20^th International Conference on Emerging Materials and Nanotechnology June 25-26, 2018 Vancouver, British Columbia, Canada

Biography:

Chuen-Chang Lin got his PhD from Wayne State University. He is the professsor of Department of Chemical & Materials Engineering, National Yunlin University of Science and Technology. He has published 31 papers in SCI journals.

Abstract:

Carbon nanotube/graphene composites are directly grown on nickel foil without additional catalysts by chemical vapor deposition (CVD). Next, cobalt is deposited on  carbon nanotube/graphene composites by radio-frequency (RF) sputtering with different power levels and time periods. Then the cobalt is transform into cobalt oxide by annealing. The higher specific capacity is obtained at the sputtering conditions (power = 100 W and time = 60 min). The longer the time period, the higher the specific capacity. Furthermore, it also shows higher electrochemical stability for cobaltic oxide/carbon nanotube/graphene composites in comparison with cobaltic oxide.

Biography:

Xiaohui Jiang has completed her PhD from Southwest Petroleum University, China. She is a repute professor of chemistry in the school of Chemistry and Chemical Engineering, China West Normal University. She has been teaching organic chemistry for 30 years. Her researches focus on new surfactants and new organic inhibitors syntheses and their application in corrosion inhibition and pollutants removal in waste water. These researches are added financially by Science & Technology Department of Sichuan Province and National Nature Science foundation of China. She has published more than 50 papers in reputed journals

Abstract:

In present work, we report a way to construct double layers of polymer protective film by monomer in situ polymerization on X70 steel surface, meanwhile the corrosion inhibition of the double layers was evaluated and compared with those of the monomer and the polymer solution by weight loss method. The results indicated that the double polymer film formed on the X70 steel surface was exhibited an inhibition efficiency of 98.86% for X70 steel in 5 M HCl at 90 °C for 24 hours immersion.

Biography:

Meysam Haghsenas is currently an assiatnt professor with Department of Mechanical Engineering at University of North Dakota. His areas of resaerch include microstruture/properties/processing corrolations in materails including Mg nanocompsites and additively manufactured metals. He has complited his PhD in 2013 at Western University (UWO) followed by two years as a postdoctoral fellow at University of Waterloo in Canada. Dr. Hagshhenas has published more than 50 papers in reputed journals.           

Abstract:

Ambient and elevated temperature mechanical and physical properties of traditional materials like metals, polymers and ceramics are not able to match expected properties in modern engineering applications. Among metallic materials, magnesium (Mg) possesses the least density and seems an excellent candidate for aerospace and automotive industries; however, the strength and ductility of Mg alloys are relatively poor because of the low symmetry hexagonal close-packed (HCP) internal lattice structure, which significantly hinders their usage. The precipitation hardening of Mg improves the mechanical properties but there are only a few elements which form extended regions of solid solutions with Mg. Therefore, efforts are spent to develop lightweight Mg matrix composites. With the growing availability of ceramic and metallic nanoparticles, the development of new magnesium composites reinforced with nanosize (d<100 nm) partcilces, known as Mg nanocomposites, provides improved mechanical properties, as well as high temperature, corrosion, fatigue and wear properties over magnesium alloys and conventional magnesium composites reinforced with micron-size particles. The use of a small volume fraction of nano-size reinforcements (i.e. ceramic nanoparticles and carbon nano-tubes) has been shown to produce results comparable or even superior to that of matrix materials, and metal matrix composites reinforced with similar or higher volume fraction of micron size reinforcement.

Biography:

Jobin Jose has completed his PhD from Indian Institute of Technology (IIT), Kharagpur, India. Also, he did two years postdoctoral program from Chonbuk National University, Jeonju, South Korea and another two years in the Department of Chemical Engineering, KFUPM, Dhahran, Saudi Arabia. Currently he is working as Research Scientist at the Research Institute in King Fahd University of Petroleum & Minerals, Saudi Arabia. His research interests include Polymer Nanocomposites, Polymer Recycling to make value added products, Protective Coatings, Water soluble polymers etc. He has published more than 25 papers in reputed journals and conferences. He has been serving as an editorial board member of repute.

Abstract:

The degradation in biodegradable polymers are significantly affected by the change in the crystallinity with respect to time. Long time exposure in aggressive environment (either hot or cold climate) of any polymer material can cause changes in physical and mechanical properties, specifically color change, increase in brittleness. The objective of the present investigation is to understand the degradation of Poly(vinyl alcohol) (PVA)/Starch Blend (70:30 ratio) and its Nanocomposites with Graphene under the aggressive hot natural weathering conditions in Dhahran, of Saudi Arabia. PVA/Starch/Graphene nanocomposites were prepared via solution mixing and casting techniques. In the early stages of polymer exposure, the degradation happens primarily due to the dissolution of the amorphous phase, while in the later stages even the crystalline regions undergoes degradation. Changes in crystallinity, mechanical properties, molecular structure, and morphology of the nanocomposites during the aging period have been observed at different time intervals and inferred. The thermal and spectroscopic results demonstrated the dissolution of the amorphous phase during early stages of exposure followed by the deterioration of the crystalline phase in later stages. Morphological micrographs showed that the surface of the nanocomposites had fewer defects compared to the PVA/Starch blend. PVA/Starch/Graphene nanocomposites showed a remarkable retention in total crystallinity compared to the PVA/Starch blend during the aging period. The incorporation of graphene into the PVA/Starch blend made both the polymers less vulnerable to environmental degradation, and these nanocomposites could therefore be suitable as packaging films for use in outdoor applications.

Biography:

Cyprain Fang Kah has completed a Diploma in Business Management and is presently Procurement Manager at Emmanuel N² Co. Ltd, a leading construction consortium in Lefkosa in Northern Cyprus. He presently leads the company’s affairs in following up new technologies and finding novel construction materials for effective construction.

Abstract:

The development of sustainable construction and building materials with reduced environmental footprint in both manufacturing and operational phases of the material lifecycle is attracting increased interest in the housing and construction industry worldwide. Recent innovations have led to the development of geopolymer foam concrete, which combines the performance benefits and operational energy savings achievable using lightweight foam concrete, with the cradle-to-gate emissions reductions obtained using a geopolymer binder derived from fly ash. To bring a better understanding of the properties and potential large-scale benefits associated with the use of geopolymer foam concretes, this paper addresses some of the sustainability questions currently facing the cement and concrete industry, in the context of the utilisation of foam concretes based either on Ordinary Portland Cement (OPC) or on geopolymer binders. The potential of geopolymer binders to provide enhanced fire resistance is also significant, and the aluminosilicate basis of the geopolymer binding phases is important in bringing high temperature stability. The standardisation (quality control) of feedstocks and the control of efflorescence are two challenges facing the development of commercially mature geopolymer foam concrete technology, requiring more detailed exploration of the chemistry of raw materials and the microstructural development of geopolymers.

Biography:

Zubair has completed his Master from University of Alberta in January 2017. Currently he is Ph.D  candidate in the Department of Agrictulral, Food and Nutritiona Science, Univeristy of Alberta. He is working on the utilization of proteins - renewable resources for industrial processing and synthesis of bio-based polymers

Abstract:

Spent hens: a poultry by-product, have little marketplace and their disposal methods are infeasible so to figure out alternatives which is environment friendly. In this study, proteins were extracted from spent hen by alkali aided extraction method with high recovery yield and purity. These proteins were further modified using glycerol, chitosan and bentonite to increase the value of spent hen proteins. The objective of this work was the improvement of mechanical strength of the protein derived bionanocomposites films. The improvement in physical properties was observed by Transmission electron microscopy (TEM), Dynamic mechanical analysis (DMA), Differential scanning calorimetry (DSC) and Attenuated total reflectance- Fourier transform infrared spectroscopy (ATR- FTIR) . The study revealed, 3% chitosan enhance the mechanical strength of derived films which can be further improved by bentonite addition and it increased to 11.37 MPa that is contributed due to the strong interaction and hydrogen bonding developed between filler and matrix. The thermal stability and water vapor permeability also improved due to the small amount of chitosan and bentonite. The results showed films have the ability to used for food packaging applications.

Biography:

Lewis Muteh Mukum is a Health and Safety Officer at Malaysia Airport Consultancy Services Middle East in Doha, Qatar. He oversees development, implementation and monitoring of health and safety programs in the Maintenance Division of the Consultancy. He holds a Technical Diploma in Carpentry and Joinery and an Advanced Diploma in Computer Maintenance and Information Technology.

Abstract:

In the absence of scientific clarity about the potential health effects of occupational exposure to nanoparticles, a need exists for guidance in decision making about hazards, risks, and controls. An identification of the ethical issues involved may be useful to decision makers, particularly employers, workers, investors, and health authorities. Because the goal of occupational safety and health is the prevention of disease in workers, the situations that have ethical implications that most affect workers have been identified. These situations include the identification and communication of hazards and risks by scientists, authorities, and employers; workers’ acceptance of risk; selection and implementation of controls; establishment of medical screening programs; and investment in toxicologic and control research. The ethical issues involve the unbiased determination of hazards and risks, nonmaleficence (doing no harm), autonomy, justice, privacy, and promoting respect for persons. As the ethical issues are identified and explored, options for decision makers can be developed. Additionally, societal deliberations about workplace risks of nanotechnologies may be enhanced by special emphasis on small businesses and adoption of a global perspective.

Biography:

Yu-Shu Wu has completed his PhD at the age of 29 years from Caltech and postdoctoral studies from Harvard University Division of Applied Sciences. He is a professor of Department of Electrical Engineering, National Tsing-Hua University, Hsinchu, Taiwan.

Abstract:

Graphene electrons possess the interesting degree of freedom known as valley pseudospin, due to the double valley degeneracy at Dirac valleys (K and K’) in the band structure. Such pseudospin is an analog of electron spin and opens up a new type of electronics known as valleytronics. For example, the valley pseudospin can serve as an information carrier for quantum information processing. In this presentation, we will discuss the implementation of valley based qubits - valley pair qubits [1] formed of two quantum dot-confined valley pseudospins, with logic 0 and 1 represented in terms of “valley singlet and triplet states”, respectively. Their manipulation can be electrically achieved with the unique valley-orbit interaction (VOI) in graphene. We will also present a recent expansion [2] in the valley qubit research, namely, the valley-photon quantum state transfer enabled by the electron valley - photon polarization correspondence. As a result, quantum information can flow back and forth between valley and photon qubits, with a possible application in quantum communications.

Biography:

Chih-Ping Chen’s research led to 64 SCI publications with >3000 citations (with an H-index of 31), including two ESI highly cited papers in The Journal of the American Chemical Society, and Nano Letters. He has 10 granted patents.

Abstract:

We prepared water-dispersed carbonized bamboo−derived carbon nano−dot (CND) via thermal dissociation, and following by aqueous extract process. The CND shows high photoluminescence properties at a λem of 430 nm with a particle size of ca. 3-5 nm and containing either COOH or OH functionality. We have found that this CND can served as cathode interfacial layer (IFL) and efficiently increases the power conversion efficiency (PCE) of both fullerene and nonfullerene based organic photovoltaics (OPVs). The embedding of CND showed the effect on the altering the work function and surface roughness of ZnO. The variation of surface status for ZnO/CND further affected the morphologies of the active layers, and the charge selectivity and transportation, thus facilitated the electron transport and extraction of OPV devices providing increase in the fill factor (FF) and short circuit current density (J_sc). The greatest OPV performance was that of the PTB7-Th:PC₇₁BM device incorporating CND—a PCE of 9.6% and a remarkable FF of 72.8%. This performance is one of the best PCE used carbon based IFL materials.

Biography:

Muhammad Naeem Khan has completed his PhD at the age of 30 years from University Brunei Darussalam, Brunei. During his PhD studies, he has one year working experience in Prof. John T.S. Irvine Labs, School of Chemistry, University of St Andrews, UK. He is currently working as assistant professor in Baluchistan University of Information Technology, Engineering and Management Sciences (BUITEMS), Quetta, Pakistan. He has published 04 papers in reputed journal. He has one patent as well published in US Patents.

Abstract:

BaZr_0.1Ce_0.7Y_0.1Yb_0.1O_{3 - δ} (BZCYYb) proton conducting electrolyte material was processed via solid state reaction method and ZnO was added in various wt. %. 1 wt. % of ZnO was found as the optimum amount for obtaining the maximum densification with optimum shrinkage of 24.23%. An increase in the grain size was observed with increase in the sintering temperature from 1300 – 1400 ºC with a maximum relative density of 99.1% at the sintering temperature of 1350 ºC. A maximum value of ionic conductivity of 13.25 x 10^-3 S cm^-1 at 600 ºC was achieved in humidified 5 vol% H₂/Ar atmosphere. The average value of the thermal expansion co-efficient (α) was measured to be 8.53 x 10^-6 K^-1 in the temperature range of 50 – 1100 ºC, which is close to the α value for Pr-based cathode materials. The chemical stability of ZnO-added BZCYYb sample in pure CO₂ up to 1200 ºC was found about 3 times higher than the blank BZCYYb (without ZnO), however still some small peaks corresponding to BaCO₃ and CeO₂ were observed in XRD pattern after chemical stability test. Hence, ZnO-added BZCYYb is a promising electrolyte material for fuel cell applications.

Biography:

Andrey Borzenko has completed his PhD at the age of 29 years from University of British Colmbia and postdoctoral studies from Dalhouse University. He has published more than 10 papers in reputed journals.           

Abstract:

Rapidly growing energy production motivates the development of efficient and safe energy storage. Dielectric materials that we develop demonstrate high polarizability and sufficient resistivity to be candidates for massive inexpensive energy storage. We suggest the use of these dielectric materials as films in the new type of capacitors that would have higher energy density as compared to traditional capacitors.In general, dielectric films in the proposed capacitors should be polarizable, and maintain the polarization energy without breakdown. Hence, film forming species should contain at least two parts, the inner being responsible for the polarization, and the peripheral one having required resistance. Aromatic rings connected by diazo bridges are of great interest for us since similar linkers have been justified for many decades in azo dyes.

The potent material that we develop comprises -N=N-(p-C₆H₄)- subsequently conjugated units, along with electron acceptor group (NO₂) on one side and electron donor -N(n-C₁₀H₂₁)₂ group bearing resistive tails on the other side. Analysis of the crystal structure of the material reveals a head-to-tail arrangement of molecules, forming alternating layers of conjugated cores and resistive tails. Layers formed by tails are responsible for the high resistivity of our material. Corona experiments as well as in-situ Raman spectroscopy demonstrate nonlinear dielectric behaviour of the materials. This behaviour confirms that application of electric field leads to the increase of the polarization. Energy density of our material is estimated to be up to 2 kWh/kg.

Biography:

Zubair has completed his Master from University of Alberta in January 2017. Currently he is Ph.D  candidate in the Department of Agrictulral, Food and Nutritiona Science, Univeristy of Alberta. He is working on the utilization of proteins - renewable resources for industrial processing and synthesis of bio-based polymers

Abstract:

One of the most serious global challenges is inadequate access to fresh water, that is predicted to grow worse in the future as demand continues to rise due to ever increasing world population, rapid industrialization and greater energy needs. Clean water is essential to protect human and any other life on the planet earth. However, one tenth of the global population do not have access to safe drinking water. Conventional approaches such as reverse osmosis, decontamination and disinfection can address many water problems. However, these methods are often chemically, energetically and operationally intensive and, thus require considerable infusion of capital. Herein, we are proposing the development of an integrated low cost, robust and efficient water treatment technology based on graphene oxide/ keratin with a potential to remove metals, organics and pathogens in a single treatment without further stressing environment. In this study, graphene oxide will be modified with the epoxy, keratin will be extracted from chicken feathers and hybridized with modified graphene oxide to develop the membrane. Furthermore, the membrane properties will be evaluated with XRD, AFM, Raman spectroscopy, XPS, solid state NMR and TEM. The water purification performance of the membrane will be tested and compared with the commercially available membranes. This study will open up new horizons to exploit unique properties of both chicken feathers and graphene oxide for water purification.

Biography:

Abstract:

The effects of carbon sphere (CS) and carbon nanotube (CNT) incorporation as carbonaceous template (CT) in the preparation of TiO₂ nanocomposites were compared. Three methods of alcoholic phase sol-gel, aqueous phase sol-gel, and hydrothermal were utilized to form a layer of TiO₂ on the CT and the effect of calcination temperature was studied. All the samples were prepared also in the absence of CT to thoroughly investigate the effect of CT incorporation. The prepared samples were characterized with SEM, TEM, XRD, BET, TGA, and FT-IR. The analysis of results revealed that the TiO₂ nanoparticles formed uniformly on the surface of CS, however, their formation on the CNT was not uniform. Only for the case of CS incorporation in alcoholic phase sol-gel method, CT enhanced the surface area (around 5.7 times). Moreover, the photocatalytic activity of prepared samples was compared based on the enhancement in the amount of hydrogen production by CT incorporation. The results indicated that the highest improvement was related to the incorporation of CS in the hydrothermal method followed by the calcination at 400 ºC that increased the photocatalytic activity 2.8 times.