Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications [PDF]
, 2017 A design is presented for an acoustically resonant cell, based on the excitation of azimuthal resonances, to enhance the sensitivity of multi-pass photoacoustic spectroscopy.
Bauer, Ralf +2 more
core +1 more source
QEPAS based ppb-level detection of CO and N2O using a high power CW DFB-QCL [PDF]
, 2013 An ultra-sensitive and selective quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor platform was demonstrated for detection of carbon monoxide (CO) and nitrous oxide (N2O). This sensor used a stateof- the art 4.61 μm high power, continuous wave
Bauer +32 more
core +1 more source
Enhanced photoacoustic spectroscopy sensitivity through intra-cavity OPO excitation [PDF]
, 2018 We report an optical molecular gas sensor exhibiting high levels of selectivity and sensitivity. The outstanding sensitivity demonstrated by our technology is rooted in a novel combination of photoacoustic spectroscopy (PAS) operated within the cavity of
Polak, Adam, Stothard, David J.M.
core +1 more source
Frontiers in Physics, 2022 A convenient method of light intensity correction for quartz-enhanced photoacoustic spectroscopy (QEPAS) using photothermal baseline is demonstrated. The laser beam passes through the prongs of the quartz tuning fork (QTF) and then focused on the root of
Xiang Chen +8 more
doaj +1 more source
Compact all-fiber quartz-enhanced photoacoustic spectroscopy sensor with a 30.72 kHz quartz tuning fork and spatially resolved trace gas detection [PDF]
, 2016 An ultra compact all-fiber quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor using quartz tuning fork (QTF) with a low resonance frequency of 30.72 kHz was demonstrated.
He, Ying +5 more
core +1 more source
Single-tube on-beam quartz-enhanced photoacoustic spectroscopy
Optics Letters, 2016 Quartz-enhanced photoacoustic spectroscopy (QEPAS) with a single-tube acoustic microresonator (AmR) inserted between the prongs of a custom quartz tuning fork (QTF) was developed, investigated, and optimized experimentally. Due to the high acoustic coupling efficiency between the AmR and the QTF, the single-tube on-beam QEPAS spectrophone configuration
Zheng, Huadan +11 more
openaire +5 more sources
Biodegradable Nitrogen-Doped Carbon Nanodots for Non-Invasive Photoacoustic Imaging and Photothermal Therapy [PDF]
, 2016 Multifunctional nanoparticles have been widely investigated for biomedical applications, such as imaging, therapy, and drug delivery. Especially, photoactive nanoparticles have received great attention as theranostic agents because of their heat ...
Beack, S +8 more
core +3 more sources
CleAir monitoring system for particulate matter. A case in the Napoleonic Museum in Rome [PDF]
, 2017 Monitoring the air particulate concentration both outdoors and indoors is becoming a more relevant issue in the past few decades. An innovative, fully automatic, monitoring system called CleAir is presented.
Bonacquisti, V. +5 more
core +1 more source
Thermally Gated Dual‐Cascade Nanozyme for Enhanced Mild‐Temperature Photothermal Therapy
Advanced Science, EarlyView.A thermo‐responsive cascade nanozyme (Ru‐GOx‐PNN) synergistically enhances mild photothermal therapy by dual suppression of HSP70 through ROS‐induced lipid peroxidation and ATP depletion. This intelligent system effectively overcomes thermotolerance and amplifies apoptosis, offering a safe and precise strategy for tumor treatment.
Shuyu Wang +7 more
wiley +1 more source
MEMS-Based Terahertz Photoacoustic Chemical Sensing System [PDF]
, 2016 Advancements in microelectromechanical system (MEMS) technology over the last several decades has been a driving force behind miniaturizing and improving sensor designs.
Coutu, Ronald A., Jr. +3 more
core +1 more source