Periodic Nanostructure

For Scientific Research & Industry Modernisation.

Fig. Single printed 2D periodic structure arrays

(Source from: Lin, H., Jia, B. and Gu, M. (2011). Dynamic generation of Debye diffraction-limited multifocal arrays for direct laser printing nanofabrication. Optics Letters, [online] 36(3), pp.406–408.)

The most common of the periodic nanostructures are photonic crystals, which are regular optical structures made from periodic arrangements of media with different refractive indices. These materials are capable of controlling photons at specific frequencies due to photonic bandgap or photon scattering, which affects photon transport, absorption and reflection properties. The traditional methods of fabricating periodic nanostructures are mainly photolithography, electron beam exposure and etching, and laser nano-3D printing techniques. The advantage of laser nano-3D printing technology is that it can produce arbitrary 3D periodic nanostructures.

Industry Challenge

Traditional laser nano-3D printing technology uses single-focus writing, which has limited speed and long production time, hindering mass production

Solution Overview

To address the problems of the above process, with our deep understanding of optical field modulation, we use parallel printing that generates multi-focus arrays to fabricate periodic nanostructures, which can realize rapid processing of periodic nanostructures. Based on this, we can further control the shape and nature of each focus to achieve arbitrary optical field modulation, which is illustrated as below images:

Arbitrarily controlled focal point arrangement

c-shaped focus array and production results

Single-printed 2D periodic structure arrays

3D structures made by parallel processing

Customer Value

Fabrication speed can be improved by hundreds of times

Applications

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Application Scenario

Widely used in photonic crystal structures, metasurface structures, optical components, micro-lens arrays

Surface fabrication & Microstructure

Laser surface treatment of materials is an important technology because it can enhance various device properties such as surface strength, hardness, roughness, coefficient of friction, chemical resistance, and corrosion resistance of various materials. Such improvements to material surfaces are not only ideal when wear rates and shear stresses are high but can also maintain or extend the functional life of components by covering microcracks in the surface (e.g., in industrial ceramics) and repairing defects and breakage.

 

Compared to traditional laser fabrication based on thermal mechanisms, the NanoPrint 3D Intelligent Laser Nano-fabrication System’s femtosecond technology is a cold process. The high-intensity femtosecond pulses provide a localized hyperthermal environment (local temperatures near the focal point can exceed several thousand degrees), but the overall temperature of the workpiece does not rise. Therefore, this kind of fabrication has many advantages such as high precision, good manipulation, rich response mechanism, high flexibility, high controllability, smooth processing surface, low waste, etc. It is the first choice for scientific research, industrial applications, especially plays an important role in industrial precision cutting, welding, surface treatment and industrial marking.

Microfluidics

Microfluidics means 1) the miniaturization of experimental instruments and equipment (tens to hundreds of microns in size); 2) the fact that the experimental object is a fluid (nanolitres to litres in volume); 3) the control, manipulation and handling of fluids on miniaturized equipment. Microfluidics is the integration of the basic operating units of sample preparation, reaction, separation, and detection of biological, chemical, and medical analytical processes onto a micron-scale chip, which automatically completes the entire analytical process.

 

The microfluidic chip is the main platform for the implementation of microfluidic technology. Its most important feature is that a multifunctional integrated system and a large number of composite systems of micro-all-analysis systems can be formed on a chip. The microfluidic chip uses micromachined electrical processing technology similar to that of semiconductors to build a microfluidic system on the chip, which reproduces experimental and analytical processes on a chip structure consisting of interconnected pathways and liquid-phase chambers, loaded with biological samples and reaction solutions followed by micromechanical pumps. Methods such as electrohydraulic pumping and electroosmotic flow drive the flow of the buffer in the chip, forming a microfluidic path to perform one or more consecutive reactions on the chip.

 

The NanoPrint 3D intelligent laser nano-fabrication system uses a variety of detection systems such as laser induced fluorescence, electrochemistry and chemistry as well as many assays combined with analytical tools such as mass spectrometry have been used in microfluidic chips for rapid, accurate and high throughput analysis of samples.