Three-Dimensional Nanoarchitectures

3D nanostructures by two consecutive nanoimprints
3.4 Summary and future outlook References 

4. Electrochemical Growth of Nanostructured Materials by Jin-Hee Lim and John B. Wiley
4.1 Magnetic Nanomaterials
4.2 Semiconductor Nanostructures
4.3 Thermoelectric Nanomaterials
4.4 Conducting Polymer Nanostructures
4.5 Nanotube and Core-Shell Nanostructures
4.6 Porous Au Nanowires
4.7 Modification of Nanowires
4.8 Functionalization of Nanowires
4.9 Nanostructure Arrays on Substrates
4.10 Patterning of Nanowires Acknowledgment

5. Three dimensional micro/nanomaterials generated by fiber drawing nanomanufacturing by Zeyu Ma, Yan Hong, Shujiang Ding, Minghui Zhang, Maniul Hossain, Ming Su
5.1 Introduction
5.2 Fiber draw tower
5.3 Materials selections
5.4 Drawing process
5.5 Size design
5.6 3D assembling
5.7 Metallic nanowires
5.8 Semiconductor nanowires
5.9 Glass microchannel array
5.10 Differential etching of glasses
5.11 Glass microspike array
5.12 Hybrid glass membranes
5.13 Textured structure of encapsulated paraffin wax microfiber
5.14 Conclusions References

6.0 One-Dimensional Metal Oxide Nanostructures for Photoelectrochemical Hydrogen Generation by Yat Li
6.1 Introduction
6.1.1 Photoelectrochemical hydrogen generation6.1.2 Challenges in Metal Oxide based PEC hydrogen generation
6.1.3 One-Dimensional Nanomaterials for Photoelectrodes
6.2 Pristine Metal Oxide Nanowire/Nanotube-Arrayed Photoelectrodes
6.2.1 Nanowire arrayed photoelectrodes
6.2.1.1 Hematite (?-Fe2O3)
6.2.1.2. Titanium Oxide (TiO2) and Zinc Oxide (ZnO)6.2.1.3. Tungsten Trioxide (WO3)
6.2.2 Nanotube arrayed photoelectrodes
6.3 Element-Doped Metal Oxide 1D Nanostructures
6.3.1 TiO2 nanostructures
6.3.2. ZnO nanostructures
6.3.3 Hematite (?-Fe2O3) nanostructures
6.4 Quantum Dot Sensitizations
6.4.1 Background
6.4.2 Quantum Dot Sensitized ZnO Nanowires
6.4.3 Quantum Dot Co-Sensitized Nanowires
6.4.4 Double-sided Quantum Dot Sensitization
6.5 Synergistic Effect of Quantum Dot Sensitization and Elemental Doping
6.6 Concluding Remarks References 

7. Helical Nanostructures: Synthesis and Potential Applications by Pu-Xian Gao and Gang Liu
7.1 Introduction
7.2 Semiconductor nanohelices
7.2.1 ZnO nanohelices
7.2.1.1 Superlattice-structured ZnO nanohelices
7.2.1.2 Superelasticity, nanobuckling and non-linear electronic transport properties of superlattice-structured ZnO nanohelices
7.2.1.2.1 Superelasticity of superlattice-structured ZnO nanohelix
7.2.1.2.2 Nanobuckling and fracture of superlattice-structured ZnO nanohelix
7.2.1.2.3 Non-linear electronic transport of superlattice-structured ZnO nanohelix
7.2.1.3 Other ZnO nanohelices
7.2.4 InP nanohelices
7.2.2 SiO2 nanohelices
7.2.3 CdS nanohelices
7.2.4 InP nanohelices
7.2.5 Ga2O3 nanohelices
7.3 Carbon-related nanohelices
7.3.1 Helical carbon nanoribbon/nanocoil
7.3.2 Helical carbon nanotube
7.3.3 Tungsten-containing carbon (WC) nanospring
7.4 Other nanohelices
7.4.1 Helical SiC/SiO2 core-shell nanowires and Si3N4 microcoils
7.4.2 MgB2 nanohelices
7.4.3 Si spirals
7.5 Potential applications7.6 Summary Acknowledgement References 

8. Hierarchical 3D Nanostructure Organization for Next Generation Devices by Eric N. Dattoli and Wei Lu8.1 Introduction
8.2 Fluidic Flow - Assisted Assembly
8.2.1 Drop-Drying
8.2.2 Channel-Confined Fluidic Flow
8.2.3 Blown Bubble Film Transfer
8.3 Nematic Liquid Crystal - Induced Assembly
8.4 Langmuir-Blodgett Assembly
8.5 Dielectrophoresis - Assembly
8.6 Chemical Affinity and Electrostatic Interaction - directed Assembly
8.7 Contact Transfer
8.7.1 Shear-assisted Contact Printing
8.7.2 Stamp Transfer
8.8 Directed Growth
8.8.1 Horizontal Growth
8.8.2 Vertical Growth
8.9 Device Applications
8.9.1 Thin-Film Transistor
8.9.1.1 Performance considerations for NW- or NT- based TFTs
8.9.1.2 Transparent Nanowire-based TFTs
8.9.1.3 CNT-based TFTs
8.9.2 3D, Multilayer Device Structures
8.9.3 Sensors8.9.4 Vertical Nanowire Field Effect Transistors (FETs)
8.10 Conclusion References 

9. Strain-induced Self Rolled-up Semiconductor Microtube Resonators: A New Architecture for Photonic Device Applications by Xin Miao, Ik Su Chun, and Xiuling Li
9.1 Introductions
9.2 Formation Process
9.3 Photonic Applications of Rolled-up Semiconductor Tubes
9.3.1 Spontaneous emission from quantum well microtubes: intensity enhancement and energy shift
9.3.2 Optical resonance modes in rolled-up microtube ring cavity
9.3.3 Optically pumped lasing from rolled-up microtube ring cavity 

10. Carbon Nanotube Arrays: Synthesis, Properties and Applications by Suman Neupane, Wenzhi Li
10.1 Introduction
10.2 Carbon Nanotube Synthesis
10.2.1 Arc discharge
10.2.2 Laser ablation
10.2.3 Electrochemical synthesis
10.2.4 Diffusion flame synthesis
10.2.5 Chemical vapor deposition
10.3 Carbon Nanotube Arrays
10.3.1 CNTA synthesis using patterned catalyst arrays
10.3.1.1 Pulsed laser deposition
10.3.1.2 Anodic aluminum oxide (AAO) templates10.3.1.3 Reverse micelle method
10.3.1.4 Photolithography
10.3.1.5 Electrochemical etching
10.3.1.6 Sputtering
10.3.1.7 Nanosphere lithography
10.3.1.8 Sol-gel method
10.3.2 CNTA synthesis by other methods
10.3.3 Horizontal arrays of CNTs
10.4 Mechanical Properties
10.5 Thermal Properties
10.6 Electrical properties10.7 Applications of CNTs and CNTAs
10.7.1 Hydrogen storage
10.7.2 CNTs as Sensors
10.7.3 CNTs for battery and supercapacitor applications
10.7.4 CNTs for photovoltaic device
10.8 Conclusions References 

11. Molecular Rotors Observed by Scanning Tunneling Microscopy by Ye-liang Wang, Qi Liu, Hai-gang Zhang, Hai-ming Guo, Hong-jun Gao Abstract
11.1  Introduction
11.2 Solution-based and surface-mounted molecule machines
11.3  Single molecular rotors at surfaces
11.3.1 A monomolecular rotor in supramolecular network
11.3.2 Gear-like rotation of molecular rotor along the edge of molecular island
11.3.3  Thermal-driven rotation  on reconstructed-surface template
11.3.4  STM-driven rotation  on reconstructed-surface template
11.3.5  Molecular rotors with variable rotation radii
11.3.6 Rolling motion of a single molecule at surface
11.4 Array of molecular motors at surfaces
11.5 Outlook
11.6 Conclusion Acknowledgements References 

12. Nanophotonic Devices Based on ZnO Nanowires by Qing Yang and Zhong Lin Wang
12.1 Introduction
12.2 Pure optical devices based on ZnO NWs
12.2.1 ZnO NW subwavelength waveguides and their applications
12.2.2 Optical pumped lasers in ZnO NWs
12.2.3 Nonlinear optical devices based on ZnO NWs
12.3 Optoelectronic devices based ZnO NWs
12.3.1 ZnO NW ultra-sensitive UV and Infrared PDs
12.3.2 Dye-sensitized solar cells based on ZnO NWs
12.3.3 Single ZnO NW and NW array light emitting diodes12.3.4 Electrically pumped random lasing from ZnO nanorod arrays
12.4 Piezo-phototronic devices based on ZnO NWs
12.4.1 Optimizing the power output of a ZnO photocell by piezopotential
12.4.2 Enhancing Sensitivity of a Single ZnO Micro-/NW Photodetector by Piezo-phototronic effect
12.5 Conclusions References 

13. Nanostructured Light Management for Advanced Photovoltaics by Jia Zhu, Zongfu Yu, Sangmoo Jeong, Ching-Mei Hsu, Shanui Fan, Yi Cui Abstract
13.1 Introduction
13.2 Fabrication of Nanowire and Nanocone Arrays
13.2.1 Method
13.2.2 Shape Control: Nanowires and Nanocones
13.2.3 Diameter and Spacing Control
13.2.4 Large Scale Process
13.3 Photon Management: Anti-reflection
13.3.1 Nanowires
13.3.2 Nanocones
13.4 Photon Management: Absorption Enhancement
13.4.1 Different Mechanisms
13.4.2 Nanodome Structures
13.5 Solar Cell performance
13.6 Fundamental Limit of Light-trapping in Nanophotonics
13.7 Summary and Outlook References 

14. Highly Sensitive and Selective Gas Detection by 3D Metal Oxide Nanoarchitectures by Jiajun Chen, Kai Wang, Baobao Cao, Dr. Weilie Zhou
14.1 Introduction
14.2 Highly Sensitive Gas Detection by Standalone 3D Nanosensors
14.2.1 Metal Oxide Nanowire / Nanotube Array Gas Sensors
14.2.1.1 Nanowire Arrays
14.2.1.2 Nanotube Arrays
14.2.2 Gas Sensors Based on Opal and Inverted Opal Nanostructures
14.3 Sensor Arrays Based on 3D Nanostructured Gas Sensors
14.4 Conclusion Remarks AcknowledgementReferences 

15. Quantum Dot Sensitized Three Dimensional Nanostructures for Photovoltaic Applications by Jun Wang, Xukai Xin, Daniel Vennerberg, Zhiqun Lin
15.1 Introduction
15.2 Quantum dot sensitized solar cells
15.2.1 Overview
15.2.2 Synthesis of quantum dots and surface functionalization
15.2.3 Quantum dot sensitized nanoparticle films15.2.4 Quantum dot sensitized nanowire arrays
15.2.5 Quantum dot sensitized nanotube arrays
15.2.6 Investigation of charge injection in quantum dot sensitized solar cells
15.2.6.1 Generation of excited electrons
15.2.6.2 Recombination and transportation of excited electrons
15.3 Outlook References 

16. Three Dimensional Photovoltaic Devices Based on Vertically Aligned Nanowire Array by Kai Wang, Jiajun Chen, Satish Chandra Rai, and Weilie Zhou
16.1 Introduction
16.2 Photovoltaic devices based on heteroepitaxial-grown nanowire array integrated with the substrate
16.3 Photovoltaic devices based on axial nanowire array
16.4 Photovoltaic devices based on nanowire array embedded in thin film
16.5 Photovoltaic devices based on nanowire array with core-shell structure
16.5.1 P-N core-shell homojuntion photovoltaic devices
16.5.2 Type II core-shell heterojuntion photovoltaic devices
16.5.2.1 Synthesis of ZnO/ZnSe and ZnO/ZnS core-shell nanowire array
16.5.2.2 Structural and optical properties of ZnO/ZnSe core-shell nanowire array
16.5.2.3 Photoresponse of ZnO/ZnSe nanowire array
16.5.2.4 Morphologies, structure and optical properties of ZnO/ZnS nanowire array
16.5.2.5 Photovoltaic effect of ZnO/ZnS nanowire array
16.6. Summary and perspectives Acknowledgements References 

17. Supercapacitors Based on 3D Nanostructrued Electrodes by Hao Zhang, Gaoping Cao, Yusheng Yang
17.1 Supercapacitors
17.2 Electrochemical double layer capacitors based on 3D Nanostructrued electrodes
17.2.1 Electrodes based on activated carbons and activated carbon fibers: powdered carbons with disordered pore structures
17.2.2 Electrodes based on carbon foams, carbon areogels, and other monolithic carbon: monolithic carbon with disordered micropores17.2.3 Electrodes based on template carbons, graphene, carbide-derived carbons, and hierarchical porous carbons: powdered carbons with high mesopore ratios or reasonable PSD
17.2.4 Electrodes based on carbon nanotubes: monolithic carbons with developed mesoporous structures
17.3 Pseudocapacitors based on 3D Nanostructrued electrodes
17.3.1 Nanostructured metal oxide electrode materials
17.3.2 Nanostructured conducting polymer electrodes materials
17.4 Hybrid capacitors based on 3D Nanostructrued electrodes
17.4.1 Nanostructured electrodes based on metal oxides/carbon composite
17.4.2 Nanostructured electrodes based on polymers/carbon composites
17.5 Conclusions and perspectives References 

18. Aligned Ni Coated Single Wall Carbon Nanotubes under Magnetic Field for Coolant Applications by Haiping Hong and Mark Horton
18.1 Introduction
18.2 Experimental
18.3 Results and Discussion
18.3.1 Thermal Conductivity of Nanofluids Containing Ni-coated Nanotubes
18.3.2 Evidence of Magnetic Alignment of Ni-coated Nanotubes
18.4 Conclusion
18.5 Acknowledgements
References