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At the microscopic level, printing on a substrate exhibits imperfections that can be used as a unique identifier for labels, documents and other printed items.
Microcontact printing alkanethiols from an inked, microstructured stamp onto Au or Cu results in the formation of a self-assembled monolayer, which can locally protect the substrate from wet etching.
In particular, inkjet printing is an effective way to produce fine, thin, conductive structures without touching the substrate material.
The printing is fast (10 s transfer to substrate) and can be done at ambient conditions.
By exploiting the ability of printing to cheaply allow for the integration of diverse functionalities and materials onto the same substrate, therefore, it is possible to realize printed systems that exploit the advantages of printing while working around the disadvantages of the same.

Related Questions

Why antioxidant activity highest in medium substrate concentration instead the highest substrate concentration?5 answersThe antioxidant activity is highest in medium substrate concentration rather than the highest substrate concentration due to various factors. Enzymatic hydrolysis studies show that a higher enzyme to substrate ratio can reduce the antioxidant activity of hydrolysates, impacting their health benefits. Additionally, the antioxidant activity of nutrient media during bacterial cultivation varies, with P. aeruginosa showing greater antioxidant activity compared to E. coli, indicating different abilities to counteract free radical formation. Furthermore, the yield and antioxidative activity of exopolysaccharides are influenced by medium composition, where specific components like sucrose, peptone, and KH2PO4 have significant effects on antioxidant capacity. These findings collectively suggest that optimal conditions, rather than maximal substrate concentration, play a crucial role in enhancing antioxidant activity in various biological and food-related contexts.
What are stretchable substrates?4 answersStretchable substrates are essential components in the development of next-generation smart devices. These substrates are designed to enhance the stretchability and reliability of systems by allowing large deformations without failure. Various strategies have been explored, such as combining rigid and soft regions in a single layer to enable biaxial stretching while protecting embedded components. Materials like butyl rubber combined with ferroelectric fillers have been investigated to create printable stretchable substrates with tunable dielectric properties. Additionally, stretchable substrates can feature concave parts with non-stretchable patterns and adhesive layers, contributing to their overall flexibility and functionality. Poly(dimethylsiloxane) (PDMS) is a commonly used substrate material due to its stable chemical properties, good thermal stability, and self-healing capabilities, making it ideal for stretchable electronics applications.
How does the type of substrate affect the growth and fermentation process of yeast cultures?5 answersThe type of substrate significantly influences the growth and fermentation process of yeast cultures. Different substrates like glucose, glycerol, lignocellulosic hydrolysates, and pineapple waste impact yeast performance differently. For instance, yeast cultures on 2% glucose exhibited larger cell sizes compared to those on glycerol. Saccharomyces cerevisiae displayed an adaptive response when cultivated in spruce hydrolysate, enhancing fermentation performance. Variations in yeast cell wall composition due to different production processes affected fermentation rates and gas production. In microbial fuel cells, yeast showed higher power density when consuming yeast extract-peptone-d-glucose medium compared to other substrates. Utilizing pineapple waste as a substrate for yeast production was proposed due to its mineral content supporting fermentation processes. These findings highlight the crucial role of substrate type in shaping yeast growth and fermentation outcomes.
How does substrate affect the growth of plants?5 answersSubstrate composition has a significant impact on plant growth. Different substrates, such as maifanite, vermiculite, ceramsite, and volcanic rock gravels, can promote the growth of aquatic plants and improve the rhizosphere microbial community structure. Salinity of soil and water, caused by excessive salts like Na and Clˉ, can induce salt stress in plants, leading to growth inhibition and morphological changes. The addition of water-retaining agents and fertilizers in substrate material can affect nutrient losses, water absorption, and relative water content of leaves, ultimately influencing plant growth. The proportion of substrate materials, such as peat moss, vermiculite, and perlite, and the size of the container can also impact the growth of apple rootstock plants, with certain compositions and larger container volumes resulting in higher growth parameters. Substrate volume can act as a non-nutritional information source for plants, allowing them to proactively modulate their growth in response to resource availability and neighboring plants.
How to layout a substrate?5 answersA substrate can be laid out by following certain methods. One method involves arranging the first and second substrates alternately front-to-front and back-to-back, with each substrate curved in different radial directions to improve uniformity in the up-down direction of the distance between them. Another method includes using a flexible circuit board with curved sections to increase bond strength between the circuit and the flexible substrate. Additionally, a layout structure of a package substrate can be designed in a non-linear manner using a frame body made of metal blocks and insulating material to enhance strength and rigidity. Patterning a substrate can be achieved by forming mandrels on a target layer and depositing fill material between sidewall spacers, followed by a chemical-mechanical polishing step. Finally, a schematic route connecting two parts on a substrate can be generated and checked for interference to determine the number of arrangeable wirings.
What printing method is used for printing on odd sizes shapes and a variety of substrate materials )?6 answers