Developing High Sensitivity Biomass Sensor Using Lamé Mode Square Resonator

In this paper, a new cost-effective and reliable high performance biomass sensor is presented. Compared to previous biomass sensors, the developed sensor shows a potential to detect smaller biological agents by producing a high quality output signal at atmospheric pressure. The biomass sensor is a micro machined silicon squared plate that is excited in the Lamé bulk acoustic resonant mode at a frequency of 37.8 MHz, with quality factor of 10,000 and the mass sensitivity of -400 Hz/pg.

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Broadband plasmonic silver nanoflowers for high-performance random lasing covering visible region

Nanophotonics ◽

10.1515/nanoph-2017-0010 ◽

2017 ◽

Vol 6 (5) ◽

pp. 1151-1160 ◽

Cited By ~ 23

Author(s):

Qing Chang ◽

Xiaoyu Shi ◽

Xuan Liu ◽

Junhua Tong ◽

Dahe Liu ◽

...

Keyword(s):

Quality Factor ◽

High Performance ◽

Coupling Effect ◽

Synthesis Method ◽

Visible Region ◽

High Quality Factor ◽

Visible Range ◽

Random Lasing ◽

High Quality ◽

Random Lasers

AbstractMulticolor random lasing has broad potential applications in the fields of imaging, sensing, and optoelectronics. Here, silver nanoflowers (Ag NF) with abundant nanogaps are fabricated by a rapid one-step solution-phase synthesis method and are first proposed as effective broadband plasmonic scatterers to achieve different color random lasing. With abundant nanogaps and spiky tips near the surface and the interparticle coupling effect, Ag NFs greatly enhance the local electromagnetic field and induce broadband plasmonic scattering spectra over the whole visible range. The extremely low working threshold and the high-quality factor for Ag NF-based random lasers are thus demonstrated as 0.24 MW cm−2 and 11,851, respectively. Further, coherent colorful random lasing covering the visible range is realized using the dye molecules oxazine (red), Coumarin 440 (blue), and Coumarin 153 (green), showing high-quality factor of more than 10,000. All these features show that Ag NF are highly efficient scatterers for high-performance coherent random lasing and colorful random lasers.

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Flexible Ecoflex®/Graphene Nanoplatelet Foams for Highly Sensitive Low-Pressure Sensors

Sensors ◽

10.3390/s20164406 ◽

2020 ◽

Vol 20 (16) ◽

pp. 4406

Author(s):

Marco Fortunato ◽

Irene Bellagamba ◽

Alessio Tamburrano ◽

Maria Sabrina Sarto

Keyword(s):

High Performance ◽

Pressure Sensors ◽

High Sensitivity ◽

Cost Effective ◽

Low Pressure ◽

Human Motion ◽

Compression Tests ◽

Piezoresistive Sensors ◽

Human Motion Detection ◽

Pressure Regime

The high demand for multifunctional devices for smart clothing applications, human motion detection, soft robotics, and artificial electronic skins has encouraged researchers to develop new high-performance flexible sensors. In this work, we fabricated and tested new 3D squeezable Ecoflex® open cell foams loaded with different concentrations of graphene nanoplatelets (GNPs) in order to obtain lightweight, soft, and cost-effective piezoresistive sensors with high sensitivity in a low-pressure regime. We analyzed the morphology of the produced materials and characterized both the mechanical and piezoresistive response of samples through quasi-static cyclic compression tests. Results indicated that sensors infiltrated with 1 mg of ethanol/GNP solution with a GNP concentration of 3 mg/mL were more sensitive and stable compared to those infiltrated with the same amount of ethanol/GNP solution but with a lower GNP concentration. The electromechanical response of the sensors showed a negative piezoresistive behavior up to ~10 kPa and an opposite trend for the 10–40 kPa range. The sensors were particularly sensitive at very low deformations, thus obtaining a maximum sensitivity of 0.28 kPa−1 for pressures lower than 10 kPa.

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Growth of centimeter-scale high-quality In2Se3 films for transparent, flexible and high performance photodetectors

Journal of Materials Chemistry C ◽

10.1039/c6tc02296k ◽

2016 ◽

Vol 4 (34) ◽

pp. 8094-8103 ◽

Cited By ~ 54

Author(s):

Z. Q. Zheng ◽

J. D. Yao ◽

G. W. Yang

Keyword(s):

High Performance ◽

High Sensitivity ◽

High Quality

A centimeter-scale In2Se3 film has been achieved via PLD and high-sensitivity photodetection has been demonstrated.

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The role and impact of high throughput biomimetic measurements in drug discovery

ADMET & DMPK ◽

10.5599/admet.530 ◽

2018 ◽

Vol 6 (2) ◽

pp. 74-84 ◽

Cited By ~ 5

Author(s):

Shenaz Bunally ◽

Robert J Young

Keyword(s):

High Performance Liquid Chromatography ◽

Liquid Chromatography ◽

Drug Discovery ◽

Physicochemical Property ◽

Physicochemical Properties ◽

High Throughput ◽

High Performance ◽

Cost Effective ◽

High Quality ◽

The Right

During the early phase of drug discovery, it is becoming increasingly important to acquire the full physicochemical profile of molecules. For this purpose, there is a strong interest in developing efficient and cost-effective platforms for fast and reliable measurements of physicochemical properties. We have developed an automated physchem platform which ensures that consistent, comprehensive, and high-quality physicochemical property measurements and derived property information for 100's of compounds per week are available alongside potency data at the right time to guide compound progression decisions. We discuss the routine assessments of biomimetic properties using high throughput automated high-performance liquid chromatography (HPLC) platforms, with details of the methods and hardware employed, also with illustrations of the quality and impact of the data generated.

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Highly sensitive fluid sensing due to slow light in pillar-based photonic crystal ring resonators

tm - Technisches Messen ◽

10.1515/teme-2017-0135 ◽

2018 ◽

Vol 85 (7-8) ◽

pp. 515-520

Author(s):

Reyhaneh Jannesari ◽

Thomas Grille ◽

Bernhard Jakoby

Keyword(s):

Photonic Crystal ◽

Quality Factor ◽

Slow Light ◽

Ring Resonator ◽

Resonant Mode ◽

High Quality Factor ◽

Ring Resonators ◽

High Quality ◽

Highly Sensitive ◽

Photonic Crystal Ring Resonator

Abstract A design for a high quality factor photonic crystal ring resonator (PCRR) is presented. The PCRR is based on pillar type photonic crystals, which consist of a hexagonal array of silicon rods. The cavity is created by removing elements from the regular photonic crystal (PhC) grid. Achieving strong confinement of light intensity in the low index region is the advantage of this PCRR. In that manner, the interaction of light and analyte, which can be a liquid or a gas, will be enhanced. The high quality factor of the cavity (Q=1.0229\times {10}^{5}), along with strong overlap between the field of the resonant mode and the analyte as well as the low group velocity of PCRR modes yield enhanced light-matter interaction. An enhancement factor of \gamma =2.127\times {10}^{4} compared to the bulk light absorption in a homogenous material provides the potential for highly sensitive gas detection with a photonic crystal ring resonator.

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Effect of Imperfections on Fused Silica Shell Resonators

Volume 10: Micro- and Nano-Systems Engineering and Packaging ◽

10.1115/imece2014-39303 ◽

2014 ◽

Author(s):

Ali Darvishian ◽

Behrouz Shiari ◽

Jae Yoong Cho ◽

Khalil Najafi

Keyword(s):

Quality Factor ◽

High Performance ◽

Silica Shell ◽

Fused Silica ◽

High Quality Factor ◽

High Quality ◽

Geometric Imperfection ◽

Mass Imbalance ◽

Resonance Frequencies ◽

Frequency Split

Axisymmetric shell resonators have been attractive candidates for high performance MEMS vibratory gyroscopes because of their high quality factor, low sensitivity to environmental vibrations and electrostatic tuning capability. Fused silica shell resonators made by blow torch molding with high quality factor could perform as high performance MEMS gyroscopes. Despite such advantageous features, the performance of these shell resonators is limited by geometric imperfections that occur during fabrication. This paper investigates effect of geometric asymmetries such as height and radius imperfections, notch, and mass imbalance in the rim of gyroscopes on the split in natural frequencies of the n=2 wineglass modes. Numerical simulation shows that perfect fused silica shell has 13929 Hz natural resonance frequencies without any frequency split. Analysis of imperfect shell reveals that frequency split is very sensitive to edge geometric imperfection and mass imbalance in the rim. On the other hand, Δf is not very sensitive to the notch in the rim of shell and height imperfection less than 40μm.

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