Scientists have recently discovered a new way to make hydrogen imitate structures and forms of animals and plants’ tissues. This invention is expected to be applied to organic robots.
The study is published in Proceedings of the National Academy of Sciences, promoting new findings as applications for hydrogen-related-professions, such as tissue techniques. Lab technicians at Nanyang Technical University and Carnegie Mellon University (Singapore) have proposed a new patent for this breakthrough.
Technically, animals and plants’ tissues are formed based on the creation of the new biomass materials added to the current forms. Their shades are defined by the difference among these parts at different levels.
Scientists from CMU Changjin Huang, David Quinn, K. Jimmy Hsia, NTU appointed by Prof. Subra Suresh has shown that through the adjustment of oxygen concentration, it is possible to simulate and control the growth of living cells with hydrogel to create the necessary complex 3D shape.
The team found that higher oxygen concentrations slowed the cross-linking of the chemicals in the hydrogel, inhibiting growth in that particular area.
Mechanical constraints, such as flexible cords or glass substrates bonded to the gel, can also be utilized to manipulate the sequences and create hydrogels into complex structures applied in robots.
Such complex organized structures are crucial for the performance of specialized body functions. For instance, the human small intestine is covered with folds found under a microscope called villi, which boosts the surface area of the pipe to absorb food nutrients more efficiently.
It is claimed that this new technique is different from the previous methods of creating 3D structures by adding / printing or removing layers of materials. However, this technique relies on the continuous