Another brick in the wall: DNA nanotechnology has come a long way since its initial beginnings. This would not be possible without the continued development of methods for DNA assembly and new uses for DNA as a material. This Special Issue highlights some of the newest building blocks for nanodevices based on DNA.

The literature concerning ethical issues associated with nanotechnologies has become prolific. However, it has been claimed that ethical problems are only at stake with rather sophisticated nanotechnologies such as active nanostructures, integrated nanosystems and heterogeneous molecular nanosystems, whereas more basic nanotechnologies such as passive nanostructures mainly pose technical diffic...

Nanotechnology is increasingly being employed in the areas of food production and packaging. Public perception will be crucial to the realization of these technological advances. We examined how lay people (N=153) perceive nanotechnology foods and nanotechnology food packaging, and we examined the factors that influence willingness to buy these products. Participants received some general infor...

the full adders (fas) constitute the essential elements of digital systems, in a sense that they affect the circuit parameters of such systems. with respect to the mosfet restrictions, its replacement by new devices and technologies is inevitable. qca is one of the accomplishments in nanotechnology nominated as the candidate for mosfet replacement. in this article 4 new layouts are presented fo...

Abstract Hyperpigmentation is a common and major skin problem that affects people of all types. Despite the availability various depigmentation active ingredients for hyperpigmentation disorder, none them are completely satisfactory due to their poor permeability through layer significant toxicity, thereby causing severe side effects such as irritative dermatitis, erythema, itching, flaking. Na...

As an emerging nanotechnology, quantum-dot cellular automata (QCA) has been considered alternative to CMOS technology that suffers from problems such as leakage current. Moreover, QCA is suitable for multi-valued logic due the simplicity of implementing fuzzy in a way much easier than technology. This paper uses quaternary cell with two isolated layers because requiring three particles design t...