Nanotecnologia - a construção e utilização de materiais, dispositivos e máquinas na escala nanométrica (atômica / molecular) (1 e 100 nanômetros(nm)), fazendo uso de propriedades únicas que ocorrem naquelas pequenas dimensões e, onde fenómenos singulares permitem novas aplicações

Objective:To demonstrate how the preparation (design) of a material can affect the final material properties and to provide an introduction to composites. Description: This is an experiment with various water to cement (w/c) ratios to determine the amount of water that should be added to a set amount of Portland cement and reinforcement to create a workable cement paste. · The students will evaluate the influence of the w/c ratio on the strength of their reinforced cement paste pucks. · The students will create a new mix design based on the results of the first round of pucks. ◊How much water should be added? ◊How much reinforcement should be added? · The students will evaluate the second mix design in terms of strength of their reinforced cement paste pucks.

Objective: to demonstrate how the motion of atoms under added heat can change the shape of metals Description: · During this demonstration, a nanoscale change is impacting the macroscale. · Shape-memory alloys return to their original shape when heated, while other alloys do not. · Nitinol wire, a shape-memory alloy, will be subjected to heat treatment. · Steel wire will also be subjected to heat treatment. · The behavior of the two wires will be compared and the mechanisms behind each behavior will be discussed.

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