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On behalf of all organizers, we would like to welcome you to the 15th IEEE International Conference on Nanotechnology (IEEE NANO 2015). This year the conference is taking a journey to Rome, the Eternal City, following the successful conferences held in Maui (2001), Washington D.C. (2002), S. Francisco (2003), Munich (2004), Nagoya (2005), Cincinnati (2006), Hong Kong (2007), Arlington (2008), Genoa...
The fabrication of biocompatible composites, consisting of magnetite nanoparticles embedded into a matrix of meltable dextran ester is presented which can be softened under an induced alternating magnetic field and may allow in that way a magnetically controlled release application. This could be a suitable alternative for swellable hydrogel composites embedded with magnetic particles as remote controlled...
Thin films of semiconducting and unsorted carbon nanotubes (CNT) are prepared on a transparent and flexible cyclic olefin polymeric substrate. The CNT biocompatibility is analyzed using L929 mouse fibroblasts and Human Umbilical Vein Endothelial Cells (HUVEC). Highly conductive poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films are also tested on the same substrate as an alternative...
In recent years, several studies have demonstrated the strong cytotoxicity toward bacteria of graphene-based materials, suggesting their use as antimicrobial agents. The objective of this study was to evaluate the antibacterial activity against Streptococcus mutans, the principal microbiological agent in the etiology of dental caries, of two types of graphene nanoplatelets (GNPs), characterized by...
In this work we describe a design of multifunctional complexes based on magnetic nanoparticles and anti-cancer mini-antibodies of scFv format that selectively recognize oncomarker HER2/neu on the surface of human breast adenocarcinoma cells. ScFv, having small size and being fully genetically encoded, offer significant advantages over full size antibody for targeted delivery of nanoparticles both...
This paper reviews some essential aspects of the filamentary bipolar resistive switching concept, and how appropriate material design and technology development makes it possible to translate it into a very attractive memory device, opening pathways for future memory replacements on condition specific key roadblocks are overcome.
Raman spectroscopy is a powerful tool to unambiguously identify chemical compounds by their unique vibrational “finger-print”. The Raman cross-section of a single molecule, however, is extremely small and intense laser sources, long integration times and high concentrations of analytes are typical prerequisites for Raman spectroscopy. A common route to alleviate these drawbacks is the use of surface...
Nonlinear optics at nanoscale is an intriguing research field of great significance from both fundamental and applicative point of view. In this paper, the phenomena of stimulated Raman scattering in both nanostructured silica based materials and nanostructured silicon based materials are investigated and discussed.
Maxwell-Garnett effective medium theory (MG-EMT) has been employed to model disk shaped nanoporous gold nanoparticles (NPG nanoparticles or NPG Disks). Optical properties of these nanoparticles have been calculated using the proposed model via Finite Difference Time Domain (FDTD) method. Calculated optical properties reflect strong dependence on particle dimensions. The resonant extinction wavelength...
We investigated the use of the thermal shrinkage of SU-8 resist for applying strain into graphene grown by the chemical-vapor-deposition (CVD) method. We demonstrate that the shrinkage of resist deposited on top of graphene on a substrate induces a local tensile strain within a distance of 1–2 µm from the edge of the resist. The thermal shrinkage of SU-8 allows us to design the local strain in graphene...
The mechanical properties of stacked graphene sheets with varying number of layers are examined. The stacked sheets are assembled by manually combining single layer CVD-grown graphene monolayers, resulting in a turbostratic multilayer graphene with irregular layer spacing greater than crystalline graphite. Due to the presence of multiple layers, the material is analyzed as a plate rather than a membrane...
We present the use of covalently functionalized carbon nanostructures (CNSs) such as single-wall carbon nanotubes (SWCNTs) and graphene nanoplatelets (GNPs), as conductive nanofillers in a P3HT matrix. We propose a simple approach for the preparation of the active blends used as hole transport layer (HTL) in mesoporous perovskite solar cells (PSCs). We demonstrate that for both SWCNT and GNP nanofillers,...
Wireless Nano-scale Sensor Networks (WNSNs) are very simple and energy restricted networks that operate over terahertz band ranging from 0.1–10 THz, which faces significant molecular absorption noise and attenuation. Given these challenges, reliability, energy efficiency, and simplicity constitute the main criteria in designing communication protocols for WNSNs. Due to its simplicity and energy efficiency,...
A cross-coupled differential VCO with low phase noise variation is presented. The VCO core adopts a metal-oxide-metal (MOM) digital switching capacitor array (DSCA), which is connected in series and in parallel to the nMOS varactor in order to reduce the KVCO variation. For further gain linearity, wider tuning range and minor phase noise variations, this varactor bank is connected in parallel to three...
Vacuum electron devices are the most promising solution to generate power at Watt level at millimeter waves and terahertz frequencies. The three dimensional nature of metal structures required to provide an effective interaction between an electron beam and THz signal poses relevant fabrication challenges. At the increase of the frequency, losses are a relevant detrimental effect on performance. In...
In this paper, we report the high-performance plasmonic terahertz (THz) detector based on antenna-coupled asymmetric nano-CMOS structure. For maximizing performance enhancement by nano-CMOS technology, asymmetric MOSFET is newly designed on a self-aligned gate structure and vertically-integrated patch antenna in 65-nm CMOS technology. Finally, we obtained the highly enhanced detection performance...
Advances in nanotechnology is paving the way for wireless nanoscale sensor networks (WNSNs), promising radically new applications in medical, biological, and chemical fields. The small nanomaterial-based antennas communicate in the terahertz band, which coincide with the natural resonance frequencies of many molecule species causing severe molecular absorption and noise. The problem is particularly...
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