Nanoscience and Nanotechnology in Engineering

Varadan, Vijay K.; Pillai, A. Sivathanu; Mukherji, Debashish; Dwivedi, Mayank; Chen, Linfeng

doi:10.1142/7364

Cited by 25 publications

(12 citation statements)

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“…Integration of 21 st -century sciences allows students to immediately connect school chemistry with their daily life occurring (Blonder & Dinur, 2012;Blonder & Sakhnini, 2012;Laherto, 2012;Schank, Wise, Stanford, & Rosenquist, 2009). One possible way is by having nanoscience in the curriculum as it is noted that nanoscience act as a bridge which links the chemistry concepts with daily life application (Varadan, Pillai, Mukherji, Dwivedi, & Chen, 2010).…”

Section: Eurasia J Math Sci and Tech Edmentioning

confidence: 99%

Integrating Nanoscience Activities in Enhancing Malaysian Secondary School Students’ Understanding of Chemistry Concepts

Chua

Karpudewan

2019

EURASIA J MATH SCI T

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This study reports the effectiveness of nanoscience activities in enhancing secondary school students' understanding of two chemistry concepts: structure of atom and acid and bases. For the purpose of this study, quasi experiment was employed to 163 Grade 10 students from the Northern Region of Malaysia. Sample from the experimental group was exposed to a series of nanoscience activities lasted for 10 weeks. Students' understanding on the two chemistry concepts was tested using Chemistry Achievement Test (CAT). The CAT consists of multiple-choice questions and openended questions. Data obtained from CAT was analysed using one-way ANCOVA to identify the effectiveness of nanoscience activity in enhancing students' understanding of chemistry concepts. The findings show that there were statistically significant differences between experimental and control groups' mean scores (F (1,160) = 167.82, p < 0.05 ηp 2 = 0.512) with the experimental group students reporting higher mean. The ANCOVA result indicated experimental group students' understanding of chemistry concepts significantly higher than the comparison group. The qualitative analysis of open-ended responses further supports findings obtained from the quantitative analysis. The study suggests that integrating nanoscience into the contemporary teaching of chemistry is relevant and appropriate.

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Section: Eurasia J Math Sci and Tech Edmentioning

confidence: 99%

Integrating Nanoscience Activities in Enhancing Malaysian Secondary School Students’ Understanding of Chemistry Concepts

Chua

Karpudewan

2019

EURASIA J MATH SCI T

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“…A hydrogen atom has a diameter of about one tenth of a nanometer and it takes six bonded carbon atoms to reach a nanometer width. In Nature there are innumerous examples of the nanoscale but one of the most interesting in the ''civil engineering context'' is the 1-2 nm hydrophobic wax crystals that cover lotus leaves and are responsible for their selfclean ability (Varadan et al 2010). This new field encompasses a holistic way of perceiving the potential of natural systems (Martin et al 2010) in which traditional and predominant anthropocentric views are replaced by more eco-centrically approaches (Hofstra and Huisingh 2014) as prerequisite in order to build a sustainable future.…”

Section: Civil Engineering: the Rebirth Of An Obsolete Curriculum Thrmentioning

confidence: 99%

Introduction to Biotechnologies and Biomimetics for Civil Engineering

Pacheco-Torgal

2014

Biotechnologies and Biomimetics for Civil Engineering

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This chapter starts with an overview on the sustainable development crucial challenges. The ones directly or indirectly related to the field of civil engineering are highlighted. These include greenhouse gas emissions (GHG) related to the energy consumption of the built environment, aggravated by urbanization forecast expansion, and the recent increase in building cooling needs due to climate change. It also includes the depletion of nonrenewable raw materials and mining-related environmental risks in terms of biodiversity conservation, air pollution, and contamination of water reserves. Some shortcomings of engineering curriculum to address sustainable development challenges (especially civil engineering) are described. Possible contributions of biotechnologies and biomimetics to sustainable development and the rebirth of civil engineering curriculum are suggested. A book outline is also presented. 1.1 Sustainable Development Challenges Four decades ago several investigators used a computer model based on the fixedstock paradigm to study the interactions between population, food production, industrial production, pollution, and the consumption of nonrenewable resources. As a result, they predicted that during the twenty-first century the Earth's capacity would be exhausted resulting in the collapse of human civilization as we know it Meadows et al. (1972). Two decades after that an update of this study was published showing that some limits had already been crossed (Meadows et al. 1992). Rockström et al. (2009) recently proposed a new approach to global sustainability defining nine interdependent planetary boundaries within which they expect that humanity can operate safely. This include:

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“…The enumeration of physical methods of nanomaterial preparation cannot be completed without the lithographical techniques. These techniques enable only fabrication of nanostructural layers [108].…”

Section: Introductionmentioning

confidence: 99%

Physicochemical Aspects of Metal Nanoparticle Preparation

Kvı́tek¹,

Prucek²,

Panáček³

et al. 2020

Engineered Nanomaterials - Health and Safety

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Physicochemical properties, including optical properties or catalytic activity, and biological properties of metal nanoparticles are considerably influenced by their diameter. Therefore, a tailored synthesis of metal nanoparticles represents a key topic in the field of nanotechnology, and the number of research papers, concerning this topic, has been annually growing with an arithmetic progression. Metal nanoparticles are most frequently prepared via chemical reduction of metals in ionic form from their solutions. Using this synthetic approach, tailored parameters of the particles can be achieved via the adjustment of numerous factors: difference of potentials of the metal redox system and the reducing agent redox system, pH of the reaction mixture, and its temperature. The influence of these three factors on the diameter of the prepared metal nanoparticles will be discussed in the following chapter with respect to general laws and based on numerous examples from research practice.

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Nanoscience and Nanotechnology in Engineering

Cited by 25 publications

References 0 publications

Integrating Nanoscience Activities in Enhancing Malaysian Secondary School Students’ Understanding of Chemistry Concepts

Integrating Nanoscience Activities in Enhancing Malaysian Secondary School Students’ Understanding of Chemistry Concepts

Introduction to Biotechnologies and Biomimetics for Civil Engineering

Physicochemical Aspects of Metal Nanoparticle Preparation

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