Liquid handling, spotting and automated dispensing of liquid amounts in the sub-microliter range is an essential step in many production processes as well as in R&D applications. The production of biochips, lateral flow or lab-on-a-chip devices, the printing of microarrays and the fabrication of biosensors all require a precise and reliable handling of very small amounts of fluids.
Microdrop Technologies provides a variety of non-contact micro-dispensing products ideally suited for this demanding application field. High-precision dispensing of volumes in the picoliter and nanoliter range enables the user to print spots or lines and structures of aqueous solutions as well as solvent-based liquids in a wide viscosity range.
For evaluation of the applicability and capability of the Microdrop Technology a Microdrop Liquid Test is recommended.
This test will investigate the following :
- basic dispensing possibility of the fluid
- selection of the best dispenser head
- configuration performance of the dispensing
- process max. / min. dispense frequency
- droplet velocity
- optimal nozzle diameter
- driving parameters of the dispenser head
- special characteristics and handling options which need to be considered (e.g. drop shape, light sensitivity)
After the Microdrop Liquid Test has proven that the material is dispensable by one of the microdrop products, additional application and prototyping tests may be carried on. The investigations in the Microdrop Lab are aiming at optimal solutions for individual application needs and optimal processes. Here the material is deposited on test substrates or components and the whole process including the interaction between material and substrate is investigated; e.g.:
- wetting behavior
- drying effect
- line spreading
- structure building (e.g. line width, thickness, height)
- interconnection (e.g. bonding application)
- process parameters (e.g. temperature conditions, cycle time, throughput)
The Application Test provides an optimized production process or handling instructions about the investigated application. The dispensing system best fitted for the application will be finally identified.