Laboratory for Emerging Technologies
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Opto-Electronics

  • All-silicon lasers
  • Active and Passive WDMs
  • OEIC enabling technologies
  • Quantum Dots and Anti-Dots (lateral semiconductor superlattices made using Anodized Aluminum Oxide (AAO) templates, Reactive Ion Etching (RIE), and Molecular Beam Epitaxy (MBE))
  • Non-Linear Optics (NLO) studies of nano-materials
  • Preparation of stable, highly efficient NLO materials using AAO membranes
  • Low-dimensional semiconductor structures
  • Plasmonic chips (surface plasmon activity in low-dimensional metallic nanostructures)
  • Electo-optically active materials
  • Optical interactions between nanowires
  • Active and passive photonic devices
  • Heterostructures made of carbon nanotubes (CNTs) and semiconducting substrates

1_Scloutier Personal Abs-spec

Normalized absorption spectra of periodic gold-nanodot arrays through surface plasmon resonance for different incidence angles.

Cloutier, S. G.

Scloutier Laser

BSG (Binary Super Grating)

Cloutier, S. G.

Ref 153

PL spectrum of ZnO nanorods grown on GaN showing only the UV exciton peak; and on Si(100) showing the UV and defect-induced visible peak in the inset.

H. Chik, J. Liang, S. G. Cloutier, N. Kouklin, and J. M. Xu, "Periodic array of uniform ZnO nanorods by second-order self-assembly" Appl. Phys. Lett. 84, 3376-3378, (2004)

Ref 139 E-spectrum

(a) Energy spectrum of a 32x32 array of nanowires (b) Top view of a typical metastable state of the array (c) Top view of the ground state

A. J. Bennett and J.M. Xu, "Simulating the magnetic susceptibility of magnetic nanowire arrays", Appl. Phys. Lett., 82(19), 3304-3306, 2003.

Ref 147 Current-volt

Current voltage characteristics of the CNT=Si structures at different temperatures. The same data are plotted in parts (a) and (b)

Ref 147 Device-struc

Schematic representation of the device structure.

Ref 147 Typical SEM

Typical scanning electron microscopy image of the CNTs grown in the templates.

M. Tzolov, B. Chang, A. Yin, D. Straus, G. Brown, J.M. Xu, "Electronic transport in a controllably grown carbon nanotube-silicon heterojunction array", Phys. Rev. Lett., 92(7), 075505, 2004.

Ref 152 1

(a) Current–voltage characteristic of Y-junction CNTs. (b) Differential conductance of Y-junctions.

Ref 152 2

Double logarithmic plot of Y-junction differential conductance vs voltage for (a) positive bias and (b) negative bias.

Ref 152 3

(a) Diagram of Y-junction CNT geometry.
(b) Ratio of Y-junction conductance G(V)/ G(-V), for various temperatures.

C. Papadopoulos, A.J. Yin, and J.M. Xu, "Temperature-dependent studies of Y-junction carbon nanotube electronic transport", Appl. Phys. Lett. 85, 1769-1771, 2004.

1_Hchik Thesis 2

Field alignment of a single nanorod

Hchik Thesis 1

ZnO nanorod grown on a CNT with a zoomed in view of the
heterojunction

Hchik Thesis 3

Field alignment of a group nanorod

Hchik Thesis 4

ZnO nanorods aligned along the electric field lines

Hchik Thesis 5

Schematic of field alignment between two probes

Hchik Thesis 7

A three-terminal random network device
schematic

Chik, H (2004). Zinc Oxide Nanorods. PhD Thesis, Brown University, RI.


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