Self-assembly and Nanotechnology 10.524
Lecture 3 Self-assembled StructuresLecture 3. Self assembled Structures (Nano-, Micro- and Macro-scales)
Instructor: Prof. Zhiyong Gu (Chemical Engineering& UML CHN/NCOE Nanomanufacturing Center)
Self-assembly and Nanotechnology
Lecture 3: Self-assembled Structures
Table of Contents
Molecular based
Block copolymers: amphiphilic molecules
Inorganic (natural)
Nanoparticles, nanowires, carbon nanotubes
Micro and macro-structures
Surface tension driven (enabled) self-assembly: theory and ( ) y ycase studies
Biomolecular self-assembly (Lecture 5)
Self-assembly and Nanotechnology
Lecture 3: Self-assembled Structures
Self-assembly at different scales
Micro-
Nano- Macro-
Atoms, molecules, ●●● Human, earth, ●●●Atoms, molecules, ●●● , ,
Self-assembly and Nanotechnology
Lecture 3: Self-Assembled Structures
Self-assembly and Nanotechnology
From Gracias, Micro- and Nanotechnology
Lecture 3: Self-Assembled Structures
Examples of complex molecules and supramolecular assembly
Self-assembly and NanotechnologyBosman et al., JACS, 2003, 715-728
Schematic representation of the modular approach to star polymers
Lecture 3: Self-Assembled Structures
In solutions
Ordered nanostructuresof block copolymers
Alexandridis, Olsson, Lindman, Langmuir 1998, 14, 2627-2638
Self-assembly and NanotechnologyOn surfaces
Lecture 3: Self-Assembled Structures
Self-assembly and Nanotechnology
Lecture 3: Self-Assembled Structures
Self-assembly at different scales
Morris, Ho, and Parviz, 2005
Self-assembly and Nanotechnology
Lecture 3: Self-Assembled Structures
Self-assembly of nanoparticles
Barry, Hoon, and Jacobs, 2004
Self-assembly and Nanotechnology
Barry, Hoon, and Jacobs, 2004
Lecture 3: Self-Assembled Structures
Self-assembly of nanoparticles
Drying-mediated self-assemblyDrying-mediated self-assembly of nanoparticles
Rabani et al., Nature, 2003
Self-assembly and Nanotechnology
Lecture 3: Self-Assembled Structures
Self-assembly of nanoparticles
TEM image of polymer 1-Thy-Au aggregates formed at different temperatures. a, 23.8C. Inset, representative self assembled microparticle. b, -20 8C. c, 10 8C.
Wang et al., Soft Matter, 2005
Self-assembly and Nanotechnology
Boal et al., Nature, 2000
Lecture 3: Self-Assembled Structures
Self-assembly of nanowiresSelf-assembly of nanowires
Magnetic assembly
Self-assembly and NanotechnologyPark, Lim, Chung, Mirkin. Science 2004, 303, 348
Magnetic assembly
Love, Urbach, Prentiss, Whitesides. JACS, 2003, 125, 12696.
Lecture 3: Self-Assembled Structures
Self-assembly of nanowiresSelf-assembly of nanowires
“Glued” 3D bundles
“Glued” 2D networksGlued 2D networks
Self-assembly and Nanotechnology Gu, Chen, Gracias. Langmuir 2004, 20,11308.
Lecture 3: Self-Assembled Structures
Self-assembly of nanowires nanoribbonsSelf-assembly of nanowires, nanoribbons
ZnO
Self-assembly and Nanotechnology Wen et al., Chem. Phys. Lett., 2003
Lecture 3: Self-Assembled Structures
Self-assembly of carbon nanotubes
Directed assembly of organized, multiwalled carbon-nanotube structures grown by chemical-vapour deposition.
Self-assembly and Nanotechnology
g y p p
Wei et al., Nature, 2002
Lecture 3: Self-Assembled Structures
Self-assembly of carbon nanotubes for brushes
Self-assembly and Nanotechnology
Cao et al., Nature Mater., 2005
Lecture 3: Self-Assembled Structures
Hi hi l lf bl f t l t tHierarchical self-assembly of metal nanostructureson diblock copolymer scaffolds
Self-assembly and NanotechnologyLopes & Jaeger. Nature, 2001
Lecture 3: Self-Assembled Structures
El t t ti ll Di t d S lf bl f N ti l dElectrostatically Directed Self-assembly of Nanoparticles andnanowires to form Nanoparticle and Nanowire Based Devices
Self-assembly and NanotechnologyBarry, Hoon, and Jacobs, 2004
Lecture 3: Self-Assembled Structures
St bl fi ti f b tStable configuration of a bar magnet
Assembled magnets
Self-assembly and Nanotechnology
http://www.nanonet.go.jp/english/kids/k-make/organization.html
Lecture 3: Self-Assembled Structures
Mi l lf blMicro-scale self-assembly
Self-assembly of 5 micrometer glassspheres on a mica surface. The spheresare initially suspended in a drop ofwater on the mica. As the dropwater on the mica. As the dropevaporates, the spheres are packedtogether by the surface tension at thedrop's edge. Slight irregularities in thepacking can be seen, and are the resultpacking can be seen, and are the resultof irregularly shaped spheres.
Size : 5 microns
http://www.chem.wisc.edu/~ellis/People/Shaw/spheres.html
Size : 5 microns
p p p
Self-assembly and Nanotechnology
Lecture 3: Self-Assembled Structures
Millimeter scale self-assembly
Triangles, made of polydimethylsiloxane with magnetized strontium ferrite along the edges, self assemble on the surface of water. The different color triangles are
i l i d h d h h i Thoppositely magnetized so they are expected to have the strongest attractions. The dish and camera are moved circularly to produce a wave that moves the pieces. The movie plays in real time.
http://mrsec.wisc.edu/Edetc/cineplex/self/index.html
Self-assembly and Nanotechnology
Lecture 3: Self-Assembled Structures
Self-assembly and NanotechnologyBarry, Hoon, and Jacobs, 2004
Lecture 3: Self-Assembled Structures
Programmable Surface Tension Driven Self-assembly of MicrometerProgrammable Surface Tension Driven Self-assembly of Micrometer sized Components to Form Multi-component Hybrid Microsystems
Self-assembly and NanotechnologyBarry, Hoon, and Jacobs
Lecture 3: Self-Assembled Structures
Live example I: Reversible and Irreversible Metal Nanowire Networks and Vertically-Aligned Arrays
Papadakis, Gu, Gracias. Applied Physics Letters 2006, 88, 233118
Self-assembly and Nanotechnology
http://netserver.aip.org/cgi-bin/epaps?ID=E-APPLAB-88-202623
Lecture 3: Self-Assembled Structures
Live example II: Programmable Self-assembly
S l G iffith MIT
Self-assembly and Nanotechnology
Saul Griffith, MIThttp://www.media.mit.edu/physics/demos/crystal.mpg
Lecture 3: Self-Assembled Structures
Self-assembly and Nanotechnology
Lecture 3: Self-assembled Structures
Final thought: Create or develop self-assembledstructures at different scales
Micro-
Nano- Macro-
Atoms, molecules, ●●● Human, earth, ●●●Atoms, molecules, ●●● , ,
Self-assembly and Nanotechnology
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