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Phosphate Sink Containing Two-Component Signaling Systems as Tunable Threshold Devices
2014
PLoS Computational Biology
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These findings show that the one HK-two RR motif allows bacteria and yeast to implement tunable switch-like signal processing and provides an ideal basis for developing threshold devices for synthetic ...
We show that, under the experimentally observed parameters from bacteria and yeast, this motif not only allows rapid signal termination, whereby one of the RRs acts as a phosphate sink towards the other ...
devices using two-component signalling proteins. ...
doi:10.1371/journal.pcbi.1003890
pmid:25357192
pmcid:PMC4214558
fatcat:yix5zdt3brbx7ad63d6wbfka7y
Controlled release of dry reagents in porous media for tunable temporal and spatial distribution upon rehydration
2012
Lab on a Chip
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Third, reagents are reconstituted sequentially from dry storage depots with tunable delivery times. ...
Finally, the utility of these control methods is demonstrated in the context of real-time reagent rehydration and mixing on a porous device. ...
DGE -0718124, as well as NIH (EB000252). Additional funding was provided by the University of Washington Bioengineering Department. ...
doi:10.1039/c2lc40785j
pmid:22960691
pmcid:PMC3489279
fatcat:d3gb22souvgpjbgtgy5yrqnk7a
Laser amplifier development for IPDA Lidar measurements of CO2from space
2015
Solid State Lasers XXIV: Technology and Devices
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It uses two tunable pulsed laser transmitters allowing simultaneous measurement of a single CO 2 absorption line in the 1570 nm band, absorption of an O 2 line pair in the oxygen A-band (765 nm), and atmospheric ...
To meet the laser energy requirements we have pursued two parallel power-scaling approaches for the space laser. ...
ACKNOWLEDEMENT The authors would like to acknowledge the support from NASA Earth Science Technology Office (ESTO) under the Advanced Component Technology (ACT), Innovative Incubator Program (IIP) and the ...
doi:10.1117/12.2080792
fatcat:f4llbrmm45bdnmpa7c3fh2ivli
Chemical sensors based on quantum cascade lasers
2002
IEEE Journal of Quantum Electronics
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The recent availability of novel pulsed and CW quantum cascade distributed feedback (QC-DFB) lasers as mid-infrared spectroscopic sources address this need. ...
The sensor described in [29] used the same QC-DFB laser at m [28] as a spectroscopic source and a two-channel configuration with a 1-m optical pathlength inside a cell culture container. ...
Another issue is the limited tunability of each QC-DFB laser, which restricts the feasibility of multi-component chemical sensing. ...
doi:10.1109/jqe.2002.1005408
fatcat:k5h2lkv7bbhx7oeyfwk6roy5le
Chemical sensors based on quantum cascade lasers
2002
Diode Lasers and Applications in Atmospheric Sensing
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The recent availability of novel pulsed and CW quantum cascade distributed feedback (QC-DFB) lasers as mid-infrared spectroscopic sources address this need. ...
The sensor described in [29] used the same QC-DFB laser at m [28] as a spectroscopic source and a two-channel configuration with a 1-m optical pathlength inside a cell culture container. ...
Another issue is the limited tunability of each QC-DFB laser, which restricts the feasibility of multi-component chemical sensing. ...
doi:10.1117/12.452087
fatcat:lwyxriqpnzaldfruteh5pgeocu
An Overview on Quantum Cascade Lasers: Origins and Development
[chapter]
2017
Quantum Cascade Lasers
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Materials used, as well as growth methods, are also described. The possibility of developing GaN-based QCLs is also shown. ...
Summarizing, the applications of these structures cover a broad range, including spectroscopy, free-space communication, as well as applications to near-space radar and chemical/biological detection. ...
Hence, a QCL device might be priced below the market, which can have negative consequences that can reach the component supplier. ...
doi:10.5772/65003
fatcat:uyexish2jjg4zl7peg67w6xcq4
Spaceborne laser instruments for high-resolution mapping
2010
Solid State Lasers XIX: Technology and Devices
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Simulations of thermal performance of the disk and the heat sink are also included. ...
Edge-pumping [1] allows for reduced doping of crystals with laser ions, which translates to lower lasing threshold in quasi-3 level materials. ...
well as higher damage threshold than AGS. ...
doi:10.1117/12.843191
fatcat:6ouzsdkdknh63ordfsktdz3lqq
Optical Waveguides and Integrated Optical Devices for Medical Diagnosis, Health Monitoring and Light Therapies
2020
Sensors
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Thirdly, wearable optical sensing devices based on light sensing methods such as colorimetry, fluorescence and luminescence are discussed. ...
Optical waveguides and integrated optical devices are promising solutions for many applications, such as medical diagnosis, health monitoring and light therapies. ...
As the media between light and tissues, optical sensing modules in these devices function as indispensable components. ...
doi:10.3390/s20143981
pmid:32709072
fatcat:6plv2ikpx5cybllqnyyns2fzka
Laser Sources for Confocal Microscopy
[chapter]
2006
Handbook Of Biological Confocal Microscopy
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Randomly polarized beams contain two orthogonal components but the phase and ratio of the two components vary rapidly in time, creating polarization noise. ...
A sufficient number of eye protection devices should always be at hand when laser system components have to be repositioned or realigned. ...
doi:10.1007/978-0-387-45524-2_5
fatcat:2knlshddpnf4vcr6ee22ht4nye
Laser Sources for Confocal Microscopy
[chapter]
1990
Handbook of Biological Confocal Microscopy
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Randomly polarized beams contain two orthogonal components but the phase and ratio of the two components vary rapidly in time, creating polarization noise. ...
A sufficient number of eye protection devices should always be at hand when laser system components have to be repositioned or realigned. ...
doi:10.1007/978-1-4615-7133-9_5
fatcat:m3tmtfnws5dz5e7elfx3r3ye2u
Laser Sources for Confocal Microscopy
[chapter]
1995
Handbook of Biological Confocal Microscopy
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Randomly polarized beams contain two orthogonal components but the phase and ratio of the two components vary rapidly in time, creating polarization noise. ...
A sufficient number of eye protection devices should always be at hand when laser system components have to be repositioned or realigned. ...
doi:10.1007/978-1-4757-5348-6_5
fatcat:4dust3ercjh43ouyrgs72tknpm
VECSEL systems for quantum information processing with trapped beryllium ions
[article]
2020
arXiv
pre-print
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Two vertical-external-cavity surface-emitting laser (VECSEL) systems producing ultraviolet (UV) radiation at 235 nm and 313 nm are demonstrated. ...
Each system consists of a compact, single-frequency, continuous-wave VECSEL producing high-power near-infrared light, tunable over tens of nanometers. ...
Conclusion In summary, we have presented two widely-tunable VECSELbased laser sources capable of implementing tasks required for quantum information processing experiments involving trapped 9 Be + ions ...
arXiv:2003.09060v1
fatcat:olthdli67nc4xc7d3bvuei74kq
Narrowband photon pairs with independent frequency tuning for quantum light-matter interactions
[article]
2019
arXiv
pre-print
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The techniques are readily extensible to other material systems. ...
Type-II phase matching, a tuneable-birefringence resonator, MHz-resolution pump tuning, and tuneable Fabry-Perot filters are used to achieve independent signal and idler tuning. ...
Alvaro Cuevas for contributions to development of the system, Dr. Simon Coop for the valuable discussions on microcontrollers and Natália Alves for discussions and feedback on the manuscript. ...
arXiv:1911.00056v1
fatcat:mxaaqbewbfbb5oqahznyjgt73u
High-speed intravascular photoacoustic imaging at 17 μm with a KTP-based OPO
2015
Biomedical Optics Express
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Here, we demonstrate a potassium titanyl phosphate (KTP)-based optical parametric oscillator with output pulse energy up to 2 mJ at a wavelength of 1724 nm and with a repetition rate of 500 Hz. ...
In the laser system, the length of the OPO cavity was designed to be as short as 44 mm, since a short length leads to a low conversion threshold power density. ...
Both PA and US signals were collected and reconstructed as IVPA (Fig. 4(a) ) and IVUS (Fig. 4(b) ) images through the high-speed IVPA imaging system. ...
doi:10.1364/boe.6.004557
pmid:26601018
pmcid:PMC4646562
fatcat:3dxhdyb2xnajdppwfs3amqv2ei
A Survey of Molecular Communication in Cell Biology: Establishing a New Hierarchy for Interdisciplinary Applications
[article]
2020
arXiv
pre-print
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Molecular communication (MC) engineering is inspired by the use of chemical signals as information carriers in cell biology. ...
The biological nature of chemical signaling makes MC a promising methodology for interdisciplinary applications requiring communication between cells and other microscale devices. ...
for a tunable release of signal molecules. ...
arXiv:2009.00090v1
fatcat:5fhpk7dpmvc35b44ysr4srqbc4
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