Optical slot waveguides fabricated on the silicon-on-insulator (SOI) platform enables direct light–matter interaction [1]. Its ring resonators are promising for trace-gas sensing [2], microparticle trapping [3], and nano-optomechanical mass and displacement measurements [4]. To date, slot ring/racetrack structures on buried oxide (BOX) have been adopted in the above applications. However, their...

In this article we study the electron energy states for three-dimensional (3D) semiconductor quantum rings. Our model formulation includes: (i) the effective one-band Hamiltonian approximation, (ii) the position and energy dependent quasi-particle effective mass approximation, (iii) the finite hard wall confinement potential, and (iv) the Ben Daniel-Duke boundary conditions. We solve the 3D mod...

Based on density functional theory (DFT) at the B3LYP level, we investigated interaction of DNA nucleobases with carbon nano-rings in armchair and zigzag shapes. Van der Waals correction was applied to describe long range term bipolar interaction. Results indicate that a net electric charge not transferred between bases nano-rings. This indicates is physical type. Outcomes show following order ...

We show the results obtained from the fabrication and characterisation of MgB2 loops with two nano-bridges as superconducting weak links. These ring structures are made to operate as superconducting quantum interference devices and are investigated as readout system for cryogenics NEMS resonators. The nano-constrictions are fabricated by EBL and ion beam milling. The SQUIDs are characterised at...

The acquisition of substantial dermal sealing determines the prognosis of percutaneous titanium-based medical devices or prostheses. A nano-topographic titanium surface with ordered nano-spikes and pores has been shown to induce periodontal-like connective tissue attachment and activate gingival fibroblastic functions. This in vitro study aimed to determine whether an alkali-heat (AH) treatment...

Nanopartmles have been used as an approach to improve the pharmacodynamic and phannacokinetie propertiesof various drues. Amino acids have been considered to be useful to make such nano particles because ofthocompatithe and biodegradable characteristic. The quantum mechanical method that was chosen to analyze inethio hexa peptide nano ring]. The structure of some peptide nanorrigs as well as th...

The 1-, 2-, and 3-dimensional structures obtained from conjugated rings of carbon atoms are reviewed. They include finite small and large molecules (benzenoids, collarenes, beltenes, cyclacenes, cyclophenacenes, Möbius analogs, nanotori) and infinite macromolecules, nets and tilings (graphene, defected graphene, fractal benzenoids, nano-tubes, nano-cones, etc.). A few challenges for future expe...

in this note we introduce the notion of weak mccoy rings as a generalization of mccoy rings, and investigate their properties. also we show that, if is a semi-commutative ring, then is weak mccoy if and only if is weak mccoy.

Chemists have been fascinated for a long time with phenomenon of bimolecular spectroscopy and dynamics of Nano–sized molecules and clusters as cross–linking–induced anti–cancer and Immune-Oncology (I-O) Nano drugs delivery in DNA/RNA of human cancer cells’ membranes under synchrotron radiations [1–25]. This concept generally associated with anti– cancer and Immune-Oncology (I-O) Nano drugs deli...