Resonant Galvanometric Mirror
Resonant Galvanometric Mirror - Related Videos
06:22
Motor Learning in Mirror Drawing
0 Views •
2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Colloquially, the terms learning and memory encompass a broad range of behaviors and mental systems, everything from learning to tie a shoe to mastering calculus (and a lot in between). Experimental psychologists have divided up learning mechanisms into groups that seem to have different properties, and that seem to rely on different brain systems. A major division is between declarative and non-declarative memory, roughly, the...
10:32
Robotic Mirror Therapy System for Functional Recovery of Hemiplegic Arms
0 Views •
Cited by 26 •
2016
We developed a real-time mirror robot system for functional recovery of hemiplegic arms using automatic control technology, conducted a clinical study on healthy subjects, and determined tasks through feedback from rehabilitation doctors. This simple mirror robot can be applied effectively to occupational therapy in stroke patients with a hemiplegic arm.
03:18
Aggression Assay: A Method to Study Aggressive Behavior of Zebrafish in Response to a Mirror
0 Views •
2023
The article describes an assay for studying zebrafish’s aggression. The method uses a simple mirror and observes zebrafish’s behavioral response towards its own reflection in mirror.
02:52
Resonance
0 Views •
2020
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds. If nitrite ions do indeed contain a single and a double bond, the two bond lengths are expected to be different. A double bond between two atoms is shorter (and stronger) than a single bond between the same two atoms. However, experiments show that both N–O bonds in NO2− have the same strength and length, and are identical in all other...
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
0 Views •
Cited by 35 •
2013
The customized techniques developed in our lab to build microwave photonics systems based on ultra-high Q whispering gallery mode resonators are presented. The protocols to obtain and characterize these resonators are detailed, and an explanation of some of their applications in microwave photonics is given.
FAQs
Resonance allows the mirror to oscillate at a defined frequency with rapid motion and relatively efficient energy use. When the drive signal matches the system’s resonant behavior, the mirror repeatedly sweeps through its intended angular range. This combination of speed and controlled oscillation makes the scanner useful when an imaging system must redirect light quickly and consistently.
An alternating electrical signal passes through the coil or actuator, producing motion through interaction with a magnetic field. That electromechanical response drives the mirror back and forth rather than holding it at a fixed angle. The signal therefore controls the oscillation that determines how the optical beam is redirected during scanning.
The resonant frequency establishes the rate at which the mirror oscillates and therefore the timing of repeated beam deflections. Operating at this defined frequency supports predictable scanning behavior, while the angular range determines how far the beam is steered. Together, frequency and angular motion influence the spatial and temporal coverage of an optical measurement.
Rapid, repeatable angular motion lets the optical system direct light across biological samples in a consistent pattern. This is valuable for resolving cells and tissues while observing processes that change over time. In bioengineering instruments, stable scanning behavior supports high-resolution visualization and helps produce measurements that can be compared across repeated observations.
The mirror is placed in the beam-steering path of an optical instrument, where its oscillation redirects the imaging or laser beam through the measurement field. The system supplies an alternating electrical drive and uses the resulting angular sweep for repeated scanning. This arrangement can be incorporated into confocal microscopy, optical coherence tomography, laser scanning microscopy, or photoacoustic imaging.
Applications include confocal microscopy, optical coherence tomography, laser scanning microscopy, and photoacoustic imaging. In these systems, the mirror’s fast, repeatable beam steering supports high-resolution visualization of cells, tissues, and dynamic biological processes. The relevant outcome is not merely beam movement, but controlled optical access to biological structures and changes that imaging methods are designed to capture.