We present new algorithms to synthesize exact universal reversible gate library for various types of gates and costs. We use the powerful algebraic software GAP for implementation and examination of our algorithms and the reversible logic synthesis problems have been reduced to group theory problems. It is shown that minimization of arbitrary cost functions of gates and orders of magnitude are faster than its previously counterparts for reversible logic synthesis. Experimental results show that a significant improvement over the previously proposed synthesis algorithm is obtained compared with the existing approaches to reversible logic synthesis.

Nanowire FET with the core–shell structure has not only excellent short-channel effect and enhanced conductance capability due to reduced scattering effect and unqiue low-dimensioal structure, but also is compitable with the traditional CMOS processing, thus, it may be the promise one among the bulk MOSFET alteratives to extend CMOS integratd circuit into 7 nm generation beyond. The work in the ULTRA group explored the novel structure, transport mechanism, simulation tool and compact modeling, strain effect, eneryg band engineering, so to develop the core–shell nanowire device physics theory, provide the new simulation tool, build an efficient compact model, and establish new fine process integration technique. The work deliverables will help device scientists and circuit designers deeply understand the pontential and function of the silicon-based core–shell nanowire FET application beyond 10 nm CMOS integrated circuit, know how to realize the optimized circuit performane from the fine processing technology and design.

Quantum-Dot Cellular Automata (QCA) provides low power, high device density and faster switching speed. Nano-scale communication devices with low power dissipation can be achieved based on QCA technology. Several Nanocommunication circuits like nanorouter, signal distribution network, parity generator, parity checker, user authenticator, pipeline architecture, data path selector have already been reported by the researchers. The application of QCA in designing the architecture for Nanocommunication system increases the device density and computational fidelity of the computational channels. Low power consumption of QCA is useful to resist against power analysis attack. Besides, the embedding procedure of reversible logic into QCA is also helpful to achieve lossless low power dissipated Nanocommunication devices. In this paper, the application of QCA in designing the architecture of nanocommunication networks have been discussed and explored. Besides, the embedding procedure of reversible logic into QCA and their uses in designing of nanocomputing devices are also illustrated.

Considering that the motions of the quasi particles from nanostructures take place on continuous but nondifferentiable curves, in the frame of the Extended Scale Relativity Theory Model (in its Schrödinger—type variant), it is proved that the imaginary part of a scalar potential of velocities can be correlated with the fractal information and, implicitly, with a tensor of "tensions" (a measure of interactions at nanoscale). This tensor becomes fundamental in the defining of any and all constitutive laws of material at nanoscale. In such a procedure, a specific differential geometry based on a Poincaré—type metric of the Lobacevski plane (which is invariant to the homographic group of transformations) and also a specific variational principle (whose field equations represent a harmonic map from the usual space into the Lobacevski plane) occur. Moreover, the fractal information is contained in the nanostructure and thus, in its own space associated to it. In this conjecture, the role of informational energy in some biological processes (human fertilization, arterial occlusion) is highlighted.

Classic sensors with a rugged design offer a signal level that is at least high enough to be passed over to a hybrid integrated readout circuit, for example, by wire bonding. In contrast, emerging nanosensors are often merely emitting signals in the pico-ampere regime. However, the outperforming response sensitivity of these sensors is the weak point in the design. While passing over the signal to the outer world, the signal is superimposed by noise picked up from the wiring. Therefore, different strategies for an appropriate signal processing are presented in this paper.

Recent progress in nanowire fabrication technology allows one to combine different types of III–V nanowires on a single substrate. Such fabrication was also demonstrated on a silicon substrate. These achievements open a new horizon of designing photonic and optoelectronic devices that utilize III–V nanowires and can be CMOS-compatible at the same time. In our recent research, we investigated the possibility to combine three different types of III–V nanowires on a single silicon substrate to obtain a lateral spectrum splitting multi-terminal nanowire array solar cell. We performed a numerical optimization of the array geometry to demonstrate that the resulted structure is able to reach a high detailed balance efficiency limit of 48.3% without light concentration. Here, we extend the analysis of the lateral spectrum splitting to a wider range of nanowire arrays that consist of several nanowire types (each forming a periodic subarray). We consider different nanowire arrangement patterns including non-rectangular periodic grids as well as different numbers of nanowires per array in order to find the limiting factors of nanowire-based lateral spectrum splitting. In addition to this, we also perform an analysis of the influence of transparent contacts on the spectrum splitting efficiency.

Classic processes for manufacturing integrated circuits in CMOS technology usually have to deal with the composition of geometries that result in solid layers. However, these layers may exhibit rugged surfaces which have to be planarized by suitable techniques before further process steps are performed. Today, the fabrication of many microelectromechanical systems (MEMS) utilize established processes on the basis of well-known CMOS technology. Especially the mechanical parts of MEMS use geometries that show structures with cavities, suspended formations or similar shapes, sophisticated to design. If a planarization or equivalent rough process is required, these fragile units often make a further handling difficult or nearly impossible. Therefore different strategies for an appropriate development of stacked freely suspended hexagonal grids for gas sensor applications are investigated in this article.

Starting from the first exfoliated graphene flakes in 2004, 2D-materials have conquered a broad field of possible future applications. Among these, 2D-material based circuits and sensors are very promising candidates for a contemporary industrial adoption. Nevertheless, there are a lot of challenges to master before the goal of a profitable economic adjustment can be achieved. Therefore, we focus on electrostatic manipulation of 2D-materials and nanowires with regard to the doping properties and the analysis by the help of buried chip structures in this paper.

This paper presents a model of molecular ultrathin crystalline film and analysis of optical properties of these spatially very restricted structures. Using the two-time dependent Green's functions the energy spectrum and possible exciton states were determined and the dynamic permittivity was calculated. It was shown that the appearance of localized states, which define schedule and determine the number of resonant absorption lines in the infrared area of the external electromagnetic radiation.

Industrial applications require more and more temperature stable and durable pressure sensors. Diamond offers many properties that make it interesting for micromechanical devices like pressure sensors in harsh environments. Especially the good chemical inertness, high band gap and high thermal conductivity is beneficial for such applications. An important advantage is the possibility to integrate (ultra-)nanocrystralline diamond films into the common silicon technology. The ability to grow electrically conductive ultrananocrystalline diamond films that exhibit a piezoresistive effect make it conceivable to fabricate hybrid pressure sensors composed of diamond and silicon. We present the successful fabrication and characterization of a membrane pressure sensor made of nanocrystalline diamond grown on a silicon substrate. The sensor consists of a nanocrystalline diamond membrane with ultrananocrystalline piezoresistive diamond sensor elements. The piezoresistive, ultrananocrystalline material exhibits a gauge factor of 6.3 and we show that the system has potential to become competitive to silicon-based piezoresistive pressure sensors.