Microfluidics

NANO PATTERNED SiO2 /TiO2 FLOW-CELLS FOR DNA SEQUENCING

The concept of microfluidics

Flow cells for DNA sequencing are microfluidic devices designed to capture and process DNA molecules for high-throughput sequencing. They contain nanostructured wells where DNA fragments are immobilized and sequenced in parallel. These cells enable real-time monitoring of biochemical reactions, enhancing speed, accuracy, and scalability in sequencing technologies. Key advancements focus on increasing read length, sensitivity, and cost-effectiveness.

NIL SiO2
TiO2 / SiO2
DNA BLOB

SEM images of the surfaces prepared by NIL from Solnil resin and technology, showing a square array of 200 nm bowl wells. The pattern is made of non-bonding highly transparent material. The bonding material (TiO2) is selectively deposited at the bottom of the wells after the imprinting process using a Solnil patented liquid deposition method. The SEM image on the right reveals DNA blobs trapped in each one of the wells. Such patterns can be processed on large surfaces of glass, Si, quartz,…The stability in relevant biologic analysis liquids (cycling and static modes) has been qualified.

Why is it different?

all inorganic
highly stable
200 nm traps

Performance and practical usage

Materials

Transparent hydrophobic SiO2

Refractive index = 1.42

Absorption < 0.1% (RGB)

Versatility
Compatible with all biologic macromolecules and fluorescent labeling dyes
Chemical stability
> 100 cycles with alternative high and low pH solutions
Durability
All inorganic, no organic surface grafting
Trapping efficiency
High surface charge contrast
Passed test
15h in buffer solution at 65°C
Condition of processing

Large surface (200 mm)

Glass or plastic substrates 

Down to 200 nm entropic traps / square or hexagonal arrays

On demand trap’s aspect ratio from 0.1 to 2.

Are you developing the optics of the future?
This is what solnil does.​

To discuss your technical needs or to initiate a collaboration, contact our team.