A highly sensitive sensor for the detection of nitrite based on a nanoporous Fe2O3–CoO composite

2014 ◽  
Vol 6 (9) ◽  
pp. 3147-3151 ◽  
Author(s):  
Jinping Wang ◽  
Dianyun Zhao ◽  
Yu Zhang ◽  
Juefei Li ◽  
Caixia Xu
Keyword(s):  
Three Dimensional ◽  
Structure Stability ◽  
Highly Sensitive ◽  
Sensitive Sensor ◽  
Analytical Utility ◽  
Performance Structure ◽  
Sensing Performance

A nanoporous (NP) Fe2O3–CoO composite, with an open three-dimensional bicontinuous nanoparticle architecture, was easily fabricated by selectively dealloying Fe5Co5Al90, exhibiting great sensing performance, structure stability, and analytical utility for nitrite sensing.

Graphene quantum dot-functionalized three-dimensional ordered mesoporous ZnO for acetone detection toward diagnosis of diabetes

Nanoscale ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 11496-11504 ◽  
Author(s):  
Wei Liu ◽  
Xiangyu Zhou ◽  
Lin Xu ◽  
Shidong Zhu ◽  
Shuo Yang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Three Dimensional ◽  
Graphene Quantum Dot ◽  
Ordered Mesoporous ◽  
Highly Sensitive ◽  
Sensitive Sensor ◽  
Mesoporous Zno ◽  
Self Assembled ◽  
Acetone Detection

Self-assembled GQD-modified 3DOM ZnO was developed as a highly sensitive sensor for trace acetone detection toward the diagnosis of diabetes.

A Three-Dimensional Tetraphenylethylene-Based Fluorescence Covalent Organic Framework for Molecular Recognition

2020 ◽  
Author(s):  
Junxia Ren ◽  
Yaozu Liu ◽  
Xin Zhu ◽  
Yangyang Pan ◽  
Yujie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Fluorescence Probe ◽  
Three Dimensional ◽  
Hazardous Substances ◽  
Covalent Organic Framework ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Polycyclic Aromatic ◽  
Better Than ◽  
Organic Framework

<p><a></a><a></a><a></a><a></a><a></a><a></a><a></a><a>The development of highly-sensitive recognition of </a><a></a><a></a><a></a><a></a><a>hazardous </a>chemicals, such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), is of significant importance because of their widespread social concerns related to environment and human health. Here, we report a three-dimensional (3D) covalent organic framework (COF, termed JUC-555) bearing tetraphenylethylene (TPE) side chains as an aggregation-induced emission (AIE) fluorescence probe for sensitive molecular recognition.<a></a><a> </a>Due to the rotational restriction of TPE rotors in highly interpenetrated framework after inclusion of dimethylformamide (DMF), JUC-555 shows impressive AIE-based strong fluorescence. Meanwhile, owing to the large pore size (11.4 Å) and suitable intermolecular distance of aligned TPE (7.2 Å) in JUC-555, the obtained material demonstrates an excellent performance in the molecular recognition of hazardous chemicals, e.g., nitroaromatic explosives, PAHs, and even thiophene compounds, via a fluorescent quenching mechanism. The quenching constant (<i>K</i><sub>SV</sub>) is two orders of magnitude better than those of other fluorescence-based porous materials reported to date. This research thus opens 3D functionalized COFs as a promising identification tool for environmentally hazardous substances.</p>

scholarly journals Comparative Study of Silk Fibroin-Based Hydrogels and Their Potential as Material for 3-Dimensional (3D) Printing

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3887
Author(s):  
Watcharapong Pudkon ◽  
Chavee Laomeephol ◽  
Siriporn Damrongsakkul ◽  
Sorada Kanokpanont ◽  
Juthamas Ratanavaraporn
Keyword(s):  
3D Printing ◽  
Silk Fibroin ◽  
Biomedical Applications ◽  
Mechanical Stability ◽  
Three Dimensional ◽  
Structure Stability ◽  
3 Dimensional ◽  
Critical Technology ◽  
Box Structure ◽  
High Degree

Three-dimensional (3D) printing is regarded as a critical technology in material engineering for biomedical applications. From a previous report, silk fibroin (SF) has been used as a biomaterial for tissue engineering due to its biocompatibility, biodegradability, non-toxicity and robust mechanical properties which provide a potential as material for 3D-printing. In this study, SF-based hydrogels with different formulations and SF concentrations (1–3%wt) were prepared by natural gelation (SF/self-gelled), sodium tetradecyl sulfate-induced (SF/STS) and dimyristoyl glycerophosphorylglycerol-induced (SF/DMPG). From the results, 2%wt SF-based (2SF) hydrogels showed suitable properties for extrusion, such as storage modulus, shear-thinning behavior and degree of structure recovery. The 4-layer box structure of all 2SF-based hydrogel formulations could be printed without structural collapse. In addition, the mechanical stability of printed structures after three-step post-treatment was investigated. The printed structure of 2SF/STS and 2SF/DMPG hydrogels exhibited high stability with high degree of structure recovery as 70.4% and 53.7%, respectively, compared to 2SF/self-gelled construct as 38.9%. The 2SF/STS and 2SF/DMPG hydrogels showed a great potential to use as material for 3D-printing due to its rheological properties, printability and structure stability.

Synthesis and application of polycation-stabilized gold nanoparticles as a highly sensitive sensor for molecular cysteine determination

2021 ◽  
pp. 106481
Author(s):  
Quang Khanh Nguyen ◽  
Thi Hieu Hoang ◽  
Xuan Thanh Bui ◽  
Thi Anh Huong Nguyen ◽  
Tien Duc Pham ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Highly Sensitive ◽  
Sensitive Sensor

scholarly journals A flexible and highly sensitive pressure sensor based on three-dimensional electrospun carbon nanofibers

RSC Advances ◽  
2021 ◽  
Vol 11 (23) ◽  
pp. 13898-13905
Author(s):  
Chuan Cai ◽  
He Gong ◽  
Weiping Li ◽  
Feng Gao ◽  
Qiushi Jiang ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Pressure Sensor ◽  
Carbon Nanofiber ◽  
Three Dimensional ◽  
High Sensitivity ◽  
Highly Sensitive ◽  
Sensitive Pressure

A three-dimensional electrospun carbon nanofiber network was used to measure press strains with high sensitivity.

A biomimetic 3D airflow sensor made of an array of two piezoelectric metal-core fibers

Sensor Review ◽  
2017 ◽  
Vol 37 (3) ◽  
pp. 312-321 ◽  
Author(s):  
Yixiang Bian ◽  
Can He ◽  
Kaixuan Sun ◽  
Longchao Dai ◽  
Hui Shen ◽  
...  
Keyword(s):  
Design Methodology ◽  
Spherical Surface ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Piezoceramic Cylinder ◽  
Metal Core ◽  
Content Type ◽  
3D Space ◽  
Highly Sensitive ◽  
Airflow Sensor

Purpose The purpose of this paper is to design and fabricate a three-dimensional (3D) bionic airflow sensing array made of two multi-electrode piezoelectric metal-core fibers (MPMFs), inspired by the structure of a cricket’s highly sensitive airflow receptor (consisting of two cerci). Design/methodology/approach A metal core was positioned at the center of an MPMF and surrounded by a hollow piezoceramic cylinder. Four thin metal films were spray-coated symmetrically on the surface of the fiber that could be used as two pairs of sensor electrodes. Findings In 3D space, four output signals of the two MPMFs arrays can form three “8”-shaped spheres. Similarly, the sensing signals for the same airflow are located on a spherical surface. Originality/value Two MPMF arrays are sufficient to detect the speed and direction of airflow in all three dimensions.

scholarly journals Development of a highly sensitive three-dimensional gel electrophoresis method for characterization of monoclonal protein heterogeneity

2013 ◽  
Vol 438 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Keiichi Nakano ◽  
Shogo Tamura ◽  
Kohei Otuka ◽  
Noriyasu Niizeki ◽  
Masahiko Shigemura ◽  
...  
Keyword(s):  
Gel Electrophoresis ◽  
Three Dimensional ◽  
Monoclonal Protein ◽  
Highly Sensitive ◽  
Electrophoresis Method

Amperometric sensor for ascorbic acid using a gold electrode modified with ZnO@SiO2 nanospheres

2016 ◽  
Vol 40 (10) ◽  
pp. 8438-8443 ◽  
Author(s):  
Sher Bahadar Khan ◽  
Md Sameer Ahmed ◽  
Abdullah M. Asiri
Keyword(s):  
Ascorbic Acid ◽  
Gold Electrode ◽  
Low Cost ◽  
Amperometric Sensor ◽  
Highly Sensitive ◽  
Sensitive Sensor

A highly sensitive sensor based on ZnO@SiO2 nanospheres has been developed for the detection of ascorbic acid. The developed sensor is very simple and has been fabricated using low cost materials.

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