frontpage Coloring of nanowires without colorants

A new fabrication technique in nanotechnology: Iterative size reduction 

[ Reinvention of fiber drawing in the age of nanotechnology: Production of indefinitely long nanostructures which pave the way for novel applications, including nanowire-based large-area flexible sensor platforms, phase change memory, nanostructure-enhanced photovoltaics, semiconductor nanophotonics, dielectric metamaterials, linear and nonlinear photonics and nanowire-enabled high-performance composites. ]

Nanowires constitute an exciting research field in nanotechnology, regarding their unprecedented characteristics compared to their bulk counterparts. Although fabrication and characterization of nanowires are quite well-established, serious problems persist in large scale integration of nanowires into functional devices, impeding their utilization in practical applications.

The objective of this project  is the realization of a radically new nanowire fabrication technique, and exploration of its potential for nanowire based science and technology. The proposed method involves fabrication of unusually long, ordered nanowire and nanotube arrays in macroscopic fibres by means of an iterative thermal co-drawing process. Starting with a macroscopic rod with an annular hole tightly fitted with another rod of another compatible material, by successive thermal drawing we obtain arrays of nanowires embedded in fibres. With the method, wide range of materials, e.g. semiconductors, polymers, metals, can be turned into ordered nanorods, nanowires, nanotubes in various cross-sectional geometries.

Potentially, these nanowires are advantages over on-chip nanowires in building flexible out of plane geometries, light weight, wearable and disposable devices. Ultimately, attaining ordered arrays of 1-D nanostructures in an extended flexible fibre with high yields will facilitate sought-after but up-to-now difficult applications such as the large area nanowire electronics and photonics, nanowire based scalable phase-change memory, nanowire photovoltaics, and emerging cell-nanowire interfacing.

Related projects:
-Piezoelectric polymer nanofibers for sensing, energy generation, and artificial skin [ERC Proof of Concept]
Funding Agency: ERC- European Research Council
Funding Amount: 150,000 Euro
Period: 2016-2018

-Fabrication and characterization of dielectric encapsulated millions of ordered kilometer long nanowires and nanotubes and their applications [ERC Consolidator]
Funding Agency: ERC- European Research Council
Funding Amount: 1,495,400 Euro
Period: 2012-2017

-Polymer encapsulated very long metal/semiconductor/polymer nanowire and nanotube arrays and their applications
Funding Agency: TUBITAK (COST)
Funding Amount: 178,000 USD
Period: 2011-2013

Representative publications:
Arrays of indefinitely-long, uniform nanowires and nanotubes
M. Yaman, T. Khudiyev, E. Ozgur, M. Kanik, O. Aktas, E. O. Ozgur, H. Deniz, E. Korkut, Mehmet Bayindir
Nature Materials, volume 10, page 494 (2011)
Documents: [ Cover Picture: Nanowires without end ] [ Manuscript ] [ Supplementary Information ]
Stories: [ New Frontiers in Nanofabrication ] [ Producing Kilometer-long Nanostructures ] [ Interview with Researchers ]
News: [ Science News: New Technique Spins Superlong Nanowires ] [ Nanowerk: A new top-down nanofabrication scheme ] [ Nano Times: Nanowires and Nanotubes ] [ Nano Today: Nanowire growth stretches to extraordinary lengths ] [ Bilkent News: Nanostructures without end ]

Macroscopic assembly of indefinitely long and parallel nanowires into large area photodetection circuitry
E. Ozgur, O. Aktas, M. Kanik, M. Yaman, and Mehmet Bayindir
Nano Letters, volume 12, page 2483 (2012)
Documents: [ Supporting Information ]
Cover proposal: [ Macroscopic Nanowire Photodetection Circuitry ]

Tailoring self-organized nanostructured morphologies in kilometer-long polymer fiber
T. Khudiyev, O. Tobail, and Mehmet Bayindir
Scientific Reports, volume 4, article number 4864 (2014)
[ Supplementary Information ] [ Video 1 ] [ Video 2 ] [ Video 3 ]

Spontaneous high piezoelectricity in Poly (vinylidene fluoride) nanoribbons produced by iterative thermal size reduction technique
M. Kanik, O. Aktas, H. S. Sen, E. Durgun, and Mehmet Bayindir
ACS Nano, volume 8, page 9311 (2014)
[ Supporting Information ] [ Video 1 ] [ Video 2 ] [ Video 3 ] [ Video 4 ] [ Cover Proposal ]

Motion and sound activated, 3d printed, chalcogenide based triboelectric nanogenerator
M. Kanik, M. G. Say, B. Daglar, A. F. Yavuz, M. Dolas, M. El-Ashry, and Mehmet Bayindir
Advanced Materials, volume 27, page 2367 (2015)
[ Supporting Information ] [ Back Cover ] [ Video 1 ] [ Video 2 ] [ Video 3 ] [ Video 4 ]

Selected pictures: