scispace - formally typeset
Search or ask a question

What gives the agarose gel a maze like structure? 


Best insight from top research papers

The maze-like structure of agarose gel is attributed to the formation of a fibrous network composed of aggregated double helices of agarose. This network exhibits conformational variations depending on the agarose concentration, with fiber diameters generally increasing as concentrations rise. Additionally, at lower agarose concentrations, the network displays protuberances or cul-de-sacs, contributing to the intricate maze-like appearance of the gel. The distribution of void volumes within agarose gels, as revealed by small angle neutron scattering (SANS), aligns with a random network of cylindrical fibers described by the Ogston model. These structural characteristics, along with the impact of agarose concentration and conformation on pore size and distribution, collectively contribute to the maze-like spatial arrangement observed in agarose gels.

Answers from top 5 papers

More filters
Papers (5)Insight
The agarose gel's maze-like structure is attributed to a random network of cylindrical fibers, as revealed by small angle neutron scattering (SANS) measurements in the study.
The aggregated double helices of agarose form a fibrous network, creating a maze-like structure in agarose gels, with fiber diameters increasing at higher concentrations and cul-de-sacs appearing at lower concentrations.
The maze-like structure of agarose gel is formed by the pores, whose diameter and distribution are influenced by both the agarose concentration and the ionic strength of the solvent.
The agarose gel obtains a maze-like structure due to the formation of fractal aggregates with dimensions near 3, leading to spatial ordering and depletion zones during gelation.
The agarose gel's maze-like structure is created by non-destructive microneedle photothermal microfabrication, allowing for stepwise formation of microchannels to guide neurites during neuronal network cultivation.

Related Questions

Why does one add gel loading buffer to the RNA Samples?4 answersGel loading buffer is added to RNA samples for various reasons. Firstly, it helps in visualizing and loading the RNA samples onto the gel for electrophoresis, which is crucial for quality assessment of RNA preparations for downstream analyses like microarrays and real-time PCRs. Additionally, the use of gel loading buffer aids in improving electrophoresis resolution, image sharpness, and overall efficiency of the process. Moreover, gel loading buffer can contribute to the efficient stacking of RNA sequencing fragments during ultrathin slab gel electrophoresis-based automated DNA sequence analysis, enhancing the separation process. Overall, the addition of gel loading buffer is essential for proper visualization, loading, and efficient separation of RNA samples during electrophoresis, ensuring accurate analysis and downstream applications.
What is the principle behind DNA migration in agarose gel electrophoresis?5 answersIn agarose gel electrophoresis, DNA migration is based on the principle that DNA fragments move through the agarose gel matrix towards the positively charged anode when an electric field is applied. This movement is determined by the size of the DNA molecules, with smaller fragments migrating faster than larger ones due to their lower mass. The agarose gel acts as a sieve, separating DNA based on size as smaller molecules can navigate through the gel matrix more swiftly. The migration rate is influenced by factors such as DNA size, agarose concentration, DNA conformation, applied voltage, presence of ethidium bromide, type of agarose, and electrophoresis buffer. The leading model for DNA movement in agarose gel electrophoresis is "biased reptation," where the leading edge propels the molecule forward, aiding in separation.
How is agarose gel prepared?4 answersAgarose gel is prepared using various methods. One method involves heating and dissolving agar in a solution, adding a flocculant such as polyaluminium chloride and polyacrylamide to remove impurities, filtering the solution, and cooling it to form a gel. Another method involves activating agarose solid with a crosslinking agent, reacting it with sulfuric anhydride, and preparing it into agarose gel microspheres. Additionally, agarose gel can be prepared by injecting an agarose solution between two pieces of glass and then injecting a polyacrylamide gel raw material into the cavity formed by the glass. These methods result in agarose gels with different properties and applications, such as high-quality agarose for molecular biology, agarose gel for injection in medical cosmetology, and agarose gel microspheres for separating and purifying biological components.
Why did the agarose gel not work for DNA extraction?5 answersThe agarose gel did not work for DNA extraction because the modified starch gel made from corn starch did not produce visible bands when visualized under blue and ultraviolet light. The DNA sample and ladder migrated successfully through the modified starch gel, but no bands were visible, indicating that the DNA was not effectively separated and visualized. Agarose gel electrophoresis is the most efficient method for isolating DNA fragments, but extraction of DNA nanostructures intact with high yield from the agarose matrix is problematic. Existing methods for DNA extraction from agarose gels rely on thermal, chemical, and/or mechanical destruction of the agarose gel, or electroelution of the DNA to a solid support, leading to problems of low yield, damage to structures, and/or contamination with residual agarose.
What is cake or gel formation?4 answersCake or gel formation refers to the process of creating a solid or semi-solid structure from a liquid or gel-like substance. This can occur in various contexts, such as in the formation of memory structures, the study of caking problems in industries, the use of gels in food products, or the modeling of water leakoff from gels during hydraulic fracturing. In the context of memory formation, a cake-structured 3D NOR type memory is created using a specific method involving doping, deposition of layers, etching, and setting gate electrodes. In the study of caking problems, standardized procedures are offered to measure critical factors and provide solutions for industries dealing with caking, such as soap, detergents, and pharmaceuticals. Gel structures formed from saturated distilled monoglycerides are applied in sponge cakes, affecting batter viscosity, aeration, and crumb softness. In the modeling of water leakoff from gels during hydraulic fracturing, a new model is developed to accurately predict leakoff and gel dehydration behavior. Additionally, a theory of drop-wise addition polymerization is developed, which includes a new distribution function for cyclic species and a gel point formula.
How to make a neuron model out of candy?8 answers

See what other people are reading

Why decrease in overall drying time with increase in temperature in GRAIN?
5 answers
The decrease in overall drying time with an increase in temperature in grains can be attributed to the enhanced drying kinetics at higher temperatures. Studies on soybean grainsand brewers’ spent grainshave shown that higher drying temperatures lead to faster moisture removal, reducing the drying time significantly. Additionally, research on paddy grainsand short-grain rough ricedemonstrated that elevated temperatures expedite the drying process by increasing the moisture diffusivity and decreasing the moisture content of the grains. This phenomenon is further supported by the observation that drying at higher temperatures affects the physical properties of grains, causing them to lose water more rapidly. Therefore, the relationship between temperature and drying time in grains is crucial for optimizing drying processes and preserving grain quality.
What is water diffusion coefficient in fruits and vegetables?
5 answers
Water diffusion coefficients in fruits and vegetables play a crucial role in processes like dehydration and osmotic dehydration. Studies have shown that the diffusion coefficients are influenced by factors such as pressure, osmotic solutions used, and the characteristics of the food material. Effective diffusivity is a key parameter in analyzing heat and mass transfer during food drying, with moisture-dependent effective diffusivity (MDED) being more accurate in predicting drying kinetics compared to temperature-dependent effective diffusivity (TDED). The diffusion coefficients are affected by various factors like temperature, pH, titratable acids, and soluble solids levels. Overall, understanding water diffusion coefficients is essential for modeling technological processes, designing innovative products, and optimizing food drying processes in fruits and vegetables.
What is the method of Establishing a uniform flow in channel?
4 answers
To establish a uniform flow in a channel, various methods have been proposed in different engineering applications. One approach involves modifying the angle of water entry into lateral pipes to ensure uniform flow distribution. Another method includes designing comb-like networks with variable diameters and spacings along the branches to achieve flow uniformity. Additionally, the method of Kazemipour, later modified by Goldfarb and Cabral da Silva, facilitates the calculation of uniform flow in channels by adapting the friction factor based on experimental studies. Furthermore, in the semiconductor industry, a method is described to form channels in sub-5 nm node FinFETs, utilizing a v-shaped buffer layer to ensure a uniform distribution of indium and gallium throughout the channel. These methods collectively contribute to establishing and maintaining uniform flow in various channel systems.
What are the common types of welded imperfections in steel constructions?
5 answers
Common types of welded imperfections in steel constructions include defects arising from various dimensions of imperfections. Point defects, one-dimensional defects like dislocations, and volumetric defects such as second-phase inclusions are prevalent in materials due to entropy considerations, stress-induced structural constraints, and processing issues. Additionally, dislocation pile-ups can occur in crystals when dislocations encounter obstacles they cannot overcome, leading to structural distortions. Furthermore, small angle scattering studies have shown examples of structural diffuse scattering related to precipitation in alloys, fracture behavior, and radiation damage in materials like silicon and gallium arsenide, highlighting imperfections that can affect the mechanical and physical properties of welded steel constructions. These imperfections can impact the mechanical properties and overall performance of steel structures, emphasizing the importance of understanding and mitigating such defects during welding processes.
What is the purpose of Thermal gravimetric analysis (TGA) for bacterial cellulose film?
5 answers
Thermal gravimetric analysis (TGA) for bacterial cellulose films serves the purpose of evaluating the thermal stability and composition-related details of the material. TGA helps in quantifying weight changes due to temperature or time, analyzing phenomena like degradation, mass loss, and presence of fillers. It aids in understanding the effects of moisture, solvents, and additives on the film's properties, such as mechanical strength and thermal conductivity. Studies have shown that TGA can determine the optimal purification methods and processing parameters to enhance the structural and physical properties of bacterial cellulose films, making them suitable for various applications. TGA is a valuable tool in characterizing the thermal behavior and composition of bacterial cellulose films, guiding the development of improved materials with enhanced performance.
What is Compliencein a topology optimisation?
5 answers
Compliance in topology optimization refers to the adherence of the optimized design to code requirements and safety standards. The use of Topology Optimization (TO) in civil engineering, particularly in steel construction, faces challenges due to the need for compliance with industry codes and the complexity of real-world connections. Linear elastic TO methods may not always meet safety needs, necessitating validation through Non-Linear Finite Element Analyses (NLFEA) to ensure structural integrity. Compliance with design codes is crucial for ensuring the structural stability and safety of optimized designs, especially in complex and heterogeneous connections. By addressing compliance issues and validating designs through NLFEA, TO can lead to significant volume and cost reductions in steel construction, contributing to decarbonization goals.
What is the antioxidant content of different drying methods (frozen, convective air-dried, freeze-dried, and swell-dried) in chokecherries?
5 answers
The antioxidant content of chokecherries varied depending on the drying method used. Freeze-drying showed effectiveness in preserving antioxidant compounds and phytochemicals in Costus speciosus, Coccinia grandis, and Gymnema sylvestre leaves. Convective drying at 60°C was found to be a suitable alternative for preserving antioxidant capacity in xoconostle by-products. Oven drying at 40°C and chilling at 4°C affected the antioxidant and anti-inflammatory properties of bee pollen extracts from stingless bees. Retention of antioxidants in fruits and vegetables during drying operations is crucial, with freeze drying, vacuum drying, and dehumidified drying being beneficial compared to conventional hot air drying. Therefore, the choice of drying method significantly impacts the antioxidant content of chokecherries, with freeze-drying and convective drying showing promising results in preserving antioxidants.
What is the thermal conductivity of mono and diglycerides?
5 answers
The thermal conductivity of mono- and diglycerides can be estimated using a novel chemical constituent fragment approach based on fragment composition and specific parameters obtained from experimental data regression. Additionally, thermal treatment can impact the content of glycidyl fatty acid esters in mono- and mono-di-glycerides, with temperature playing a crucial role in reducing these esters. Furthermore, a study on saturated fatty acids esterified with glycerol revealed insights into their thermal degradation behavior, providing information on activation energy of decomposition. While the thermal conductivity of liquid argon was calculated using correlation function theory, showing agreement with experimental data, this specific calculation was not directly related to mono- and diglycerides.
Are there any examples of producing gels with swelling selection?
5 answers
Various studies have explored the production of gels with swelling selection. Byun et al. demonstrated the swelling-driven deformation of gel sheets with spatial designs, showcasing how film thickness and pattern dimensions influence the deformation. Cohen et al. proposed an energy-based framework to understand gel equilibrium responses, highlighting how microstructural design can control the swelling process. Althans and Enders investigated the influence of acids and bases on the swelling behavior of poly(N-isopropylacrylamide) hydrogels, showing that properties vary based on the type and concentration of acids or bases used. Drozdov and Christiansen developed a model for copolymer gels' equilibrium swelling under different pH and salt concentrations, emphasizing the need for fine-tuning VPTT for controlled drug delivery applications. Seii et al. observed the temporary swelling suppression in gels by adding linear PEG in the surrounding water, indicating a stronger effect than conventional osmotic pressure.
How do i model two viscous emulsion diffusion in time ?
5 answers
To model the diffusion of two viscous emulsions over time, various approaches can be considered. One method involves utilizing a dynamic structure factor approach to determine the gradient diffusivity in the emulsion system. Additionally, the Diffusion-limited Aggregation (DLA) model can effectively simulate viscous fingering effects in a single-phase simulation without the need for a high-resolution grid, providing a semi-physical and easy-to-implement solution with minimal computational overhead. Furthermore, understanding the fundamental diffusion model for viscous development caused by viscous materials can aid in predicting the developed image from exposure distribution, allowing for accurate quantitative sensitometry in applications involving viscous-developed film. By combining insights from these studies, a comprehensive model for the diffusion of two viscous emulsions over time can be developed.
What is the exciton diffusion coefficient in 2H MoTe2?
5 answers
The exciton diffusion coefficient in 2H MoTe2 has been extensively studied in related materials like MoSe2. Research on MoSe2 encapsulated in hBN flakes revealed a significant increase in exciton diffusion coefficients in the strong-coupling regime, with values predicted to rise by two to three orders of magnitude due to enhanced polariton group velocity and reduced polariton-phonon scattering channels. Additionally, investigations on MoSe2 encapsulated by hBN flakes demonstrated that exciton mobility increases at lower temperatures, reaching over 104 cm2V−1s−1 at 10 K. Furthermore, studies on monolayer MoSe2 and bulk MoSe2 samples indicated exciton diffusion coefficients of 12 ± 3 cm2 s−1 and 19 ± 2 cm2 s−1, respectively, providing valuable insights into exciton dynamics in these structures.