PowerPoint Presentation

[Audio] The nano world presented by Harleymon Russel Leonardo, Alyssa Marie Posada and Shiena Joy Terrobias.

[Audio] In the timeline of technological advancement, Nanotechnology is the sixth revolutionary technology introduced in the modern world by late 90s..

[Audio] So what is nanotechnology? Nanotechnology is the understanding and control of matter at the nanometer scale, where unique phenomena enable novel applications. Encompassing nanoscale science, engineering, and technology, nanotechnology involves imaging, measuring, modeling, and manipulating matter at this length scale. Nanotechnologies involve the design, characterization, production, and application of nanoscale structures, devices, and systems that produces structures, devices, and systems with at least one novel/superior characteristic or property..

[Audio] At the core of nanotechnology is the fact that the properties of materials can be different at the nanoscale for two main reasons: First, nanomaterials have a relatively larger surface area when compared to the same mass of material produced in a larger form. This can make materials more chemically reactive (in some cases materials that are inert in their larger form are reactive when produced in their nanoscale form) and affect their strength or electrical properties. Second, so-called quantum effects can begin to dominate the behavior of matter at the nanoscale - particularly at the lower end – affecting the optical, electrical and magnetic behavior of materials..

[Audio] So, what are nanoparticles? There is no simple answer. The diversity of synthetic (i.e. man-made) nanoparticles is considerable. They are distinct in their properties and applications. In addition to their size, synthetic nanoparticles vary in chemical composition, shape, surface characteristics and mode of production. The term nanoî= refers almost exclusively to particle length. This means that those objects that extend in two dimensions from 1 to several 100 nm are designated as nanoparticles. This, however, also includes filamentous objects such as nanotubes..

[Audio] Future nanotechnology goods will be based on the current and future advances of a wide range of nanomaterials. The creation of a wide range of nanomaterials will lead to a significant shift in how materials and gadgets are made. In other words, every part of our lives will be affected because of this technology..

[Audio] Nano tech improves existing industrial processes, materials and applications by scaling them down to the nanoscale in order to ultimately fully exploit the unique quantum and surface phenomena that matter exhibits at the nanoscale. This trend is driven by companies' ongoing quest to improve existing products by creating smaller components and better performance materials, all at a lower cost. So, what can nanotechnology do?.

[Audio] Nanomedicine. The use of nanotechnology in medicine offers some exciting possibilities. Some techniques are only imagined, while others are at various stages of testing, or actually being used today. Nanotechnology in medicine involves applications of nanoparticles currently under development, as well as longer range research that involves the use of manufactured nano-robots to make repairs at the cellular level (sometimes referred to as nanomedicine). Whatever you call it, the use of nanotechnology in the field of medicine could revolutionize the way we detect and treat damage to the human body and disease in the future, and many techniques only imagined a few years ago are making remarkable progress towards becoming realities..

[Audio] Nanobiotechnology. Combining nanotechnology with biotechnology could for instance lead to molecular prosthetics – nanoscale components that can repair or replace defective cellular components such as ion channels or protein signaling receptors. Another result will be intracellular imaging to highlight early disease markers in routine screening..

[Audio] Bio nanotechnology can support cleaner production methods and provide alternative and renewable energy sources to enhance the sustainability of factories. Nanotechnology helps in energy consumption like in the use of graphene into a coating material resulting in the need for only one layer, which does not require a multifunctional film coating. Nanoscale chemical reagents or catalyst are smaller, yet they increase the rate of chemical reactions, thus lessening the input of raw materials..

[Audio] In agriculture, novel techniques of nanotechnology applications are applied to breed crops with higher levels of micronutrients to detect pests and to control food processing). Ultra-small probes on earth surfaces for agricultural applications and control soil, air, and water contaminations are also developed using nanotechnology..

[Audio] Water purification systems containing nanomaterials and utilizing new membrane technologies containing variable pore-sized filters (i.e., the forward-osmosis membrane technology of Hydration Technologies) are now available. Nanoparticles are also used to prepare heat-resistance and self-cleaning surfaces, such as floors and benchtops..

[Audio] The challenges of nanotechnology includes: Due to its size, a nanoparticle is not easy to analyze. ( 2) Lack of information and methods of characterizing nanomaterials makes it a challenge to detect its concentration in air or in any matrix of the environment. ( 3) Predicting the toxicity of a nanomaterial relies heavily on information about its chemical structure since minor changes in its chemical function group could drastically change its properties. ( 4) Point-to-point risk assessment at all stages of nanotechnology should then be conducted to ensure the safety to human health and environment. ( 5) Risk assessment should include the exposure risk and its probability of exposure, toxicology analysis, transport risk, persistence risk, transformation risk, and ability to recycle. This is which quite expensive due to the difficulty of detecting nanoparticles..

[Audio] The ethical dilemmas of nanotechnology includes: Nanotechnology will give us more "god-like" powers It has to potential to eliminate other ethical issues (e.g. assembling beef instead of slaughtering cows, constructing cells rather than getting them from reproduction, etc...) May lead to undetectable surveillance, Right to Privacy could be jeopardized Do we have a duty to help and provide for others [ countries] with this technology?.

[Audio] Thank you.. Thank you. Thank you. .