instability of graphene to achieve a hydrophobic nature without compromising transparency of the ECD. Th is mechanical self-assembly approach helps in controlling the wavelength of wrinkles generated by inducing measured prestrain conditions and regulating the modulus contrast by selection of underlying materials used, hereby controlling the extent of transparency. Th e reduction and oxidation switching times for the device were analyzed to be 5.76 s and 5.34 s for a 90% transmittance change at an operating DC voltage of 15 ± 0.1 V. Strain dependent studies show that the performance was robust with the device retaining switching contrasts even at 15% uniaxial strain conditions. Our device also exhibits superior antiwetting properties with an average water contact angle of 110° ± 2° at an induced radial prestrain of 30% in the graphene fi lm. A wide range color contrast, flexibility, and antiwetting nature of the device envision its uses in smart windows, visors, and other wearable equipment where these functionalities are of outmost importance for developing new generation of smart interactive devices.

Biography:

Mineo Hiramatsu is a Full Professor of Department of Electrical and Electronic Engineering and the Director of Research Institute, Meijo University, Japan. He served as the Director of The Japan Society of Applied Physics. His main fi elds of research are plasma diagnostics and plasma processing for the synthesis of thin films and nanostructured materials. Author of more than 100 scientifi c papers and patents on plasma processes for materials science. Member of organizing and scientifi c committees of international conferences on plasma chemistry and plasma processing. Japan Society of Applied Physics Fellow

Abstract:

Graphene (monolayer and few layers) is a two-dimensional material with the large anisotropy between in-plane and outof-plane directions. Carbon nanowalls (CNWs) are few-layer graphenes with open boundaries, standing vertically on a substrate. Th e sheets form a self-supported network of mazelike-wall structures. CNWs and similar graphene structures can be synthesized by several plasma enhanced chemical vapor deposition (PECVD) techniques. CNWs are sometimes decorated with metal nanoparticles and biomolecules. Th e structure of CNWs with large surface area would be suitable for the platform in electrochemical and biosensing applications. CNW fi lms can be potentially used as electrodes of electrochmical sensor,capacitor, dye-sensitized solar cell, polymer electrolyte fuel cell (PEFC), and implantable glucose fuel cell (GFC). Among these, CNW electrodes in fuel cells should be decorated with catalytic nanoparticles such as Pt. From a practical point of view, control of CNW structures including spacing between adjacent nanowalls and crystallinity is signifi cantly important. Moreover, formation method of catalytic metal nanoparticles should be established. We carried out CNW growth using PECVD employing CH4/H2/Ar mixtures with emphasis on the structure control of CNWs. We report the eff ects of ion bombardment and catalytic metals on the nucleation of vertical nanographenes to realize active control of interspace between adjacent walls. Moreover, CNW surface was decorated with Pt nanoparticles by the reduction of chloroplatinic acid or by the metal-organic chemical deposition employing supercritical fl uid. We also report the performances of hydrogen peroxide sensor, PEFC and GFC, where CNW electrode was used.

Biography:

Sungjin Park has completed his PhD from KAIST, Korea and postdoctoral studies from Northwestern University and University of Texas at Austin. Currently, he is an Assoicate Professor at Inha University. He has published more than 85 papers in reputed journals.

Abstract:

Chemical designing on nano-materials in molecular level would be a promising route to create new hybrid materials and to control various properties of nano- and molecular materials. Organometallic compounds have been a center of molecular catalysts with preeminent catalytic activity and selectivity in a wide range of chemical transformations. As carbonbased nanomaterials, such as graphene-based materials, carbon nanotubes, and carbon nitrides, are sterically bulky, and they exhibit a wide spectrum of electrical properties, they can dramatically tune the catalytic behavior of transition metal-based active species. Hybridization of organometallic complexes with graphene-based materials can give rise to enhance catalytic performances. In this presentation, I will discuss my recent research activities on the fundamental chemistry of carbon-based nano-materials as well as catalytic applications

Biography:

K.V. Madhuri has completed her PhD at the age of 27 years from Sri Venkateswara University and postdoctoral studies from Universite de Moncton, CANADA. She is the Assoc. Professor &Assoc.Dean of Research & Development, in an esteemed University. She has published 19 papers in reputed national/international journals and has been serving as an editorial board member of reputed journals. She had presented about 27 research papers in national/International conferences. In addition to this, she had delivered invited talks in reputed institutes/conferences/Workshops/Orientation programs. She had recently fi nished a project under young Scientist scheme by Department of Science &Technology, New Delhi, India.

Abstract:

Biography:

Larry G Christner received his Ph.D. from Pennsylvania State University in 1972 followed by 5 years at United Technologies Corporation working on carbon deposition in steam reforming and materials development for fuel cells. He spent the next 23 years at Fuel Cell Energy starting as Manager of materials science and was later promoted as Vice President. He retired in 2001 and started LGC Consultants LLC.

Abstract:

Biography:

Taiichi Otsuji received the Doctorate,Engineering degree from Tokyo Institute of Technology, Japan in 1994. He has been a professor at RIEC, Tohoku University, Japan since 2005 after working for Kyushu Institute of Technology(1999-2005) and NTT Laboratories (1984-1999), Japan. He is authored and co-authored 250 peer-reviewed journals. He was awarded the Outstanding Paper Award of the 1997 IEEE GaAs IC Symposium, and has been served as an IEEE Electron Device Society Distinguished Lecturer since 2013. He is a Fellow of the IEEE, a senior member of the OSA, and a member of the MRS, SPIE, JSAP, and IEICE.

Abstract:

Biography:

Abstract:

Biological systems found in nature provide excellent examples of highly controlled and organized architectures that generate complex materials. Using these materials and their unique microstructures as templates to produce nano-structured materials can result in some special results that manmade templates can rarely/can’t achieve at current time.Th is presentation will demonstrate an innovative technology to produce the copper-carbon-core-shell nanoparticles (CCCSNs) using cellulose as templates (US Patent No.: US8,828,485 B2). Th e technology relies on reducing the Cu+2 ions by absorbing them in the cellulose (C6H10O5)n structures of natural fi bers and then, going through carbonization and refi ning processes to produce the CCCSNs. In contrast to the conventional methods, the nanoparticles made from this technology are core/shell structures in nature and dispersible in both water and organic solvents (such as oil) with very low cost. CCCSNs possesses many special properties that commercially available copper nanoparticles couldn’t have. CCCSNs have high physical/chemical stabilities and form the Cu<=>Cu2O equilibrium system without forming cupric oxide, which is signifi cant since cuprous oxide is an optical catalyst material with relatively low bandgap (2.137eV).Th e most unique property is the regeneration behavior of CCCSNs, when treated with reducing environment, the Cu<=>Cu2O system will return to pure copper status with no signifi cant changes in particle size distribution or core-shell structure. Because of the excellent stability, superior performance and low cost, CCCSNs have been tested as anti-bacteria; anti-termite; anti-algea and as an optical catalyst for volatile organic compounds (VOC) treatment reagents and achieved outstanding results.

Biography:

Mohammed got his bacholer’s degree in Physics in 2006 from Umm Al-Qura University and Master’s degree in Applied physics in 2010 from Malaya University. He is a PhD student in the Department of Physics at the University of Kansas.

Abstract:

Biography:

Zahra Komeily Nia is doing her PhD at Deakin University (Australia) and recived her master and bachelor’s degrees from Tehran polytechnic (Iran) and Guilan universities (Iran). As an undergraduagte student she studied textile engineering and has some working knowledge in the fi led of chemistry of natural and synthetic fibers. During her master study, she has worked on nanomaterial characterization and fabrication and her research work was more focused on material science and engineering. In Feb 2015, she has recived Deakin University Postgraduate Research Scholarship (DUPR) and has worked on advanced characteriastion of graphene as her PhD project. She has published papers on her postgraduate research.

Abstract:

Free radicals have many functions, for example, as catalyst for chemical reactions and anti-oxidants in personal care products. However, most of the radical species used in industrial processes are highly toxic, expensive and not stable. Developing green, low-cost and stable free radicals is hence signifi cant. It has been revealed that radicals exist on the edge and defects of graphene. Th e radicals have been found to be ultra-stable and non-toxic. Th eir stability is attributed to the rigid π-conjugated planar structure of graphene which acts like a physical barrier for the radicals and prevents them to react with each other. Although the presence of graphene radicals has been demonstrated, little is known on how to control their production. Furthermore, the potential applications of graphene radicals remain largely unexplored. To understand graphene radical and its formation, chemical oxidation and exfoliation of graphite followed by diff erent reduction method was used as a technique for mass production of graphene. Th e chemical characterisation of GO and reduced GO samples beside the free radical measurments has indicated that the maximum radical content could be obtained on GO samples with a specifi c atomic ratio of carbon to oxygen. Th is means over oxidizing or over reducing of GO can decrease the radical population on its surface