• Home

  • Documents

  • Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... ·...
25
1 Ir Prof. Michael K.H. Leung Associate Dean and Professor Director, Ability R&D Energy Research Centre School of Energy and Environment City University of Hong Kong Nanotechnology and Clean Energy 1

Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

  • Upload
    vonhi

  • View
    215

  • Download
    1

Embed Size (px)

Citation preview

Page 1: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

1

Ir Prof. Michael K.H. Leung Associate Dean and Professor Director, Ability R&D Energy Research Centre School of Energy and Environment City University of Hong Kong

Nanotechnology and Clean Energy

1

Page 2: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

2

Outline 1. Nanotechnology

2. Nanostructured Photocatalyst

3. Photocatalytic Fuel Cell

4. Other Applications

5. Conclusion

Page 3: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

3

Nanoscale • Nanometer (nm) – 10-9 m

• Human hair – 10,000 nm

• Atoms – 0.1 – 0.5 nm

100 nm100 nm

6 nm

6 nm

100nm

Page 4: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

4

Properties of Porous Material • Large specific surface area

• Increase surface phenomena => higher reactivity

• Increase adsorptivity

• Facilitate light reflection => better utilization of light in photoactivation

• Facilitate electron transport

Page 5: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Photocatalysis TiO2 + hν → e-

cb + h+vb

h+vb + H2O → OH· + H+

h+vb + OH- → OH·

e-cb + O2 → ·O2

- vb - valence band cb - conduction band h+

vb - hole OH· - hydroxyl radical Titanium dioxide

(TiO2)

+ UV light 5

Page 6: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Solar Photocatalytic Water Purification Photocatalyst: P25 TiO2 powder Recovery method: Sedimentation Light source: Solar light

Page 7: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Photocatalytic Air Purification

7

Patent: Light-transmitting tubular-honeycomb photocatalytic reactor, Inventors: M.K.H. Leung, Y.C. Leung, W.C. Yam, P.S.P. Ng, L.L.P. Kwan, Hong Kong short-term patent, publication no.: 1099477, publication date: 10 Aug 2007.

Page 8: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.00

50

100

150

200

250

300

350

H 2 pro

duct

ion

(µm

ol)

Irradiation time (hours)

TiO2-NP-1-1.0Pt TiO2-NS-2-1.0Pt TiO2-NS-3-1.0Pt TiO2-NS-4-1.0Pt

(b)

Solar Photocatalytic Water Splitting Hydrogen Production

Ref.:

Page 9: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Material Fabrication by Anodization

Anodization

DC + -

Ti Pt F- containing EG solution

Ti → Ti4+ + 4e- Ti4+ + 2H2O → TiO2 + 4H+

TiO2+ 4H+ + 6F- → [TiF6]2- + 2H2O

Anode: Cathode: 2e- + 2H+ → H2

Etching Process:

2θ (degree)

XRD

Inte

nsity

(a.u

.)

400 nm

2 μm

~6.4 μm

0.2 μm

9

Page 10: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Fabrication by Hydrothermal Process

10

Temp. & Time Control

Page 11: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Various Nanostructures

100 nm100 nm

6 nm

6 nm

Nanotube Array Nanorod Array

Nanosheet Nano-flower Hollow Sphere

11

Page 12: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Modification of Nanomaterials

Ag-Ag2S/TiO2 nanotube

CdS/TiO2 nanorod

Ref.: W. Fan, S. Jewell, Y. She and M. K. H. Leung, Physical Chemistry Chemical Physics, 2014, 16, 676-680.

Bi2O3/TiO2 nanobelt

12

Page 13: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Proton

13

Fuel Cell Fuel cell converts hydrogen into electricity by electrochemical reactions. Water and heat are byproducts.

Page 14: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

14

Originally Designed by NASA for Space Applications

Ref.: www.nasa.gov

Features: • Use available hydrogen fuel • Produce drinkable water • Effective hydrogen recycling

http://www.nasa.gov/home/index.html
Page 15: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

15

For Commercial Applications

• Reduce greenhouse gas emissions

• Reduce depletion of finite fossil fuels

• Hydrogen is clean and, in practice, it can be produced from water, which is abundant.

• Promote diverse, domestic, and sustainable energy resources

• Increase reliability and efficiency of electricity generation

• Hydrogen technologies can be viable with a transition from conventional technologies

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=-7gNsPHKNpcwVM&tbnid=GFb2MLGwhbXbYM:&ved=0CAUQjRw&url=http://hongkongbusiness.hk/commercial-property/news/prime-street-shop-rents-in-hong-kong-dropped-19&ei=8TbbU7eALpPr8AXiyoLQBw&bvm=bv.72197243,d.dGc&psig=AFQjCNGWvsnKWGN1OB1_iYsEuoOCRUYfHg&ust=1406961757386601
http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=dBSnR4j0XUMH5M&tbnid=CKVH_WICHY0x1M:&ved=0CAUQjRw&url=http://www.flickriver.com/groups/1541988@N24/pool/interesting/&ei=iTfbU_y7Dpe58gW92ICgCA&bvm=bv.72197243,d.dGc&psig=AFQjCNHMvDp4fX-inChqOLMkGdb3s20_Vw&ust=1406961896008027
Page 16: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Capital Cost of Fuel Cell

Ref.: U.S. DOE, 2012

(US$/kW)

16

Page 17: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Fuel Cell Cars

17

Mercedes-Benz plug-in hydrogen fuel-cell BMW hydrogen

fuel-cell vehicle

Honda Clarity fuel cell

Hyundai Tucson Fuel Cell

GM Opel HydroGen4

Toyota Mirai

http://www.google.com.hk/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=4sx3t4btji-cuM&tbnid=nb2xgO4MSGCLUM:&ved=0CAUQjRw&url=http://www.autoguide.com/auto-news/2014/01/toyota-hydrogen-fuel-cell-car-sale-next-year.html&ei=SD7bU6XEK8Xj8AXP94CgCA&psig=AFQjCNHu1n0YzwsPrVElSyDH6jwZ8MrIpA&ust=1406963653109353
Page 18: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

18 2.4-MW biogas fuel cell plant in San Diego Natural gas fuel cell plant in New Jersey

200-kW natural gas fuel cell plant in Sydney 400-kW hydrogen fuel cell plant in Connecticut

Stationary Electricity Supply

Page 19: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Photocatalytic Fuel Cell

19 Ref.: Bin Wang, Hao Zhang, Xiao-Ying Lu, Jin Xuan, Michael K.H. Leung, Solar photocatalytic fuel cell using CdS–TiO2 photoanode and air-breathing cathode for wastewater treatment and simultaneous electricity production, Chemical Engineering Journal, Volume 253, 2014, Pages 174-182.

• Effective wastewater treatment and simultaneous production of electricity • Low-cost fabrication • Environmental-friendly operation

http://www.google.com.hk/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=4PA8x1Nt3phQwM&tbnid=cYHQL7JFTkJcqM:&ved=0CAUQjRw&url=http://fuelcellsworks.com/news/2013/04/17/innovative-cityu-fuel-cell-purifies-and-uses-wastewater-to-generate-power/&ei=sWXbU5r8EI3q8AX5m4GQBg&psig=AFQjCNEta24dL1WzZ570j9LgL5WCqTyskw&ust=1406973698436399
Page 20: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

20

Dye-Sensitized Solar Cell The dye-sensitized solar cell (DSSC) technology, taken as a new generation of photovoltaics, is a flexible, efficient and economical way to directly convert solar energy into electricity.

Page 21: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Thermoelectric Generator

21

Recovery of waste heat from: • Boilers • Engines • Geothermal sources

Page 22: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Conclusion

Nanotechnology offers enormous opportunities to develop new materials that directly and/or indirectly enhance energy efficiency and promote the use of renewable energy.

22

Page 23: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Acknowledgements

Funding Sources • GRF • ITF • ECF • SDF • CityU • Ability R&D Energy Research Centre

23

Page 24: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Acknowledgements

24

Page 25: Nanotechnology and Clean Energyenergyinst.org.hk/Activity/Presentation/2016 Energy Challenges... · Human hair – 10,000 nm ... Chemistry Chemical Physics, 2014, 16, 676680.- Bi

Thank You Ir Prof. Michael K.H. Leung School of Energy and Environment City University of Hong Kong Email: [email protected] tel: (852)3442 4626 Fax: (852)3442 0688

25

mailto:[email protected]

Oregon Institute of Technology L ß ns 97 Hi UPPER · ns nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm!r!O B-27 B-26 B-25 B-24 B-23 B-18 B-17 B-16 B-15 B-14

Oregon Institute of Technology L ß ns 97 Hi UPPER · ns nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm!r!O B-27 B-26 B-25 B-24 B-23 B-18 B-17 B-16 B-15 B-14

Documents
USD 259 District Map...nn n n n n n n n n n n n n n n n n n n nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmn nm nmnm nm nm nmnnm

USD 259 District Map...nn n n n n n n n n n n n n n n n n n n nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmn nm nmnm nm nm nmnnm

Documents
3403000 3403500 3404000 3404500 3405000 3405500 0 5 · 2017. 10. 17. · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmnm nm nm nmnm nmnm nm nm nm nm nm nm nmnm

3403000 3403500 3404000 3404500 3405000 3405500 0 5 · 2017. 10. 17. · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmnm nm nm nmnm nmnm nm nm nm nm nm nm nmnm

Documents
Polymers and biopolymers in€¦ · < 100 nm Layers Rods Particles. History of nanotechnology Ultrathin gold layers ( 100 nm) History of nanotechnology Technological applications

Polymers and biopolymers in€¦ · < 100 nm Layers Rods Particles. History of nanotechnology Ultrathin gold layers ( 100 nm) History of nanotechnology Technological applications

Documents
Introduction to Nanotechnology · 2011-05-14 · Nanotechnology deals with creation of materials, devices and systems in the nanometer scale (1-100 nm) through manipulating matter

Introduction to Nanotechnology · 2011-05-14 · Nanotechnology deals with creation of materials, devices and systems in the nanometer scale (1-100 nm) through manipulating matter

Documents
Current Applications and Products of Nanotechnology Applications and ... in biodegradable-polymer capsules 100 to 500 nm ... plant that incorporates ultra-filtration membranes

Current Applications and Products of Nanotechnology Applications and ... in biodegradable-polymer capsules 100 to 500 nm ... plant that incorporates ultra-filtration membranes

Documents
Introduction to Nanotechnology. Nanoscale The scale of materials considered nanotechnology are between one and one hundred nanometers or nm. 1 nanometer

Introduction to Nanotechnology. Nanoscale The scale of materials considered nanotechnology are between one and one hundred nanometers or nm. 1 nanometer

Documents
NANOTECHNOLOGY: Potential Impacts on Food Safety · NANOTECHNOLOGY: Potential Impacts on Food Safety Jim Dingman, MS, REHS, ... 1 rbc = 2,500 nm. ... nanotechnology as well as the

NANOTECHNOLOGY: Potential Impacts on Food Safety · NANOTECHNOLOGY: Potential Impacts on Food Safety Jim Dingman, MS, REHS, ... 1 rbc = 2,500 nm. ... nanotechnology as well as the

Documents
SYMPOSIUM ON NANOTECHNOLOGY TITLED “Nanotechnology: …

SYMPOSIUM ON NANOTECHNOLOGY TITLED “Nanotechnology: …

Documents
DOUGLAS COUNTY SCHOOL BOARD DISTRICTS - dcssga.org · nm nm nm nm nm nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmnm nm

DOUGLAS COUNTY SCHOOL BOARD DISTRICTS - dcssga.org · nm nm nm nm nm nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmnm nm

Documents
The Potential of Nanotechnology - Loughborough University · The Potential of Nanotechnology ... existence of which depend on an advanced understanding of the behaviour of ... 1-nm-sized

The Potential of Nanotechnology - Loughborough University · The Potential of Nanotechnology ... existence of which depend on an advanced understanding of the behaviour of ... 1-nm-sized

Documents
Cerium Dioxide, NM-211, NM-212, NM-213. Characterisation and … · 2014. 11. 28. · Nanotechnology holds considerable promise in many technological areas and industrial sectors

Cerium Dioxide, NM-211, NM-212, NM-213. Characterisation and … · 2014. 11. 28. · Nanotechnology holds considerable promise in many technological areas and industrial sectors

Documents
Neuro-Fuzzy-Chao-Criti-Plexity Scale-free Bio-systems · [SinI] (nM) Bistability Graded Switch Osc Pulse A R (protein/mRNA-s) k 3 (mRNA/s) 0A = 10,000 nM 0A = 10 nM Evolvability?

Neuro-Fuzzy-Chao-Criti-Plexity Scale-free Bio-systems · [SinI] (nM) Bistability Graded Switch Osc Pulse A R (protein/mRNA-s) k 3 (mRNA/s) 0A = 10,000 nM 0A = 10 nM Evolvability?

Documents
Nanotechnology Nano size: Generally 1-100 nm The European Science Foundation definition Nanoscale was seen to range from 1 to 1000 nm

Nanotechnology Nano size: Generally 1-100 nm The European Science Foundation definition Nanoscale was seen to range from 1 to 1000 nm

Documents
Nanoscience, Nanotechnology, and Nanovationbeaucag/Classes/SolarPowerForAfrica/Inaugural.pdf · Nanoscience, Nanotechnology, ... NanoTechnology Generation 1 established Nanotechnology

Nanoscience, Nanotechnology, and Nanovationbeaucag/Classes/SolarPowerForAfrica/Inaugural.pdf · Nanoscience, Nanotechnology, ... NanoTechnology Generation 1 established Nanotechnology

Documents
Capítulo 13 - Quia...225 nm Bacteriophage T4 Adenovirus Human red blood cell Rabies virus 10,000 nm in diameter 170 x 70 nm 90 nm Bacteriophage M13 800 x 10 nm Chlamydia elementary

Capítulo 13 - Quia...225 nm Bacteriophage T4 Adenovirus Human red blood cell Rabies virus 10,000 nm in diameter 170 x 70 nm 90 nm Bacteriophage M13 800 x 10 nm Chlamydia elementary

Documents
geospasial.bnpb.go.idgeospasial.bnpb.go.id/.../PETA-SEBARAN-PENDIDIKAN-DI-SEKITAR-GUNUNG... · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm

geospasial.bnpb.go.idgeospasial.bnpb.go.id/.../PETA-SEBARAN-PENDIDIKAN-DI-SEKITAR-GUNUNG... · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm

Documents
MAPA DE VALORES DE TERRENOS Y … san jose goicoechea... · nm æ æ nm nm æ nm nm nm æ nm æ nm nm nm æ nm nm nm nm æ nm æ nm nm nm æ nm nm æ æ æ æ æ nm nm æ æ æ nm

MAPA DE VALORES DE TERRENOS Y … san jose goicoechea... · nm æ æ nm nm æ nm nm nm æ nm æ nm nm nm æ nm nm nm nm æ nm æ nm nm nm æ nm nm æ æ æ æ æ nm nm æ æ æ nm

Documents
Ward / Quartier 1...$K $K $K $ $K!C nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm …

Ward / Quartier 1...$K $K $K $ $K!C nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm …

Documents
SYRIA REFUGEE RESPONSE - reliefweb.intreliefweb.int/sites/reliefweb.int/files/resources/WASH_Presence... · nm nm nmn nm n nm nm nm nmnm n nm nm nm nm nm nm nmn nm nm nmnmn nnm nm

SYRIA REFUGEE RESPONSE - reliefweb.intreliefweb.int/sites/reliefweb.int/files/resources/WASH_Presence... · nm nm nmn nm n nm nm nm nmnm n nm nm nm nm nm nm nmn nm nm nmnmn nnm nm

Documents
BELLOWS COUPLINGS - promsnab.info - metal bellows couplings.pdf · SERIES BK | 15 – 10,000 Nm ... BELLOWS COUPLINGS THE ULTIMATE COUPLING FROM 15 – 10,000 Nm ... machined to ISO

BELLOWS COUPLINGS - promsnab.info - metal bellows couplings.pdf · SERIES BK | 15 – 10,000 Nm ... BELLOWS COUPLINGS THE ULTIMATE COUPLING FROM 15 – 10,000 Nm ... machined to ISO

Documents
Polymers and biopolymers in · Technological applications of nanoobjects ... Polymers in micro- and nanotechnology ... Extreme UV resists for 157 nm irradiation Chemistry. Micro-

Polymers and biopolymers in · Technological applications of nanoobjects ... Polymers in micro- and nanotechnology ... Extreme UV resists for 157 nm irradiation Chemistry. Micro-

Documents
BELLOWS COUPLINGS - Inicio R+W ACOPLE MODELO BK.pdf · series bk | 15 – 10,000 nm flexible and torsionally rigid. bellows couplings the ultimate coupling from 15 – 10,000 nm

BELLOWS COUPLINGS - Inicio R+W ACOPLE MODELO BK.pdf · series bk | 15 – 10,000 nm flexible and torsionally rigid. bellows couplings the ultimate coupling from 15 – 10,000 nm

Documents
Nanotechnology on our Desktops Hard Disk Sensor Medium Transistor Gate SourceDrain Switching layer 5 nm Magnetic grain 10 nm Gate oxide 4 nm Well 6 nm

Nanotechnology on our Desktops Hard Disk Sensor Medium Transistor Gate SourceDrain Switching layer 5 nm Magnetic grain 10 nm Gate oxide 4 nm Well 6 nm

Documents
Nanotechnology in Fertilizers and SupplementsNanotechnology in Fertilizers: Safety? From a safety standpoint, fertilizers and supplements containing NM or featuring nanotech merit

Nanotechnology in Fertilizers and SupplementsNanotechnology in Fertilizers: Safety? From a safety standpoint, fertilizers and supplements containing NM or featuring nanotech merit

Documents
1 What is Nanotechnology Nanotechnology is the exploitation of the ability to control matter at dimensions between 0.1 and 100 nm, resulting in unique

1 What is Nanotechnology Nanotechnology is the exploitation of the ability to control matter at dimensions between 0.1 and 100 nm, resulting in unique

Documents
MAPA DE VALORES DE TERRENOS POR ZONAS … del Canton Alajuela 0… · nm nm æ nm nm æ nm nm nm nm æ æ nm nm nm nm nm æ nm nm nm nm æ nm nm nm nm æ æ æ æ nm nm æ nm nm nm

MAPA DE VALORES DE TERRENOS POR ZONAS … del Canton Alajuela 0… · nm nm æ nm nm æ nm nm nm nm æ æ nm nm nm nm nm æ nm nm nm nm æ nm nm nm nm æ æ æ æ nm nm æ nm nm nm

Documents
Innovation and Development of Study Field Nanomaterials at the … · 2014-02-17 · . Funkcionalizace nanomateriálů ... transistor size 90 nm ... • US National Nanotechnology

Innovation and Development of Study Field Nanomaterials at the … · 2014-02-17 · . Funkcionalizace nanomateriálů ... transistor size 90 nm ... • US National Nanotechnology

Documents
Bacteria Predominate 10,000+ “Species”, –Mycoplasma genetalium 200 nm – Thiomargarista namibiensis 750 m –soil, water, air, symbionts, –have adapted

Bacteria Predominate 10,000+ “Species”, –Mycoplasma genetalium 200 nm – Thiomargarista namibiensis 750 m –soil, water, air, symbionts, –have adapted

Documents
A diffraction grating with 10,000 lines/cm will exhibit the first order maximum for light of wavelength 510 nm at what angle? (1 nm = 10 -9 m) 1234567891011121314151617181920

A diffraction grating with 10,000 lines/cm will exhibit the first order maximum for light of wavelength 510 nm at what angle? (1 nm = 10 -9 m) 1234567891011121314151617181920

Documents