Green fabrication of a complementary electrochromic device using water-based ink containing nanoparticles of WO and Prussian blue.

We fabricated a complementary electrochromic device (ECD) by using water-dispersible nanoparticles (NP) of Prussian blue (PB) and WO by using a wet process, which involved just coating. Although the ECD had a thick WO film, it showed much higher contrast compared to other techniques. In addition, the ECD also showed fast optical switching speed and high durability over 100 cycles because of wettability control of NP inks.

Identification, cloning, and sequencing of the genes involved in the conversion of D,L-2-amino-delta2-thiazoline-4-carboxylic acid to L-cysteine in Pseudomonas sp. strain ON-4a.

The newly isolated strain Pseudomonas sp. ON-4a converts D,L-2-amino-delta2-thiazoline-4-carboxylic acid to L-cysteine via N-carbamoyl-L-cysteine. A genomic DNA fragment from this strain containing the gene(s) encoding enzymes that convert D,L-2-amino-delta2-thiazoline-4-carboxylic acid into L-cysteine was cloned in Escherichia coli.