Yaser Abdi

Professor, Department of Physics, University of Tehran, Iran

Title:

2D materials for opto-electronic applications

Abstract:

Utilizing two-dimensional (2D) materials in fabrication of opto-electronic devices may supply new device concepts with higher performance. As a prototype class of 2D and three-dimensional (3D) hybridization, vertical junction of 2D materials/silicon has been intensively studied in a variety of electronic and optoelectronic applications. In this talk I will present application of Si-based vertical junctions for fabrication of broadband and high sensitive detectors.

http://physics.ut.ac.ir/~abdi/

Google Scholar-Prof. Abdi

 

 

 

Habib Bagheri

Professor; Department of Chemistry, Sharif University of Technology, Iran

Title:

Nanostructured novel modified materials for analysis of complex samples

Abstract:

Within the last decades, considerable awareness concerning the effect of trace levels of chemicals on the environment and human health is rising. Although reliable analytical instruments and methods toward identification and trace determination of contaminants in environmental samples have been continuously improved, due to the matrices complexities and insufficient instrumental sensitivity, the development of sample preparation techniques have remained a remarkable requirement. Among them, solid phase- based extractions are quite attractive [1] . Generally, most common commercial sorbents are relatively expensive while have considerable carry-over and low sensitivity [2]. To overcome these shortcomings, the preparation of these materials and their implementation as the desired extractive phases has remained an important task. Various types of materials such as conductive polymers [3], sol–gel-based structures [4], electrospun nanofibers [5], carbons [6], superhydrophobic compounds [7] and coordination polymers [8] have been implemented as effective extractive phases.

In this presentation, the synthesis of different nano- and micro-materials and their implementation as effective media to isolate hazardous chemicals and drugs from different samples are discussed. Extractive phases based on hybrid inorganic–organic nanostructures or metal organic frameworks (MOFs) as a new class of crystalline porous nano-structures, amine–modified lignin, polycaprolactone nanofiber/silica mesopores, modified carbons and the ultrasound‒assisted formation of carbon dots (CDs) in a metallic deep eutectic solvent are extensively discussed. Eventually their implementation in detection of pollutants in aquatic media and other challenging eatable samples such as meat will be presented.  

http://sharif.edu/~bagheri/Bagheri.htm

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Davide Barreca

Research Director, ICMATE-CNR, Padova, Italy

Title:

Towards an efficient and sensitive detection of hazardous chemicals by metal oxide nanosystems

Abstract:

The early detection of flammable/harmful gases, such as molecular hydrogen, a strategic energy vector, and chemical warfare agents (CWAs), dangerous weapons producing lethal and irreversible damages, is an open issue of utmost importance for health protection and public security. In this context, chemoresistive gas sensors based on metal oxide nanosystems offer manifold advantages, including low processing cost, easy miniaturization and high sensitivity. Up to date, however, the use of such systems for CWA detection has been explored in a relatively limited number of contributions in comparison to the sensing of other analytes, mainly due to issues related to material stability and poisoning effects of the sensor surface, compromising the resulting functional performances. In spite of the efforts undertaken so far, the quest of stable and active sensors endowed with higher operational stability, lower detection limits and enhanced selectivity still represents a main obstacle to be overcome in order to meet the actual technological requirements.

This contribution will provide an overview of selected results obtained by our research group in the vapor-phase fabrication and characterization of metal oxide nanomaterials as chemoresistive sensors of: i) molecular hydrogen; ii) CWA simulants compatible with laboratory security standards. In particular, efforts will be devoted to discussion of the following systems:

-            Mn3O4 nanomaterials, both bare and functionalized with metal nanoparticles, for the detection of CH3CN, dimethyl methyl phosphonate (DMMP) and di(propylene glycol) monomethyl ether (DPGME), used as simulants for cyanide agents, Sarin nerve gas and vesicant nitrogen mustard, respectively [1,2];

-            MnO2 nanostructures, both bare and functionalized with CuO or SnO2, for the sensing of H2, CH3CN, DMMP and DPGME, with particular regard to the possibility of discriminating between the target analytes depending on the functionalizing species, already at moderate working temperatures [3,4].

The presentation of the most representative data will be aimed at highlighting the current research status and open challenges in the field.

Keywords: metal oxides; nanosystems; chemoresistive gas sensors; chemical warfare agents

https://www.icmate.cnr.it/en/people/card/153-davide-barreca

Google Scholar-Prof. Barreca

 

 

 

José-María Cabrera-Marrero

Professor, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya, Barcelona, Spain

Title:

"Challenges to link the gap between research and industrial application of severely deformed metals"


After a short historical introduction I would center on actual SPD processing routes, and then I would comments about the main challenges to be faced to scale up from the lab to the industry in order to increase the technology readiness level (TRL) of SPD processes.

 

https://futur.upc.edu/JoseMariaCabreraMarrero

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Flavio Deflorian

Full Professor, Department of Industrial Engineering, University of Trento, Italy

Title:

Properties of Polypyrrole coatings on rheocast aluminum‐silicon alloy

 

 

https://webapps.unitn.it/du/en/Persona/PER0003637/Curriculum

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Ramin Ebrahimi

Professor, Department of Materials Science and Engineering, Shiraz University, Iran

Title:

Abilities and Developments of Simple Shear Extrusion as an Efficient Technique to Produce Ultrafine Grained and Nanostructured Materials

 

 

https://cme.shirazu.ac.ir/en/~rebrahimi

Google Scholar-Prof. Ebrahimi

 

 

 

Stefano Gialanella

Associate professor, Department of Industrial Engineering, University of Trento, Italy

Title:

SEM and TEM based characterization of particulate matter from disc-brake wear

Abstract:

The un-regulated non-exhaust emissions from automobiles are a cause of concern across the world. In particular, disc-brake wear contributes a significant fraction of particulate matter (PM) in the fine (PM2.5) and ultrafine (PM0.1) range. An exhaustive analysis involving single particle analysis (SPA) of the constituents of these micro/nano-sized materials is the way forward for the development of clean materials for the disc brakes, and also for understanding the relevant wear mechanisms. In this regard, electron microscopy provides a broad range of investigation tools from microstructural, structural, and compositional standpoints. Scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDXS) favors relatively simpler sample preparation and can provide the morphology and elemental composition of the particles that are too thick for transmission electron microscopy (TEM) based analysis. As for TEM, although the sample preparation could be quite challenging, still, again in association with EDXS, it provides information at a much higher spatial resolution. Moreover, with the incorporation of electron diffraction data, yields direct information of the crystallographic structure. A combined analysis of the two approaches is particularly effective for analyzing the complex thermo-mechanical-chemical transformations taking place between the brake pads and disc. In this paper, this combined methodology was applied to the airborne PM collected during bench and lab tests on disc brake systems. The tests were designed in a way to rank the particles based on their respective sizes using impactors, and were collected on suitable substrates, although not always appropriate for materials characterization purposes. Whenever required, appropriate sample preparation protocols have to be followed in the case of both SEM as well as TEM samples, with a focus on not altering the pristine and original features of the particles during the extraction stage from the substrates. In particular, reliable information could be obtained from a very small amount of particles, which is often a constraint in the case of other bulk characterization techniques.

Keywords: particulate matter; scanning electron microscopy; transmission electron microscopy; brake pads, X-ray spectroscopy

https://webapps.unitn.it/du/en/Persona/PER0004889/Didattica

Google Scholar-Prof. Gianalella

 

 

 

Manoj Gupta

Associate professor, Department of Mechanical Engineering, National University of Singapore, Singapore

Title:

Light-weighting the Light Magnesium Based Materials

 

 

https://www.eng.nus.edu.sg/me/staff/gupta-manoj/

Google Scholar-Prof. Gupta

 

 

 

Seokwoo Jeon

Professor, Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST)​, Korea

Title:

Applications Realized by Large-area, Ordered Porous Ceramic Architectures Made by PnP

Abstract:

Numerous three dimensional (3D) nanofabrication methods have been proposed for novel applications in mechanical metamaterials. However, highly periodic 3D fabrication in large area and volume has limited success. Here I present our recent efforts to expand the limit in size of highly periodic 3D nanostructures through Proximity field nanoPatterning (PnP) which uses conformal phase masks with outstanding scalability and easiness of the large area patterning. After brief overview of 3D nanofabrication technique and potential application fields, mechanical behaviors of nanocomposites based on 3D nanostructures will be discussed. Current applications are stretchable light scatter, interphase boundary nanocomposites (ceramic-polymer, ceramic-metal). The change of optical and mechanical behavior by changing the constitute materials and the geometry and thickness of cellular materials will prove the importance of structural motif in submicron, ordered porous materials and composites.

Prof. Jeon

https://scholar.google.com/citations?hl=en&user=qSKYGXIAAAAJ&view_op=list_works&sortby=pubdate   

 

 

 

Yusheng Li

Professor, Nanjing University of Science and Technology; Nanjing, China

Title:

Hetero-nanostructured stainless steel - from preparation to application

 

 

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Hamid Reza Madaah Hosseini

Professor, Department of Materials Science and Engineering, University of Sharif, Iran

Title:

An open window towards a new-emerging generation of applications for nanostructured aluminium titanate

Abstract:

Until recently, aluminium titanate (Al2TiO5 or AT) has been known as a refractory ceramic with a high thermal shock resistance and sufficiently elevated melting temperature. This was the reason why the literature were studying the mechanical and thermal properties of this traditional material and its thermal decomposition in a broad spectrum of operational conditions, because they believed that the thermal dissociation of this ceramic deeply changes its mechanical properties. For instance, any phase transformation in the crystal structure of aluminium titanate can develop microcracks throughout the hard matrix, serving as stress concentration centers. No one has paid the attention to other features of this ceramic and developed new applications for it. In 2014, our research team focused on the chemical synthesis of aluminium titanate in the nanostructured form and strived to reduce its particle size down to 100 nm. After the successful synthesis, a deep characterization was performed from crystallographic and phase transformation perspectives. It paved the way for more survey on the chemical reaction of AT with metallic powders. For the first time, our team fabricated an in-situ hybrid Al-Al3Ti-Al2O3 nanocomposite based on pure aluminium and AT by hot pressing and hot extrusion. In 2018, it succeeded in discovery of photocatalytic activity of this nanostructure and evaluated the effective parameters on its activity in removing the pollutants from the aqueous media. In 2020, following the outbreak of Covid-19 pandemic, urgent need for the antibacterial materials increased. Our team tried to dedicate the antibacterial activity to AT so that it can be applicable in the antibacterial paints, coatings, and textiles. This trust is ongoing and promising results are obtained. Most recently, we work on other applications including the water splitting and semi-conductivity of this valuable material.

http://sina.sharif.ir/~madaah/

Google Scholar-Prof. Madaah

 

 

 

Soroush Nazarpour

CEO at NanoXplore Inc., Montreal, Canada

Title:

Recent Developments in the World of Graphene



Linkedin-Dr. Nazarpour

 

 

 

Seeram Ramakrishna

Professor, Department of Mechanical Engineering, National University of Singapore, Singapore

Title:

Build Back Better Materials World to Deal with the Existential Threats to Humanity - Reimagine Materials

Abstract:

Inspired by the concern for humanity, authors of 1972 book The Limits to Growth professed problems affecting the habitability of planet Earth for today’s as well as future generations. Since then they were further refined and articulated.  More recently, in the form of United Nations seventeen Sustainability Development Goals, SDGs. Sustainability is about reduction of greenhouse gas emissions as well as circular solid waste management to reduce environmental pollution and waste accumulation in the nature, to protect human health, to alleviate resources depletion and environmental deterioration, to regenerate biodiversity, and to overcome rising sea levels and extreme weathers caused by climate change for the well being of humans and preserving Earth for the future generations.  The climate change articulation gained the attention of many people.  And yet only a small fraction of humanity as well as capital investors are prepared to act on the sustainability solutions.  Thus, sustainability articulations in the name of carbon neutral economy, low-carbon economy, circular economy, and science based sustainability targets with the promise of quality living conditions, jobs and economic growth, are advocated by the governments and captains of industry.  There are many facets and dimensions to myriad articulations. 

Materials are central to the humanity’s sustainability efforts.  According to recent papers published in the Nature journals, about 23% of global emissions can be attributed to materials production, and the global human made mass now excceds all living biomass of Earth.  It is implicit to reimagine materials or build back better materials world so as to mitigate the existential threats to the humanity i.e. environmental degradation and biodiversity loss. 

Materials - Emissions and Waste Burden

Modern human life is built on materials advancements and exponential consumption of them. Materials development over the past three centuties is aimed at meeting the cost and functional performance requirements, and searching for special or unique material properties observed never before.  This can be evidenced by the significant research investments in recent years to conceive high performance materials and intelligent materials.  Materials education at more than 20,000 higher education institutions around the world is focused on theories and classification of materials, processing-microstructure-property relationships, and applications.  Infusing materials education with sustainability aspects is recent, and only taking place at a small number of universities.  Lack of suitable text books and core scientific principles are often cited reasons for this situation. Going forward this is untenable as the humanity is hard-pressed to mitigate existial threats.  Hence, mainstreaming of materials sustainability education is necessary and important.   

Nature of materials in the generation of emissions and waste is underestimated.  Henceforth, the materials research and innovations should also be aimed at lowering the carbon foot print of materials and enhancing the circulaty of materials. This calls for reimagining materials from atoms and molecules, as well as harnessing nanoscience, single atom science, and quantum science. They are in addition to ecofriendly design and materials efficiency of products, low carbon materials from renewable and local sources, resources efficient processes, more circular end of life waste management practices while not sending waste to the poorer communities, and switching to renewable energies to eliminate or reduce the waste and emissions at all stages.  Furthermore, the traditional knowledge of materials laced with sustainability by the former civilizations has been either ignored or lost.  It is valuable to systematically investigate and document the traditional knowledge of materials around the world and integrate it with the modern science and engineering of materials.

Chemicals - Health Burden

A common thread of UN SDGs is human health and wellbeing.  The World Health Organization (WHO) reports suggest that human milk or breast milk is the best source of nutrition for infants, and furthermore, imparts enhanced protection from chronic diseases such as asthma and diabetes and mental health resilience in the adulthood too.  Unfortunately, contamination of human milk with toxic chemicals and heavy metals are reported around the world. Chemicals found in drugs and manufactured materials and products enter the human body via all routes, which include ingestion, dermal exposure and inhalation.  Chemicals accumulation in human tissues may disrupt the interdependent organ systems of human body. For example, the endocrine disrupting chemicals or EDCs may be one of the reasons for declining fertility rates in Europe, USA, China, Japan, South Korea and Singapore.  The average birth rate of Singapore was 5.8 in 1959 and now it is 1.1.  The current fertility rates of USA, Japan, China, and South Korea are 1.6, 1.34, 1.3, and 0.84, respectively.

Most chemicals come to wide spread use based only on their technical, availability and cost performances. The vast majority of these, however, were never tested for unintended human side-effects. Henceforth, aim scientific research to develop human health friendly chemicals. Sustainable or green chemistry and adequately tested safe chemicals should only be allowed to enter market so as to ensure the resiliency of humanity.  Efforts must be made to anticipate the human side-effects, and forestall health burden prior widespread introduction of new chemicals and materials. 

A clarion call to millions of researchers worldwide to reimagine materials or build back better materials and tackle triple expectations of future materials together i.e. enhanced functional performance, sustainability performance, and zero-negative health effects. Ultimately, materials should not be the bottleneck for ensuring the sustainability of humanity.

https://blog.nus.edu.sg/seeram/

Google Scholar-Prof. Seeram

 

  

 

 

Kengo Shimanoe

Professor, National University Corporation Kyushu University, Functional Materials Science, Kyushu University, Japan

Title:

Functional Devices Using cAxis-Oriented Apatite-Type Lanthanum Silicate as new solid electrolyte

 

 

http://www.mm.kyushu-u.ac.jp/lab_03/en/index.html

Google Scholar-Prof. Shimanoe 

 

 


 

 

Nobuhiro Tsuji

Professor, Department of Materials Science and Engineering, Kyoto University, Japan

Title:

"Fully Recrystallized Ultrafine Grained Metals Managing both High Strength and Large Tensile Ductility"

 

http://www.tsujilab.mtl.kyoto-u.ac.jp/01TsujiLab/Member/Tsuji/index.html
 

Google Scholar-Prof. Tsuji 

 

Ruslan Valiev

Professor, founder and Scientific Director of the Institute of Physics of Advanced Materials, Ufa State Aviation Technical University since 1995, Russia

Title:

Recent Findings on Paradoxes of Severe Plastic Deformation

Abstract:

 Recent studies in processing of metallic materials by severe plastic deformation (SPD) techniques clearly showed that target nanostructuring can result in their paradoxial properties that usually are not typical for the materials subjected to conventional thermomechanical treatment. Such paradoxes constitute the combinations of high strength and ductility, demonstration of high strength and electrical conductivity, increased corrosion resistance and other. Herein, unusual combinations of mechanical and functional properties are reported following recent results and findings on a number of metallic materials processed by SPD as well as the physical mechanisms that are key to their origin associated with various nanostructured features from grain refinement to nanoscale and phase transformation. High innovation potential for application of these multifunctional materials in engineering and medicine is considered and discussed.

Keywords: severe plastic deformation; nanostructured materials; grain refinement; strength and ductility

http://www.ipam.ugatu.ac.ru/people/valiev.html

Google Scholar-Prof. Valiev