Related Experiment Video
Updated: Jan 24, 2026
10:27
Lab-on-a-CD Platform for Generating Multicellular Three-dimensional Spheroids
Published on: November 7, 2019
6.8K
Three-Dimensional Microtubular Devices for Lab-on-a-Chip Sensing Applications
Jiawei Wang1,2,3, Daniil Karnaushenko1, Mariana Medina-Sánchez1
1Institute for Integrative Nanosciences , IFW Dresden , 01069 Dresden , Germany.
ACS Sensors
|May 28, 2019
Summary
Microtubular sensors leverage advanced microfabrication for miniaturized devices. These 3D structures offer unique advantages for detecting diverse targets, paving the way for lab-on-a-chip systems.
Area of Science:
- Microfabrication and Nanotechnology
- Materials Science
- Sensor Technology
Background:
- Micro-/nanofabrication advances enable novel miniaturized sensing devices.
- Microtubular geometry offers advantages like hollow channels and high surface-volume ratios for sensing.
- These structures are compatible with on-chip integration.
Purpose of the Study:
- To review state-of-the-art sensing techniques utilizing microtubular devices.
- To highlight the diverse applications and principles of microtubular sensors.
- To discuss future research directions for enhanced functionality and integration.
Main Methods:
- Review of existing literature on microtubular sensors.
- Categorization of sensors by fabrication method (microcapillaries, rolled-up nanomembranes, synthesized arrays, 3D printed structures).
- Analysis of sensing principles (optical, electrical, magnetic).
Main Results:
- Microtubular sensors demonstrate broad sensing capabilities for liquids, biomolecules, nanoparticles, and gases.
- Applications include detection of mechanical, acoustic, and magnetic fields, and fluorescence signals.
- Various fabrication methods yield microtubular structures suitable for diverse sensing tasks.
Conclusions:
- Microtubular sensors represent a promising platform for sensitive and specific detection.
- Future research should focus on improving detection limits and expanding functionality.
- Integration into lab-on-a-chip systems is a key goal for diagnostics and biological event analysis.
Related Concept Videos
02:57The Sense of Self: Reflected Self-Appraisal and Social Comparison
55.6K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
55.6K
01:16Flame Photometry: Lab
901
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
901
01:26Introduction to Special Senses
7.3K
Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
7.3K
01:27Tactile and Chemical Senses
737
Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
737
01:29Atomic Emission Spectroscopy: Lab
597
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
597
01:21Atomic Absorption Spectroscopy: Lab
1.0K
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
1.0K