Results 41 to 50 of about 234,784 (289)

Automated particle analysis by Raman microscopy – a method development

open access: yesCurrent Directions in Biomedical Engineering, 2018
Chemical identification of particles increasingly gains importance concerning regulatory affairs of medical devices. Particle numbers of samples very easily add up to orders larger than 1.000.
Reske Thomas   +5 more
doaj   +1 more source

Fiber-integrated frequency-doubling of a picosecond Raman laser to 560 nm [PDF]

open access: yes, 2015
We report the development of a fiber-integrated picosecond source at 560 nm by second harmonic generation of a Raman fiber laser. A picosecond ytterbium master oscillator power fiber amplifier is used to pulse-pump a Raman amplifier, which is seeded by a
kelleher, EJR   +5 more
core   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Accumulation of Spherical Microplastics in Earthworms Tissues-Mapping Using Raman Microscopy

open access: yesApplied Sciences
The presence of microplastics in the environment is now becoming a challenge for many scientific disciplines. Molecular diversity and spatial migration make it difficult to find plastic-free areas.
Marek Klimasz, Anna Grobelak
doaj   +1 more source

Antenna-enhanced Optoelectronic Probing of Carbon Nanotubes

open access: yes, 2016
We report on the first antenna-enhanced optoelectronic microscopy studies on nanoscale devices. By coupling the emission and excitation to a scanning optical antenna, we are able to locally enhance the electroluminescence and photocurrent along a carbon ...
Hartmann, Nicolai   +5 more
core   +2 more sources

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Stimulated Raman Scattering Microscopy: A Review

open access: yesPhotonics
Stimulated Raman scattering (SRS) microscopy is a high-speed imaging modality based on intrinsic molecular vibrations, producing chemical maps in living systems.
Rajeev Ranjan, Luigi Sirleto
doaj   +1 more source

Frustration of crystallisation by a liquid–crystal phase [PDF]

open access: yes, 2017
Frustration of crystallisation by locally favoured structures is critically important in linking the phenomena of supercooling, glass formation, and liquid-liquid transitions.
González-Jiménez, Mario   +5 more
core   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera   +8 more
wiley   +1 more source

Raman Spectroscopy and Related Techniques in Biomedicine

open access: yesSensors, 2010
In this review we describe label-free optical spectroscopy techniques which are able to non-invasively measure the (bio)chemistry in biological systems. Raman spectroscopy uses visible or near-infrared light to measure a spectrum of vibrational bonds in ...
Alistair Elfick, Andrew Downes
doaj   +1 more source

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