Semiconductor micro- and nanoneedles for microinjections and ink-jet printing

Physica Status Solidi (b)

2006

This brief overview focuses on the fabrication methods and properties of semiconductor and metal nanoshells based on self-rolling or buckling of strained ultrathin films. Previously, it was shown that thin epitaxial heterofilms (down to two monolayers for InGaAs/GaAs) can be controllably released from the substrates and converted into micro-and nanoshells, including tubes and corrugations. The diameter of the tubes obtained was down to 2 nm, and the period of the nanocorrugated systems was down to 10 nm. New results for quantum confinement in semiconductor and hybrid nanoshells and for fabrication of complex nanoshells are reported. Possible extension of this approach to the case of carbon shells is discussed.

Section: Original Papermentioning

confidence: 99%

Section: Original Papermentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

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Precise, molecularly thin semiconductor shells: from nanotubes to nanocorrugated quantum systems

Physica Status Solidi (b)

2006

“…Such tubes can be used for the development of nanojet printers [59]. In our experiment, a solution contained in a microtube was locally heated by a resistive microheater prepared from Ni foil.…”

Section: Elements For Micro-and Nanofluidic Mems/nemsmentioning

confidence: 99%

3D heterostructures and systems for novel MEMS/NEMS

Селезнев

Science and Technology of Advanced Materials

et al. 2009

In this review, we consider the application of solid micro-and nanostructures of various shapes as building blocks for micro-electro-mechanical or nano-electro-mechanical systems (MEMS/NEMS). We provide examples of practical applications of structures created by MEMS/NEMS fabrication. Novel devices are briefly described, such as a high-power electrostatic nanoactuator, a fast-response tubular anemometer for measuring gas and liquid flows, a nanoprinter, a nanosyringe and optical MEMS/NEMS. The prospects are described for achieving NEMS with tunable quantum properties.

“…In a multilayer structure the bottom film acts as sacrificial layer and is selectively etched. 14 In the case of polymeric materials, the bottom film exhibits a selective swelling response that also induces mechanical stress. 4 Multilayer configurations are employed for inducing self-scrolling even for organic polymers, in general via selective swelling 15 or thermal expansion mismatch.…”

Section: Introductionmentioning

confidence: 99%

Strain-driven self-rolling of hybrid organic–inorganic microrolls: interfaces with self-assembled particles

et al. 2012

Strain driven micro and nanoroll fabrication is generally restricted to multilayer and multiprocessing systems, limiting the ability to exploit self-organization at different length scales. We have designed a hybrid organic-inorganic single-layered film with a surface that responds selectively to external stimuli, resulting in mechanical strain and self-rolling in one-step fabrication. The scrolling is initiated by water and any aqueous solution of molecules or colloidal particles. During scrolling, the different species in solution remain entrapped in the rolls; the constrained environment at the interface of the roll walls pushes the particles to organize into ordered structures. We used this rolling process to create self-assembled hybrid films with well-ordered layers of gold nanoparticles and opals of polystyrene nanospheres. These films also respond selectively to solvents, allowing the easy release of molecules/particles entrapped at the interface.