A new reactive ink based on a silver citrate complex is proposed for a photochemical route to surface-enhanced Raman spectroscopy active substrates with controllable extinction spectra. The drop-cast test of the ink reveals homogeneous nucleation of silver and colloid particle growth originating directly from photochemical in situ reduction in droplets, while the following evaporation of the de...

New methods for materials fabrication at the microand nanoscale will drive scientific and technological advances in areas of materials science, chemistry, physics, and biology. The broad diversity of potentially relevant materials, length scales, and architectures underscores the need for flexible patterning approaches. One important example is the fabrication of 3D periodic structures comprise...

In recent years, painterly rendering techniques have achieved remarkable success for simulating water color, oil and oriental ink paintings. Many artistic filters, such as [DeCarlo and Santella 2002; Collomosse and Hall 2006] have been proposed for converting real photos into painting style by applying the global operation with minimum user interaction. Although artistic filters are particularl...

We propose an extension of the cellular Yule-Nielsen spectral Neugebauer model accounting for ink spreading of each ink within each subdomain. Characterization of the ink spreading within a given subdomain is performed by fitting the mid-range weights of subdomain node reflectances with the goal of minimizing the sum of square differences between predicted and measured mid-range reflectances. W...

We report carbon nanotube thin film-based supercapacitors fabricated with printing methods, where electrodes and separators are integrated into single sheets of commercial paper. Carbon nanotube films are easily printed with Meyer rod coating or ink-jet printing onto a paper substrate due to the excellent ink absorption of paper. A specific capacity of 33 F/g at a high specific power of 250 000...

In this work we address the problem of how pen-based interfaces for mathematical software systems can be organized. We describe our approach to such interfaces for mathematical packages and document processing software. Our architecture includes components for ink collection, mathematically-oriented recognizers, portability support and interfaces to applications. We summarize aspects of mathema...

“ b h o f t M d c 0 o t t p t d t d bstract. The Yule–Nielsen modified spectral Neugebauer model YNSN) enhanced for accounting for ink spreading in the different nk superposition conditions requires a spectrophotometer to meaure the reflectances of halftone calibration patches in order to comute the ink spreading curves mapping nominal ink surface coverge to effective ink surface coverage. Inst...

Tattooing has long been practised in various societies all around the world and is becoming increasingly common and widespread in the West. Tattoo ink suspensions unquestionably contain pigments composed of nanoparticles, i.e., particles of sub-100 nm dimensions. It is widely acknowledged that nanoparticles have higher levels of chemical activity than their larger particle equivalents. However,...

Annotations on digital documents have clear advantages over annotations on paper. They can be archived, shared, searched, and easily manipulated. Freeform digital ink annotations add the flexibility and natural expressiveness of pen and paper, but sacrifice some of the structure inherent to annotations created with mouse and keyboard. For instance, current ink annotation systems do not anchor t...

Additive manufacture techniques using concentrated colloidal inks are a promising approach for creating three-dimensional (3D) calcium phosphates scaffolds for bone repair and regeneration. Among those, the direct-write assembly allows building scaffolds with precise size and geometry. In the present work, commercial β-TCP and HA were used to produce two types of colloidal ink. According to the...