World Congress on Nanotechnology and Advanced Materials July 9-10, 2020 Geneva, Switzerland

Biography:

Abstract:

This workshop provides an overview of different 3D printing techniques that use both rock-like materials (e.g., sand, gypsum, clay) and polymers (e.g., plastics, resins). While these cost-effective methods are shaping the future of manufacturing, 3D printing geological media requires profound understanding of capabilities and limitations of each technique and the material properties used. The workshop includes several modules on how to digitally design and 3D print models for use in geomechanics, reservoir rock analysis, geomorphology, petroleum geology/geophysics, and rock physics. 3D printing of near-identical rock proxies provides an approach to conduct repeatable laboratory experiments without destroying natural rock samples. The workshop also discusses case studies where 3D-printed porous models are used to investigate fundamental research questions in the areas of deformation and fluid flow in reservoir sandstones and carbonate rocks. In addition, 3D-printed models are compared to their digital equivalents to investigate geomechanical and transport properties (e.g., porosity, pore sizes, grain sizes, fracture apertures, connectivity of pore and fracture networks, wettability, stiffness).

Participants will learn how to deploy 3D-printed models to improve technical communication to diverse audiences (e.g., students, geoscientists, engineers, managers, community stakeholders). Participants will gain experience with TouchTerrain app that allows 3D-printable terrain models to be generated. The integration of digital data with 3D-printed surface and subsurface features supports communication for both societal and technical objectives. The course will provide insights on future implementation of 3D printing in geoscience, including reduced costs of 3D printers, open-source software, and free access to digital model repositories. 

Biography:

DECRA Fellow Elnathan obtained his PhD in chemistry in June 2012 from the Centre for Nanoscience and Nanotechnology and School of Chemistry at Tel-Aviv University. He is now a Senior Research Fellow at Monash University with an interdisciplinary research profile and a track record of 33 peer-reviewed journal articles in nanobiotechnology.

Abstract:

The complexity of engineered nano-bio cellular interfaces is extraordinary: well-defined nanomaterial morphologies merge with organic living systems into a powerful nano-bio cellular interface. This is capable of producing revolutionary advances in the life sciences, particularly in cellular nanobiotechnology. Advances in nanofabrication have allowed reliable and reproducible fabrication of diverse 1D nanostructures, including vertically aligned silicon nanowire (VA-SiNW) arrays with adaptable and programmable architecture, and nanostraws with hollow cores. These tuneable vertically configured nanostructures have been instrumental in spurring advances in four main fields of cellular nanotechnology: nanoelectrode-based electrophysiology; biosensing; mechanotransduction; and the focus of this talk – intracellular delivery. Intracellular delivery, the introduction of extrinsic material into cells, is essential for a plethora of biomedical research and clinical applications. For the specific case of cell–nanotopography interactions, the production of customised lithographical mask to grow VA-SiNW arrays with adaptable and programmable designs by means of metal assisted chemical etching (MACE), and, alternatively deep reactive ion etching (DRIE) have proven to play a central role in probing key cellular function and behaviour. Crucially, and different from existing alternatives for fabricating VA-SiNW, this bottom-up/top-down combination allows precise control of NW etching site locations, enabling independent control of SiNW-element spacing and diameter and more complex and hierarchical architectural designs. In particular, engineered cell–nanostructured interfaces driven by VA-SiNW arrays are now playing a key role as a platform for orchestrating key cell functions, behaviours, and fate conversions. The key advantage of VA-SiNW arrays lies in their enhanced interaction at the interface between cells and NWs due to their nanoscale dimension, enabling the bidirectional informational flow – biochemical/biophysical signals from or to the intracellular environment. Achieving greater control over adjustable structural design and fabrication of nanoscale substrate topographies will increase the likelihood of their incorporation into a broad range of life-science applications, including delivery of bioactive cargos at the subcellular level, as well as the influence of extracellular cues on cellular processes.

Biography:

Abstract:

Biography:

Mohammed received his B.Sc in Pharmaceutical Engineering from Azrieli – College of Engineering, Jerusalem, Israel (2014), and his MSc in Medicinal Chemistry from the Hebrew University, Jerusalem, Israel (2017). He is co-author of two papers from his MSc studies. His doctoral research is multi-disciplinary, at the interface of nanotechnology, engineering and medicine. Specifically, Mohammed is devoting his efforts towards developing a new approach for treating metastatic Oral Cancer with nanotechnology.

Abstract:

Oral cancer is the sixth most prevalent cancer worldwide. Specifically, squamous cell carcinoma (SCC) accounts for over 90% of all head and neck cancers, and the overall survival rates are only 40–50%. Over the past decade incidences of oral cancers have risen by 35%, with limited treatment modalities. Administering anti-cancer agents in close proximity to the cancerous lesion has proven clinically effective when dealing with head and neck tumors. To date, no drug delivery system for the controlled administration of anti-cancer agents to the oral cavity exists in the clinic. Herein we propose a new type of hybrid system, composed of bio-adhesive polymeric matrixes (alginate) that harbor drug-loaded lipid nanoparticles. The polymeric matrix is engineered to adhere to the oral mucosa for the duration of the drug release, and the nanoparticles (liposomes) are designed to penetrate the tissue and release different therapeutic agents (chemotherapy/ proteins). Our system successfully reduced tumor size by more than 50%. Additionally, we demonstrate the liposomes’ potential to act as theranostic agents by encapsulating the contrast agent, Gadolinium. This dual potential of the fabricated liposomes paves the way for therapeutic as well as diagnostic modalities for early detection and treatment of oral cancer.

Biography:

Dr. Masood has completed his Ph.D in 2009 from University of Kashmir, India and postdoctoral from Indian Institute of Technology-Delhi (IIT-Delhi), India. He is working on ‘Synthesis and Properties of Nanomaterials/Materials for Photocatalytic, microwave dielectric, water purification, fuel cell and field emission propeerties. He worked as assistant professor in various places like University of Delhi, University of Kashmir, National Institute of Technology-Srinagar, India. Presently he is working as a faculty in the department of Chemistry, Higher College of Technology-Muscat, Sultanate of Oman.

Abstract:

Increasing demand for new and advanced nanomaterials/materials has motivated a significant research in wireless communication technology and solid oxide fuel cell applications. The present investigation discusses the synthesis and dielectric properties of three series of oxides of the formula La₂BaTi₂M_1-xCu_xO₉, (where M = Mg, Zn and Cd). All the compositions crystallize in the disordered cubic perovskite structure. Suitable substitution at both A and B sites lead to enhancement in the dielectric properties at high frequencies. The relative permittivity and loss tangent have been measured at X-band (8.2-12.4 GHz) and Ku-band (12.4-18 GHz) frequencies. The oxides show a dielectric constant of 20-30 while the dielectric loss is quite low in the order of 10^-3-10^-4 (at 500 kHz) and 10^-2 at X and Ku-band. There is scope for further investigations in these systems to realize useful materials for microwave applications. Moreover, Homogeneous nano crystalline NiO-Ce_0.9Ln_0.1O_2-δ  (Ln = La, Sm and Gd and Pr) composite anode and nano crystalline Ce_0.9Gd_0.1O_2-δ  electrolyte material has been successfully synthesized by citrate precursor method. LSCF has been synthesized by conventional solid state method and used as cathode material in our studies. The synthesized powders have been characterized by powder X-ray diffraction, microscopy and surface area studies. The average crystallite size of the anode materials has been found to be in the range of 5-15 nm by transmission electron microscopy. Highly dense electrolyte and porous electrode materials have been observed by field emission scanning electron microscopy and confirmed by BET surface area studies.  Three cells have been fabricated successfully. The electrochemical performance of the single cells with configuration NiO-Ce_0.9Ln_0.1O_2-δ (Ln = La, Sm and Gd) (anode) // Ce_0.9Gd_0.1O_2-δ (electrolyte) // La_0.8Sr_0.2Co_0.2Fe_0.8O₃ (LSCF) (cathode) have been evaluated using humidified hydrogen as the fuel and air as the oxidant.  It has been observed that the single cell containing NiO-Ce_0.9Gd_0.1O_2-δ nano composite anode shows better performance with maximum power density of 302 mW cm^-2 and open circuit voltage of 1.012 V at 500 ^°C compared to other two cells. The difference in the performance of the cells containing Ni-LDC and Ni-SDC anode as compared to Ni-GDC anode is due to changes in the microstructure and crystallite size of the anode which affects the electrochemical performance of the cells. The performances of all the cells containing nano composite powders are suitable anode materials for low temperature SOFCs

Biography:

Prof. Sundara Ramaprabhu is EG Ramachandran Institute Chair Professor at the Indian Institute of Technology Madras, India and working in nanotechnology, hydrogen energy technology,  fuel cell technology, Battery. He has guided 38 Ph.D. students and 1 MS and 40 MSc/MTech projects. He is a member of the American Chemical Society and a member of the Electrochemical Society. He has authored 378 international journal publications and published 50 patents.

Abstract:

Multiwalled carbon nanotubes (MWNT) have interesting electrochemical properties that can be used for the energy storage application. High quality MWNT are prepared by catalytic chemical vapor deposition method using carbon precursors. However, the practical application of MWNT is limited by the current techniques to provide large scale production. The selective choice of the catalyst can enhance the yield of MWNT. Herein, diatom supported metal-alloy based catalyst is used for the growth of MWNT. The cost of production of MWNT is further cut down by the use of liquefied petroleum gas as the precursor.  The synthesised MWNT are uniform in diameter and the method of production does not require any process of purification.  MWNT along with the catalyst frustule is used as the high capacity anode for the lithium-ion battery. The interaction of lithium ions with both MWNT and diatom increases the specific capacity to 1090 mAh g^-1 at 0.05 A g^-1 with cyclic durability of 2000 cycles. This work demonstrates a scalable method of production of MWNT from a cost-effective catalyst with the benefit of utilizing it as a high capacity anode material for lithium-ion battery. 

Biography:

Prof. K. S. Ghosh has completed his PhD from Indian Institute of Techonology, Kharagpur. He is the Professor of Department of Metallurgical and Materials Engineering, National Institute of Technology, Durgapur, India. He has published more than 48 papers in reputed journals and has served as executive member of of publication of Transaction, Indian Institute of Metal, Kolkata for five years and Editor of Metal News in one year.

Abstract:

AA2014 Al-Cu-Mg-Si alloy is subjected to precipitation treatment and hardness measurement of the alloy showed typical age hardening behaviour. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) studies revealed the presence characteristic phases. Differential scanning calorimetry (DSC) study displayed the solid state precipitation and dissolution sequence reactions in the alloy. Electrochemical behaviour were assessed by measurement of open circuit potential (OCP) variation with time, potentiodynamic polarization and cyclic polarisation of the alloy of various tempers in 3.5 wt.% NaCl solution at near neural (pH ~ 7) and at alkaline (pH 12) conditions as well. Potentiodynamic polarisation studies showed that the corrosion potential (E_corr) value has shifted toward more negative (active) direction with increasing ageing time in the NaCl solution at pH7. The cyclic polarisation displayed active-passive behaviour in 3.5 wt.% NaCl solution at pH 12 and also showed a large hysteresis loop indicating high pit growth damage. Further, electrochemical impedence spectroscopy (EIS) study in 3.5 wt.% NaCl solution with small amount of lanthanum chloride (LaCl₃.7H₂O) exhibiting much low depressed semi-circle indicated lanthanum chloride is a very good corrosion inhibitor of Al-alloys. The observed corroded surfaces of the alloy showed pitting, an individual and clusters as well, and the pits mouths covered with corrosion products.

Biography:

Abstract:

magnetic resonance imaging have been used nowadays as one of the accepted tool for diagnosis, estimation, and evaluation of many of human been disease; in dentistry, many of prosthodontics patients and "maxillofacial-prosthesis" patients may fall under the category who might be subjected to routine "MRI" check-up either for follow-up of certain disease or cancer patient for determination the degree of healing or metastasis, thus, there has been growing interest in the research of the possible effect of "MRI" procedure on different component of "dental appliances" wears by those patients and one of these components is "heat cured acrylic resin".

Material and methods: total samples of (454) were prepared from acrylic based heat cured denture material, which divided into two main groups "Clear, Pink", each main group was subdivide, into four groups according to exposure to "MRI" control;(5,15 ,30)minute each of the four sub-groups undergo different tests" tensile strength,  hardness(Rockwell) test, dimensional accuracy test, color change by spectrophotometery, surface roughness, water sorption, residual monomer release "FTIR" and "NMR".

Conclusions: it was concluded that exposure to "MRI" at different periods of time lead to altering of some physical properties at different level of significant with the exception for one to two experiments water sorption and residual monomer  which showed less significant than other tests done. Also, FTIR and NMR tests demonstrated a change in vibration of bonds  between two, atoms but without rotation of molecule  without alter the main chemical structure of material.

Biography:

Abstract:

Novel method for the covalent immobilization of recombinant thermostable α-amylase enzyme has been introduced by this research. Thermostable α-amylase was successfully expressed in E. coli and further purified. Thermostable α-amylase was immobilized on the surface of magnetic nanoparticles coated with silica by the carbodiimide activation. Immobilized enzyme was further characterized and the stability and activity of free and immobilized enzyme was evaluated. FT-IR analysis confirmed the immobilization of enzyme with magnetic nanoparticles. Low enzyme loading (6 mg/ml) was responsible for the efficient activity of enzyme after immobilization by carbodiimide activation. Immobilized enzyme showed significant activity at neutral and acidic pH. In addition, better resistance of α-amylase to the inhibitory effect of metal ions and inhibitors was observed after immobilization. Immobilization with magnetic nanoparticles ensured fast and efficient recovery. Enzyme showed increased activity even at higher temperature of 100ºC after immobilization. The reusability factor of immobilized α-amylase was also evaluated and enzyme retained 50% of its activity after 30 consecutive operations at 90ºC. Successful optimization and characterization of α-amylase bound magnetic nanoparticles achieved in this research could prove to have significant benefits for the starch hydrolysis and ethanol industry. It offers a more economical approach for biofuel production.

Biography:

sepideh studied Genetic at the Islamic Azad university of zanjan, Iran and graduated as Bachelor in 2013. she then worked in lab for 1 year. She received her master degree in 2018 at the same institution.

Abstract:

Breast cancer is regarded as the most common cause of death after lung cancer among the women. Using graphene quantom nanoparticles (GQNPs) to construct a biosensor increases the sensitivity, rapidness and flexibility of biological tests to detect a single cancer cell in biological studies. We developed a highly sensitive fluorescence immuno-nanobiosensor with wide linear response based on GQNPs and magnetic nanoparticles (MNPs) for selective detection of HER2-positive breast cancer. The GQNPs and MNPs were conjugated with Herceptin antibody and the conjugation was confirmed by many physicochemical studies. Then the conjugates were exposed to the SKBR-3 breast cancer cells to form the sandwich structure of MNP-Herceptin- SKBR-3 cell-Herceptine-GQNP. Then, a fluorescence microscope was used to detect the breast cancer cells after isolating them by a magnetic field. The studies showed the high sensitivity (1 cell mL^-1) and specificity of the designed biosensor for detection of SK-BR3 cells within 30 min.

Biography:

Abstract:

Recently Squaraine dye have been receiving the interest of researchers due to its improved solution process ability, scalable synthesis, tunable chemical and physical properties via molecular design and of course its low cost. However, problems of compatibility and wet-ability have limited broad application of Squaraine dye. In this study, we used octavinyl-polyhedral oligomeric silsesquioxane OV-POSS to prevent all these problems and to enhance the dye properties. This is the first time to designed a novel near-IR absorption multifunctional materials over a wide PH (2- 9) with excellent properties of compatibility. A novel system of organic-inorganic hybrids optical material near-IR was prepared by OV-POSS with 6-Bromoquanaldine and Squaric acid to get system1 of (OV-POSS-Squaraine) then reacted with 4-bromaniline to get our last system OV-POSS-Squaraine-amine. Our structure, composition, properties were characterized and evaluated by 1 HNMR spectrum, contact angle and FE-SEM. we believe that the novelty would open new path for more synthesis and applications.