ArticlePloS one2015
Smart-Phone Based Magnetic Levitation for Measuring Densities.
Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
18 citing papers in PubMed, 53 citations in OpenAlex.
- Exploring the limits of magnetic levitation: submicron particle separation and density profiling.Materials research express · 2025Article
- Three Dimensional Printing and Its Applications Focusing on Microneedles for Drug Delivery.Pharmaceutics · 2023Review
- Deep Learning-Enabled Technologies for Bioimage Analysis.Micromachines · 2022Review
- Multiparametric biophysical profiling of red blood cells in malaria infection.Communications biology · 2021Article
- Hemp-Based Microfluidics.Micromachines · 2021Article
- 3D-printed microneedles in biomedical applications.iScience · 2021Review
- Increasing the packing density of assays in paper-based microfluidic devices.Biomicrofluidics · 2021Review
- Machine learning-enabled multiplexed microfluidic sensors.Biomicrofluidics · 2020Review
- Pushing the Limits of Spatial Assay Resolution for Paper-Based Microfluidics Using Low-Cost and High-Throughput Pen Plotter Approach.Micromachines · 2020Article
- A Novel Implementation of Magnetic Levitation to Quantify Leukocyte Size, Morphology, and Magnetic Properties to Identify Patients With Sepsis.Shock (Augusta, Ga.) · 2019Article
- Assessing the Reusability of 3D-Printed Photopolymer Microfluidic Chips for Urine Processing.Micromachines · 2018Article
- 3D printing for drug manufacturing: A perspective on the future of pharmaceuticals.International journal of bioprinting · 2018Article
- Detection of membrane-bound and soluble antigens by magnetic levitation.Lab on a chip · 2017Article
- Biocompatible and label-free separation of cancer cells from cell culture lines from white blood cells in ferrofluids.Lab on a chip · 2017Article
- Magnetic Levitation Coupled with Portable Imaging and Analysis for Disease Diagnostics.Journal of visualized experiments : JoVE · 2017Article
- Magnetofluidic concentration and separation of non-magnetic particles using two magnet arrays.Biomicrofluidics · 2016Article
- Label-Free Microfluidic Manipulation of Particles and Cells in Magnetic Liquids.Advanced functional materials · 2016Article
- Sickle cell detection using a smartphone.Scientific reports · 2015Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
Magnetic levitation, which uses a magnetic field to suspend objects in a fluid, is a powerful and versatile technology. We develop a compact magnetic levitation platform compatible with a smart-phone to separate micro-objects and estimate the density of the sample based on its levitation height. A 3D printed attachment is mechanically installed over the existing camera unit of a smart-phone. Micro-objects, which may be either spherical or irregular in shape, are suspended in a paramagnetic medium and loaded in a microcapillary tube which is then inserted between two permanent magnets. The micro-objects are levitated and confined in the microcapillary at an equilibrium height dependent on their volumetric mass densities (causing a buoyancy force toward the edge of the microcapillary) and magnetic susceptibilities (causing a magnetic force toward the center of the microcapillary) relative to the suspending medium. The smart-phone camera captures magnified images of the levitating micro-objects through an additional lens positioned between the sample and the camera lens cover. A custom-developed Android application then analyzes these images to determine the levitation height and estimate the density. Using this platform, we were able to separate microspheres with varying densities and calibrate their levitation heights to known densities to develop a technique for precise and accurate density estimation. We have also characterized the magnetic field, the optical imaging capabilities, and the thermal state over time of this platform.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.