Introduction to Nanotechnology

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Questions and Answers

Who is credited with proposing nanotechnology in the 1950s?

  • Richard Feynman (correct)
  • Walter G. Rosen
  • John McCarthy
  • Norio Taniguchi

What is the size of a nanometer in meters?

1 x 10^-9 meters

Match the following materials with their properties:

Carbon Nanotubes = Stronger and lighter materials (100 times stronger than steel) Fe oxide/ Co-Fe Oxide = Magnetic storages TiO2 films = Photocatalyst Silica coated surface Enhance Raman Scattering (SERS) = Biomarker Nanoscale Al powder = Propellant Indium Tin Oxide = Used in nanowires and products [Sunscreen, Drug Delivery]

Climate Change can be caused by both man-made and natural factors.

<p>True (A)</p> Signup and view all the answers

What does GMO stand for?

<p>Genetically Modified Organisms</p> Signup and view all the answers

Who is known as the Father of AI?

<p>John McCarthy (D)</p> Signup and view all the answers

STEM Cells are blank cells that are ______ and capable of differentiation.

<p>unspecialized</p> Signup and view all the answers

Disinformation refers to unintentional deception.

<p>False (B)</p> Signup and view all the answers

What is the warming effect of Green House Gases expected to last?

<p>100 years</p> Signup and view all the answers

Who proposed the concept of nanotechnology in the 1950s?

<p>Richard Feynman (D)</p> Signup and view all the answers

What is the size range of nano materials in nanoscience?

<p>1 - 100 nm</p> Signup and view all the answers

What device was used for observing atom behaviors for the first time?

<p>Scanning Tunneling Microscope</p> Signup and view all the answers

Match the following materials with their applications:

<p>Carbon Nanotubes = Stronger and lighter materials (100 times stronger than steel) Fe oxide/ Co-Fe Oxide = Magnetic storages TiO2 films = Photocatalyst Silica coated surface = Enhance Raman Scattering (SERS) Nanoscale Al powder = Propellant Indium Tin Oxide = Used in nanowires and products [Sunscreen, Drug Delivery]</p> Signup and view all the answers

Genetically Modified Organisms (GMOs) include only plants.

<p>False (B)</p> Signup and view all the answers

Who is known as the Father of Artificial Intelligence?

<p>John McCarthy (C)</p> Signup and view all the answers

What is the main cause of Climate Change according to the text?

<p>burning of fossil fuels</p> Signup and view all the answers

Flashcards

Nanoscience Definition

The study of materials with dimensions between 1-100 nanometers (nm).

Nanotechnology Definition

Control and manipulation of materials at the nanoscale to produce new materials with special properties.

Top-Down Nanotechnology

Breaking down larger materials into smaller ones.

Bottom-Up Nanotechnology

Building materials from individual atoms or molecules.

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Carbon Nanotubes

Strong and light materials, stronger than steel.

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Biodiversity Definition

The variety of life on Earth, including species, genes, and ecosystems.

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GMO Definition

Genetically Modified Organism; organisms with genes changed.

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Gene Therapy Goal

Modifying genes to cure or prevent diseases.

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Stem Cell Definition

Cells that can become many different cell types.

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Information Age

The era of widespread information technology; computers are key.

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Artificial Intelligence (AI)

Computer systems that mimic human thinking.

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Climate Change Definition

Long-term shift in atmospheric conditions.

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Greenhouse Effect

Trapping heat in the atmosphere, causing warming.

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Study Notes

Nanotechnology

  • Nanoscience: Study of properties of materials with dimensions between 1-100 nanometers (nm)
  • Nanotechnology: The ability to control and manipulate materials at the nanoscale to create new materials with unique properties
  • Richard Feyman: Proposed the concept of nanotechnology in 1950
  • Norio Taniguchi: Coined the term "nanotechnology" in 1970
  • Scanning Tunnelling Microscope (STM): Used to observe atomic behavior for the first time; 1 nm = 1 x 10^(-9) meters

Ways of Viewing the Microscope

  • Light Microscope
  • Scanning Electron Microscope
  • Transmission Electron Microscope

Approaches in Studying Nanotechnology

  • Top-Down: Breaking down bulk materials into smaller pieces (Taniguchi's approach)
  • Bottom-Up: Building up materials from individual atoms or molecules (Feyman's approach)

Common Materials in Nanotechnology

  • Carbon Nanotubes: Stronger and lighter materials, 100 times stronger than steel
  • Fe oxide/ Co-Fe Oxide: Magnetic storage devices
  • TiO2 films: Photocatalysts
  • Silica coated surface Enhanced Raman Scattering (SERS): Biomarkers
  • Nanoscale Al powder: Propellant
  • Indium Tin Oxide: Used in nanowires and products, such as sunscreen and drug delivery

Biodiversity

  • Definition: Variety of life forms on earth, including species, genetics, and ecosystems
  • Walter G. Rosen: Defined biodiversity in 1986
  • Main Types:
    • Species: Different species within an ecosystem, including abundance and distribution
    • Genetics: Variety of genes within a species, including genetic traits and alleles
    • Ecosystem: Variety of habitats and ecological processes
  • Threats:
    • Climate Change
    • Land use changes
    • Pollution
    • Resource Expedition
    • Exotic Species

Genetically Modified Organisms (GMOs)

  • Selective Breeding: Humans select mating partners for desired outcomes
  • Biotechnology: Use of biological systems to modify products
  • Genetic Engineering: Allows specific genes and DNA to be transferred for desired outcomes
  • Living Modified Organisms (LMOs): Human-experimented modifications
  • GMO in industries:
    • Pest Resistant
    • Virus Resistant
    • Herbicide Tolerance
    • Fortification
    • Cosmetic Preservation
    • Increase Production
  • Impacts of GMOs:
    • Benefits:
      • Higher efficiency
      • Control fertility
      • Increase food processing
      • Nutritional and pharmaceutical enhancements
    • Risks:
      • Inadequate study
      • Promotes mutation, long-term effects are unknown
      • Human reactions
      • Gene mutation
      • Antibiotic resistance
      • Change in nutritional value

Gene Therapy

  • Definition: Seeking an alteration of genes to detect, prevent, or cure gene-related diseases
  • History:
    • 1980s: Bacteria cultivation
    • 1990s: First gene therapy to cure SCID (Severe Combined Immunodeficiency)
  • Types:
    • Somatic Gene Therapy: Insertion of therapeutic DNA into all cells
    • Germline Gene Therapy: Modification of genes inside germ cells
  • Two Approaches:
    • Ex Vivo: Transfer of genes in cultured cells
    • In Vivo: Gene injected into the body
  • Current Status:
    • FDA has not approved any human gene therapy for sale due to safety concerns
  • Problems:
    • Short-lived
    • Immune response
    • Viral vectors
    • Multigene disorders

STEM Cells

  • Definition: Blank cells that can self-renew into different specialized cells
  • History:
    • 1998: First extracted from human embryos
    • 1999: Successful insulin-making cell transplant
    • 2001: Bush restricted research
    • 2002: California begins research
    • 2004: Harvard researches on cells
    • 2005: Woo Suk Hwang claims successful therapeutic cloning
    • 2006: Shinya Yamanaka discovers method to make embryonic-like cells from adult cells
    • 2009: Lift STEM cell research
    • 2010: First successful treatment with STEM cells
    • 2013: Human embryonic cell from fetal cells
  • Challenges:
    • Differentiation control
    • Scalability and standardization
    • Immunological compatibility
    • Tumorgenicity risk
    • Delivery and engraftment
    • Long-term efficacy and safety

Information Age

  • Definition: The age of information, also known as the "computer age" or "digital age"
  • History:
    • Post-WWII (1946)
    • Development of computers and internet
  • Key Figures:
    • Steve Wozniak: Designed a simple computer
    • Steve Jobs: Named the computer Apple and sold it
    • Bill Gates: Stole the computer software
    • US Department of Defense: Made the internet for easy communication in 1971
  • Age of Disruption:
    • 2010: 4th Generation (4G) transfer was invented
    • Social media was widely spread

Artificial Intelligence (AI)

  • Definition: Imitating how humans think, also known as "computer brains"
  • John McCarthy: Father of AI
  • Ethical Issues:
    • Privacy
    • Accuracy
    • Property
    • Accessibility
  • Disinformation and Fake News:
    • Disinformation: intentional swindling
    • Misinformation: unintentional deception
    • Mal-information: wrong information supplied
    • Fake News: false stories to deceive
    • Post-Truth Era: era where truth is not true

Climate Change

  • Definition: Long-term change in atmospheric variables
  • Causes:
    • Internal: Anthropogenic and natural factors
    • External: Phenomena from outer space
  • Green House Gases:
    • CO2
    • Methane
    • CFC
    • Warming effect lasts 100 years, while cooling effect lasts 1 week
  • Effects:
    • Ozone depletion
    • Acid deposition
    • Thermal inversion
    • Global warming
    • Rainfall patterns changing
    • Sea levels rising
    • More extreme weather
  • Philippine Actions:
    • National Risk Reduction and Management Council (NDRRMC)
    • Disaster Risk Reduction and Management Plan (DRRMP)
    • Climate Change Act of 2009 (RA 9729)
    • Established Climate Change Commission (CCC)
    • Environmental Laws:
      • RA 6969: Toxic substance and hazardous and nuclear waste control act of 1990
      • RA 9003: Ecological solid waste management of 2000
      • RA 9275: Clean water act of 2004
      • RA 8749: Philippine clean air act of 1999

Nanotechnology

  • Nanoscience: Study of properties of materials with dimensions between 1-100 nanometers (nm)
  • Nanotechnology: The ability to control and manipulate materials at the nanoscale to create new materials with unique properties
  • Richard Feyman: Proposed the concept of nanotechnology in 1950
  • Norio Taniguchi: Coined the term "nanotechnology" in 1970
  • Scanning Tunnelling Microscope (STM): Used to observe atomic behavior for the first time; 1 nm = 1 x 10^(-9) meters

Ways of Viewing the Microscope

  • Light Microscope
  • Scanning Electron Microscope
  • Transmission Electron Microscope

Approaches in Studying Nanotechnology

  • Top-Down: Breaking down bulk materials into smaller pieces (Taniguchi's approach)
  • Bottom-Up: Building up materials from individual atoms or molecules (Feyman's approach)

Common Materials in Nanotechnology

  • Carbon Nanotubes: Stronger and lighter materials, 100 times stronger than steel
  • Fe oxide/ Co-Fe Oxide: Magnetic storage devices
  • TiO2 films: Photocatalysts
  • Silica coated surface Enhanced Raman Scattering (SERS): Biomarkers
  • Nanoscale Al powder: Propellant
  • Indium Tin Oxide: Used in nanowires and products, such as sunscreen and drug delivery

Biodiversity

  • Definition: Variety of life forms on earth, including species, genetics, and ecosystems
  • Walter G. Rosen: Defined biodiversity in 1986
  • Main Types:
    • Species: Different species within an ecosystem, including abundance and distribution
    • Genetics: Variety of genes within a species, including genetic traits and alleles
    • Ecosystem: Variety of habitats and ecological processes
  • Threats:
    • Climate Change
    • Land use changes
    • Pollution
    • Resource Expedition
    • Exotic Species

Genetically Modified Organisms (GMOs)

  • Selective Breeding: Humans select mating partners for desired outcomes
  • Biotechnology: Use of biological systems to modify products
  • Genetic Engineering: Allows specific genes and DNA to be transferred for desired outcomes
  • Living Modified Organisms (LMOs): Human-experimented modifications
  • GMO in industries:
    • Pest Resistant
    • Virus Resistant
    • Herbicide Tolerance
    • Fortification
    • Cosmetic Preservation
    • Increase Production
  • Impacts of GMOs:
    • Benefits:
      • Higher efficiency
      • Control fertility
      • Increase food processing
      • Nutritional and pharmaceutical enhancements
    • Risks:
      • Inadequate study
      • Promotes mutation, long-term effects are unknown
      • Human reactions
      • Gene mutation
      • Antibiotic resistance
      • Change in nutritional value

Gene Therapy

  • Definition: Seeking an alteration of genes to detect, prevent, or cure gene-related diseases
  • History:
    • 1980s: Bacteria cultivation
    • 1990s: First gene therapy to cure SCID (Severe Combined Immunodeficiency)
  • Types:
    • Somatic Gene Therapy: Insertion of therapeutic DNA into all cells
    • Germline Gene Therapy: Modification of genes inside germ cells
  • Two Approaches:
    • Ex Vivo: Transfer of genes in cultured cells
    • In Vivo: Gene injected into the body
  • Current Status:
    • FDA has not approved any human gene therapy for sale due to safety concerns
  • Problems:
    • Short-lived
    • Immune response
    • Viral vectors
    • Multigene disorders

STEM Cells

  • Definition: Blank cells that can self-renew into different specialized cells
  • History:
    • 1998: First extracted from human embryos
    • 1999: Successful insulin-making cell transplant
    • 2001: Bush restricted research
    • 2002: California begins research
    • 2004: Harvard researches on cells
    • 2005: Woo Suk Hwang claims successful therapeutic cloning
    • 2006: Shinya Yamanaka discovers method to make embryonic-like cells from adult cells
    • 2009: Lift STEM cell research
    • 2010: First successful treatment with STEM cells
    • 2013: Human embryonic cell from fetal cells
  • Challenges:
    • Differentiation control
    • Scalability and standardization
    • Immunological compatibility
    • Tumorgenicity risk
    • Delivery and engraftment
    • Long-term efficacy and safety

Information Age

  • Definition: The age of information, also known as the "computer age" or "digital age"
  • History:
    • Post-WWII (1946)
    • Development of computers and internet
  • Key Figures:
    • Steve Wozniak: Designed a simple computer
    • Steve Jobs: Named the computer Apple and sold it
    • Bill Gates: Stole the computer software
    • US Department of Defense: Made the internet for easy communication in 1971
  • Age of Disruption:
    • 2010: 4th Generation (4G) transfer was invented
    • Social media was widely spread

Artificial Intelligence (AI)

  • Definition: Imitating how humans think, also known as "computer brains"
  • John McCarthy: Father of AI
  • Ethical Issues:
    • Privacy
    • Accuracy
    • Property
    • Accessibility
  • Disinformation and Fake News:
    • Disinformation: intentional swindling
    • Misinformation: unintentional deception
    • Mal-information: wrong information supplied
    • Fake News: false stories to deceive
    • Post-Truth Era: era where truth is not true

Climate Change

  • Definition: Long-term change in atmospheric variables
  • Causes:
    • Internal: Anthropogenic and natural factors
    • External: Phenomena from outer space
  • Green House Gases:
    • CO2
    • Methane
    • CFC
    • Warming effect lasts 100 years, while cooling effect lasts 1 week
  • Effects:
    • Ozone depletion
    • Acid deposition
    • Thermal inversion
    • Global warming
    • Rainfall patterns changing
    • Sea levels rising
    • More extreme weather
  • Philippine Actions:
    • National Risk Reduction and Management Council (NDRRMC)
    • Disaster Risk Reduction and Management Plan (DRRMP)
    • Climate Change Act of 2009 (RA 9729)
    • Established Climate Change Commission (CCC)
    • Environmental Laws:
      • RA 6969: Toxic substance and hazardous and nuclear waste control act of 1990
      • RA 9003: Ecological solid waste management of 2000
      • RA 9275: Clean water act of 2004
      • RA 8749: Philippine clean air act of 1999

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