Entries by AllAdmin

Great success with Medusa 82 at the MNE

Once again Allresist participated in the MNE with a large, attractive booth and new innovations. As in past years, the interest of the conference participants in our diverse new developments was great. The absolute highlight however was the introduction of our Medusa 82, an excellent alternative to HSQ resists.

Structuring by ablation of the resist materials

The basic principle of laser ablation is that laser irradiation of a certain wavelength introduces so much energy into the resist material which is modified for ablation that the resist polymer is destroyed and then vaporizes as low molecular weight fragments.

Phoenix 81 – Storage conditions and dispatch

In the final stage of the Eurostar PPA-Litho project which was aimed to develop the resist Phoenix, we achieved to generate far more stable PPA polymers by optimizing the synthesis procedure. Pure polyphthalaldehydes which were subjected to a “stress test” for 14 days at 37 °C showed no decomposition. These resists can thus be shipped without cooling; this however only applies to pure PPA polymers.

Black-Protect – stable protective coating for HF and KOH etchings

Allresist offers the protective coating SX AR-PC 5000/40 for HF and KOH etchings already for a few years. Layers of 5 μm are able to withstand a 48 % hydrofluoric acidic solution for several hours. Also 40 % KOH solutions for silicon etchings do not attack the layer.

Bleachable resists

The basic idea behind dyed resists developed within the scope of the Photoenco project (June 2016 – May 2019) was that dyes are mixed into the polymer matrix of the resist which then either change their colour or become colourless upon irradiation.

Allresist at the EIPBN 2018 Conference in Puerto Rico

Allresist attended the “triple-beam” conference EIPBN 2018 for the first time. Matthias Schirmer and Dr. Christian Kaiser answered many inquiries at the exhibition stand, especially questions regarding electron beam resists.

2L-Lift-off system AR-P 617 – AR-P 8100

Anisole PPA solutions can be coated on PMMAcoMA 33 (AR-P 617). The single layers add up in this case; no mixing of layers occurs, which is a decisive prerequisite to realise defined 2- or also 3-layer systems.