Geometry Effect on the Strain-Induced Self-Rolling of Semiconductor Membranes

Chun, Ik Su; Challa, Archana; Derickson, Brad; Hsia, K. Jimmy; Li, Xiuling

doi:10.1021/nl101669u

Cited by 120 publications

(153 citation statements)

References 22 publications

Supporting

Mentioning

145

Contrasting

Order By: Relevance

“…1(c). As reported previously, the rolling-up direction is mainly determined by the geometry of the released pattern, 27 and the Young's modulus of the released material. 28 For the Ge/Cr rectangle pattern with the geometry particularly designed, it also rolls up from the long side [FIG.…”

mentioning

confidence: 62%

Uniaxial and tensile strained germanium nanomembranes in rolled-up geometry by polarized Raman scattering spectroscopy

et al. 2015

View full text Add to dashboard Cite

We present a rolled-up approach to form Ge microtubes and their array by rolling-up hybrid Ge/Cr nanomembranes, which is driven by the built-in stress in the deposited Cr layer. The study of Raman intensity as a function of the angle between the crystal-axis and the polarization-direction of the scattered light, i.e., polarized Raman measurement reveals that the strain state in Ge tube is uniaxial and tensile, and can reach a maximal value 1.0%. Both experimental observations and theoretical calculations suggest that the uniaxial-tensile strain residual in the rolled-up Ge tubes correlates with their tube diameters, which can be tuned by the thicknesses of the Cr layers deposited. Using the polarized Raman scattering spectroscopy, our study provides a comprehensive analysis of the strain state and evolution in self-rolled-up nano/micro-tubes.

show abstract

mentioning

confidence: 62%

Uniaxial and tensile strained germanium nanomembranes in rolled-up geometry by polarized Raman scattering spectroscopy

et al. 2015

View full text Add to dashboard Cite

show abstract

“…As shown by Chun et al [23,24], tubes grown on GaAs (001) substrates preferentially roll-up along the ⟨001⟩ directions. Additionally, the actual rolling direction of tubes is determined by geometrical conditions.…”

Section: Resultsmentioning

confidence: 88%

Deviation from Regular Shape in the Early Stages of Formation of Strain-Driven 3D InGaAs/GaAs Micro/Nanotubes

Frigeri¹,

Seravalli²,

Calicchio³

et al. 2017

Journal of Nanomaterials

View full text Add to dashboard Cite

Single-crystalline InGaAs/GaAs semiconductor micro/nanotubes have been obtained by the strain-driven self-rolling mechanism. This approach combines the advantages of bottom-up (epitaxial growth) and top-down (postgrowth processing) techniques, offering an exceptional opportunity to realize complex three-dimensional nanoarchitectures by using conventional photolithography and wet-etching processes. The method employed to obtain micro/nanotubes with selected orientation and length is described in detail. By means of high-resolution scanning electron microscopy characterization, we show a clear shape difference between single-wall and multiwalls tubes and we discuss it on the basis of strain release, taking into account also possible shape deformations induced during micro/nanotubes drying. We analyse the In-segregation profile in the nominal In 0.20 Ga 0.80 As/GaAs bilayer and we show its effect on the actual diameter of the tubes, concluding that a more accurate description of the structure should consider an In 0.20 Ga 0.80 As/In 0.10 Ga 0.90 As/GaAs trilayer. This work will be useful to set up reliable methodologies for the realization of straindriven micro/nanotubes with controlled properties, necessary for their implementation in a large number of application fields.

show abstract

“…From (14) it is clear that to increase the energy density it is desired to find a material with a higher Young's modulus and larger maximum strain. One material that has been identified is graphene, as it has a higher maximum strain and higher Young's modulus than silicon.…”

Section: Simulationmentioning

confidence: 99%

“…Various factors that determine rolling behavior, such as the direction of rolling and the shape of the final rolled structure of any strain mismatched bilayer films have also been identified and investigated in the literature. [13][14][15] …”

Section: Introductionmentioning

confidence: 99%

The strain capacitor: A novel energy storage device

Shuvra

McNamara

2014

AIP Advances

View full text Add to dashboard Cite

A novel electromechanical energy storage device is reported that has the potential to have high energy densities. It can efficiently store both mechanical strain energy and electrical energy in the form of an electric field between the electrodes of a strain-mismatched bilayer capacitor. When the charged device is discharged, both the electrical and mechanical energy are extracted in an electrical form. The charge-voltage profile of the device is suitable for energy storage applications since a larger portion of the stored energy can be extracted at higher voltage levels compared to a normal capacitor. Its unique features include the potential for long lifetime, safety, portability, wide operating temperature range, and environment friendliness. The device can be designed to operate over varied operating voltage ranges by selecting appropriate materials and by changing the dimensions of the device. In this paper a finite element model of the device is developed to verify and demonstrate the potential of the device as an energy storage element. This device has the potential to replace conventional energy storage devices.

show abstract

Geometry Effect on the Strain-Induced Self-Rolling of Semiconductor Membranes

Cited by 120 publications

References 22 publications

Uniaxial and tensile strained germanium nanomembranes in rolled-up geometry by polarized Raman scattering spectroscopy

Uniaxial and tensile strained germanium nanomembranes in rolled-up geometry by polarized Raman scattering spectroscopy

Deviation from Regular Shape in the Early Stages of Formation of Strain-Driven 3D InGaAs/GaAs Micro/Nanotubes

The strain capacitor: A novel energy storage device

Contact Info

Product

Resources

About