Nanospring
Nanofabrication
Presented by: Mehdi Soleymani Goloujeh & Saeede Najafi
Supervisor: Dr. Ab.Akbarzadeh
Medica...
Nanosprings Layout
2
Presentation Layout:
Introduction
Fabrication
Applications
Conclusions
Fullerene
S.Najafi...
Nanosprings IInnttrroodduuccttiioonn
3
S.Najafi - M.Soleymani
Medical Nanotechnology Department
IInnttrroodduuccttiioonn
The first publication on the synthesis of boron carbide nanosprings reported a yield of less
t...
Nanosprings IInnttrroodduuccttiioonn
5
One-dimensional nanostructure
Simple definition: A nanowire wrapped to a helix
...
Coiled tube with its projection (left) showing d) helix diameter and
6
p) coil pitch.
Nanosprings
S.Najafi - M.Soleyma...
7
Nanosprings
S.Najafi - M.Soleymani
Medical Nanotechnology Department
IInnttrroodduuccttiioonn
Crazy surface area – Up to 10,000 times the surface when
compared to its root
8
Nanosprings
Coatings supply versatil...
9
Nanosprings
♦ Low growth temperature (<350°C)
♦ Atmospheric pressure process
♦ 3-300 microns thick
♦ Hydrophilic or...
Nanosprings FFaabbrriiccaattiioonn
10
S.Najafi - M.Soleymani
Medical Nanotechnology Department
Nanosprings Fabrication
A wide variety of well-known and extensively studied nanomaterials with simple shapes, such
as: ...
Nanosprings Fabrication
Until now, the majority of nanospring structures have been synthesized by chemical vapor
deposi...
Nanosprings Fabrication
 Amorphous helical SiO2 nanosprings (80 to 140 nm in diameter and up to 8 microns long)
were sy...
Nanosprings Fabrication
 Contraction and expansion of the helical nanosprings were observed under in situ
electron beam...
Fabrication
S.Najafi - M.Soleymani 15
Medical Nanotechnology Department
Nanosprings
Wet chemistry is a term used to r...
Nanosprings Fabrication
 Structural characterization including EDS line analysis and element mapping revealed Pd
nanodo...
Nanosprings Fabrication
S.Najafi - M.Soleymani 17
Medical Nanotechnology Department
Nanosprings
conventional microfabrication techniques
to create a planar pattern in an InGaAs/GaAs
bilayer that self-as...
Nanosprings Fabrication
The vapor–liquid–solid method (VLS) is a mechanism for the growth of one-dimensional
structures...
 Sputtering is a process whereby atoms are ejected from a solid target material due to
bombardment of the target by ener...
Fabrication
22
S.Najafi - M.Soleymani
Medical Nanotechnology Department
Nanosprings
After synthesis characterization ...
23
Nanosprings
S.Najafi - M.Soleymani
Medical Nanotechnology Department
AApppplliiccaattiioonnss
24
Nanosprings
S.Najafi - M.Soleymani
Medical Nanotechnology Department
Applications
Nanosprings could potentially serve as functional parts of nanomachines,
nanosensors, nanoinductors, and photonic metamat...
Nanosprings Applications
At present, there is great demand for more structurally complex nanomaterials
because the shape...
27
Nanosprings
Example applications:
♣ Detection utilizing molecular or bio-molecular
recognition
♣ Catalytic process...
S.Najafi - M.Soleymani 28
Medical Nanotechnology Department
Nanosprings
Nanosprings as Sensors
Applications
… Applications
29
Nanosprings
S.Najafi - M.Soleymani
Medical Nanotechnology Department
S.Najafi - M.Soleymani 30
Medical Nanotechnology Department
Nanosprings
Nanosprings in TE
Applications
Synthetic osteogenic extracellular matrix formed by
31
Nanosprings
coated silicon dioxide nanosprings
S.Najafi - M.Sol...
Nanosprings CCoonncclluussiioonnss
32
S.Najafi - M.Soleymani
Medical Nanotechnology Department
33
Any Question???
A Word to Wise Sufficient
S.Najafi - M.Soleymani
Medical Nanotechnology Department
34
Thanks For Your Patience
S.Najafi - M.Soleymani
Medical Nanotechnology Department
35
Nanosprings
References:
[1] Kovtyukhova N, Martin B, Mbindyo J, Smith P, Razavi B, Mayer T and Mallouk T 2001 J. Phy...
of 34

Nanosprings

This presentation is a simple explain of Nano-springs which introduce this Nano-materials easily. You can use this PPTx File to present in your class and seminars as well. We prepare this file to present in Tabriz University of Medical Sciences when We were MSc Medical Nanotechnology student. It will be useful for you too.
Published on: Mar 3, 2016
Published in: Science      
Source: www.slideshare.net


Transcripts - Nanosprings

  • 1. Nanospring Nanofabrication Presented by: Mehdi Soleymani Goloujeh & Saeede Najafi Supervisor: Dr. Ab.Akbarzadeh Medical Nanotechnology Department Saeede Najafi – Mehdi Soleymani Tabriz University Of Medical Sciences April 2014 1 A high surface area material with tunable surface chemistry
  • 2. Nanosprings Layout 2 Presentation Layout: Introduction Fabrication Applications Conclusions Fullerene S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 3. Nanosprings IInnttrroodduuccttiioonn 3 S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 4. IInnttrroodduuccttiioonn The first publication on the synthesis of boron carbide nanosprings reported a yield of less than 10%, and similar yields were reported for SiO2 and SiC nanosprings. The existence of helically coiled carbon nanotubes was first predicted by Ihara et al. and Dunlap in the early nineties and a few years later a Belgian research group reported their experimental observation . 4 Nanosprings Theoretical studies in the early 1990s resulted in the establishment of a geometrical model of CNCs. Nanospring structures have been synthesized on certain substrates, such as silicon carbide, boron carbide, silicon dioxide, and zinc oxide, geraphite. S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 5. Nanosprings IInnttrroodduuccttiioonn 5 One-dimensional nanostructure Simple definition: A nanowire wrapped to a helix Helical nanosprings represent a new variety among the family of one-dimensional nanostructure, A nanospring (coiled spring on the nanometer scale) is a typical example of a nanostructure with a complex shape; nanosprings could potentially serve as functional parts of nanomachines, nanosensors, nanoinductors, and photonic metamaterials. S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 6. Coiled tube with its projection (left) showing d) helix diameter and 6 p) coil pitch. Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department IInnttrroodduuccttiioonn
  • 7. 7 Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department IInnttrroodduuccttiioonn
  • 8. Crazy surface area – Up to 10,000 times the surface when compared to its root 8 Nanosprings Coatings supply versatility Cheap and easy to grow S.Najafi - M.Soleymani Medical Nanotechnology Department IInnttrroodduuccttiioonn
  • 9. 9 Nanosprings ♦ Low growth temperature (<350°C) ♦ Atmospheric pressure process ♦ 3-300 microns thick ♦ Hydrophilic or Super-hydrophobic ♦ 100% accessible surface area (300 m²/g) ♦ Easy to functionalize, e.g., silane chemistry ♦ Thermally stable to 1025°C ♦ good chiral conductivity ♦ super-elasticity ♦ interesting morphology ♦ mechanical, electrical, and electromagnetic properties IInnttrroodduuccttiioonn S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 10. Nanosprings FFaabbrriiccaattiioonn 10 S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 11. Nanosprings Fabrication A wide variety of well-known and extensively studied nanomaterials with simple shapes, such as: nanoparticles, nanorods, nanocubes, nanosprings and nanotubes have been synthesized using two general approaches: bottom-up (growth) and top-down (decomposition) with template-assisted and template-free methods. Synthesis methods: CVD (Chemical Vapor Deposition) VLS (Vapor-Liquid-Solid Method) Wet-Chemical Synthesis Microfabrication Techniques Sputtering ALD (Atomic Layer Deposition) 11 S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 12. Nanosprings Fabrication Until now, the majority of nanospring structures have been synthesized by chemical vapor deposition (CVD) on certain substrates, such as silicon carbide (SiC), boron carbide (BC), silicon dioxide (SiO2) and zinc oxide (ZnO), without the assistance of templates. This method usually requires high temperatures, high-purity chemicals, and expensive apparatus. 12 S.Najafi - M.Soleymani CNCs or nanosprings are synthesized mostly using the thermal chemical vapor deposition(CVD) method . Medical Nanotechnology Department
  • 13. Nanosprings Fabrication  Amorphous helical SiO2 nanosprings (80 to 140 nm in diameter and up to 8 microns long) were synthesized with CVD.  characterized and manipulated by(SEM) (TEM) (AFM).  The helical nanosprings were observed in the middle of a straight nanowire and were formed by a perturbation during the growth of the straight nanowire. S.Najafi - M.Soleymani 13 Medical Nanotechnology Department
  • 14. Nanosprings Fabrication  Contraction and expansion of the helical nanosprings were observed under in situ electron beam heating during TEM, as well as bending induced by an AFM tip, suggesting that the helical nanosprings are highly flexible .  may have potential applications in nanomechanical, nanoelectronmagnetic devices, and composite materials. S.Najafi - M.Soleymani 14 Medical Nanotechnology Department
  • 15. Fabrication S.Najafi - M.Soleymani 15 Medical Nanotechnology Department Nanosprings Wet chemistry is a term used to refer to chemistry generally done in the liquid phase. PdCl2 CuCl2 HCL A methodology for synthesis of palladium (Pd) nanospring structures using an anodic aluminum oxide (AAO) membrane template and facile electrochemical deposition. The hydroxyl-terminated surfaces of alumina nanochannels and localized hydrogen evolution contribute to the growth of Pd atoms at peripheral positions of the alumina nanochannels in the presence of an effectual electric potential.
  • 16. Nanosprings Fabrication  Structural characterization including EDS line analysis and element mapping revealed Pd nanodomains curling up on the Cu nanorods.  The lengths of the nanosprings were dictated by the charges transported through electrodeposition, and the diameters of the nanosprings were tunable by altering the diameter of the alumina nanochannels.  Pd nanosprings have potential applications in nanomachines, nanosensors, nanoinductors, and metamaterials. S.Najafi - M.Soleymani 16 Medical Nanotechnology Department
  • 17. Nanosprings Fabrication S.Najafi - M.Soleymani 17 Medical Nanotechnology Department
  • 18. Nanosprings conventional microfabrication techniques to create a planar pattern in an InGaAs/GaAs bilayer that self-assembles into 3D structures during a wet etch release. S.Najafi - M.Soleymani Medical Nanotechnology Department Fabrication 18
  • 19. Nanosprings Fabrication The vapor–liquid–solid method (VLS) is a mechanism for the growth of one-dimensional structures, such as nanowires, from chemical vapor deposition. The growth of a crystal through direct adsorption of a gas phase on to a solid surface is generally very slow. 19 Nanosprings can be synthesized with yield higher than 90% with 100% repeatability. For nanosprings formed from multiple wire this mechanism dose not apply. S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 20.  Sputtering is a process whereby atoms are ejected from a solid target material due to bombardment of the target by energetic particles like atoms or ions. A thin-film is formed by this ejected atoms depositing on a substrate 20 Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department Adhesion to a substrate is high The only film deposition method that an alloy film can form The high melting point raw materials which are difficult with vacuum deposition method can form a film It is easy to control attributions of a film A clean film formation method Fabrication
  • 21. Fabrication 22 S.Najafi - M.Soleymani Medical Nanotechnology Department Nanosprings After synthesis characterization and manipulation using scanning (SEM), transmission (TEM) electron microscopy, and atomic force microscopy (AFM).
  • 22. 23 Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department AApppplliiccaattiioonnss
  • 23. 24 Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department Applications
  • 24. Nanosprings could potentially serve as functional parts of nanomachines, nanosensors, nanoinductors, and photonic metamaterials. Because of their prominent physical and mechanical properties, CNCs have potential applications in microelectromechanical systems (MEMS) and bioMEMS. Moreover, coiled carbon nanotubes can also be used as fillers for nanocomposites due to their special morphologies when they are applied in the biomedical field they act as efficient carriers due to their super-elasticity and large surface area. 25 Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department Applications
  • 25. Nanosprings Applications At present, there is great demand for more structurally complex nanomaterials because the shapes of nanomaterials affect their chemical and physical properties. A nanospring (coiled spring on the nanometer scale) is a typical example of a nanostructure with a complex shape; nanosprings could potentially serve as functional parts of nanomachines, nanosensors, nanoinductors, and photonic metamaterials. The potential applications of patterned nanospring mats are in chemical and biological sensors, hydrogen storage where extremely large surface area materials are needed, and NEMS. 26 S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 26. 27 Nanosprings Example applications: ♣ Detection utilizing molecular or bio-molecular recognition ♣ Catalytic processing of waste streams ♣ Fuel cell membranes ♣ Heat dissipation in microelectronics ♣ Selective separations or sequestration ♣ Drug delivery through timed release S.Najafi - M.Soleymani Medical Nanotechnology Department Applications
  • 27. S.Najafi - M.Soleymani 28 Medical Nanotechnology Department Nanosprings Nanosprings as Sensors Applications
  • 28. … Applications 29 Nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 29. S.Najafi - M.Soleymani 30 Medical Nanotechnology Department Nanosprings Nanosprings in TE Applications
  • 30. Synthetic osteogenic extracellular matrix formed by 31 Nanosprings coated silicon dioxide nanosprings S.Najafi - M.Soleymani Medical Nanotechnology Department Applications
  • 31. Nanosprings CCoonncclluussiioonnss 32 S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 32. 33 Any Question??? A Word to Wise Sufficient S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 33. 34 Thanks For Your Patience S.Najafi - M.Soleymani Medical Nanotechnology Department
  • 34. 35 Nanosprings References: [1] Kovtyukhova N, Martin B, Mbindyo J, Smith P, Razavi B, Mayer T and Mallouk T 2001 J. Phys. Chem. B 105 8762 [2] Dobrokhotov V et al 2006 J. Appl. Phys. submitted [3] Duan X, Wang J and Lieber C M 2000 Appl. Phys. Lett. 76 1116 [4] Zheng M, Zhang L, Li G, Zhang X and Wang X 2001 Appl. Phys. Lett. 79 839 [5] Tang Z, Kotov N and Giersig M 2002 Science 297 237 [6] Salem A, Searson P and Leng K 2003 Nat. Mater. 2 668 [7] Beaux M, Wang L, Zhang D, Gangadean D, McIlroy D, Kwon N, Dziewanowska K and Bohach G 2006 J. Biomed. Nanotechnol. at press [8] Bekyarova E, Ni Y, Malarkey E, Montana V, McWilliams J, Haddon R and Parpura V 2005 J. Biomed. Nanotechnol. 1 3 [9] Chen X, Motojima S. Morphologies of carbon micro-coils grown by chemical vapor deposition. J Mater Sci 1999;34:5519–24. [10] Takikawa H, Yatsuki M, Miyano R, Nagayama M, Sakakibara T, Itoh S, et al. Amorphous carbon fibrilliform nanomaterials prepared by chemical vapor deposition. Jpn J Appl Phys 2000;39:5177–9. [11] Zhang M, Nakayama Y, Pan L. Synthesis of carbon tubule nanocoils in high yield using iron-coated indium tin oxide as catalyst. Jpn J Appl Phys 2000;39:L1242–4. [12] Kuzuya C, In-Hwang W, Hirako S, Hishikawa Y, Motojima S. Preparation, morphology, and growth mechanism of carbon nanocoils. Chem Vapor Depos 2002;8(2):57–62. [13] Feng C, Liew KM. Energetics and structures of carbon nanorings. Carbon 2009;47(7):1664–9. [14] Liu WC, Lin HK, Chen YL, Lee CY, Chiu HT. Growth of carbon nanocoils from K and Ag cooperative bicatalyst assisted thermal decomposition of acetylene. Acs Nano 2010;4(7):4149–57. [15] Shaikjee A, Franklyn PJ, Coville NJ. The use of transmission electron microscopy tomography to correlate copper catalyst particle morphology with carbon fiber morphology. Carbon 2011;49(9):2950–9. [16] Liu Q, Cui Z-M, Ma Z, Bian S-W, Song W-G. Carbon materials with unusual morphologies and their formation mechanism. J Phys Chem C 2007;111(33):12420–4.

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