Zhuang Tian's research while affiliated with Jinan University (Guangzhou, China) and other places

Publications (11)

Article
Full-text available
A non-radiation based approach based on thermoresponsive polyer coated silica microfibers has been developed. A highly thermoresponsive and bio-compatible pNIPAM was surface functionlized to conjugate to the tapered silica microfiber with waist diameter of 7.5 μm. The interfacial phase transtition of coating triggered by the LCST cause a drastic mo...
Article
An ultrasensitive tapered fiber-optic sensor functionalized with size-selective molecular sieve (Fe3O4@SiO2@meso SiO2 microspheres) arrays for label-free γ-aminobutyric acid (GABA) detection has been proposed and experimentally demonstrated. The surface morphology of the Fe3O4@SiO2@meso SiO2 microspheres and optical properties of tapered fiber-opti...
Article
A single taper-based fiber modal interferometer with magnetic fluid integrated, which can have responses of dip wavelength and extinction ratio on the external magnetic field and temperature changes, is demonstrated. Within the magnetic field range from 50Oe to 100Oe, the measured sensitivities are 88pm/Oe and 0.1419dB/Oe for dip wavelength and ex...
Article
Full-text available
A sensitive bio-probe to in situ detect unlabeled single-stranded DNA targets based on optical microfiber taper interferometer coated by a high ordered pore arrays conjugated polymer has been presented. The polymer coating serves as tentacles to catch single-stranded DNA molecules by π-π conjugated interaction and varies the surface refractive inde...
Article
Phase separation process of poly (N-isopropylacrylamide) (PNIPAM) aqueous solution was investigated by tapered optical fiber technique in this work. The optical transmission spectra revealed the transition of molecular conformation and aggregation of molecular chains in the course of phase separation and identified the lower critical solution tempe...
Article
A high-sensitivity temperature sensor based on thermal responsive polymer coated fiber taper interferometer is presented. And the polymer improves the temperature sensitivity of structure to 44.1 nm/oC. It promises a wide application.
Article
We fabricate a magnetic field sensor by immersing a rectangular microfiber into a magnetic fluid in a Sagnac polarization interferometer. The measured sensitivity is ∼98pm/Oe in the magnetic field range from 0 to 85Oe.
Article
A high-sensitivity biosensor based on mesoporous Fe3O4@SiO2 nanospheres coated fiber taper interferometer is presented. And the special selectivity of SiO2 film improves concentration sensitivity reaching to 1.0524 nm/log M with good linearity.
Conference Paper
Sensitive fluorescent membranes with different morphologies have been transferred to LPG sensors by simple solvent-induced way. It combines polymer self-assembly with LPG fiber, promising a wide application in fluorescence optical sensors.
Article
A magnetic field sensor is demonstrated by placing a bent-fiber taper modal interferometer inside a magnetic fluid sealed with an organic glass base. Owing to the strong refractive index dependency of the interferometer and magneto-optics property of the fluid, our sensor exhibits high sensitivity to the external magnetic field change. A linear wav...
Conference Paper
We demonstrate an ultrasensitive temperature sensor by sealing a highly-birefringent microfiber into an alcoholinfiltrated copper capillary. With a Sagnac loop configuration, the interferometric spectrum is strongly dependent on the external refractive index (RI) with sensitivity of 36800nm/RIU around RI=1.356. As mainly derived from the ultrahigh...

Citations

... IGH-SENSITIVITY fiber-optic refractive index (RI) sensors have been of interest to researchers for a long time since RI is a fundamental optical parameter of materials or medium, and RI is not only related to numerous physical parameters such as temperature [1]- [3], deformation [4], and strain [5], but also to various chemical parameters such as humidity [6], [7] and concentration of gas or biomolecule [8]- [10], hence the construction of high-sensitivity fiber-optic RI sensor will further promote the development of specific fiberoptic physical, chemical, biological, and environmental sensors. ...
... In recent years, optical fiber magnetic field sensors are gaining popularities due to their important features such as resistance to electromagnetic interference, corrosion and high mechanical force, miniaturization, and high resolution. Recently, Huang et al. [489] developed Fe 3 O 4 @SiO 2 @meso SiO 2 microspheres functionalized optical fiber magnetic sensor for the detection of γ-aminobutyric acid (GABA) (Fig. 23((a)-step-I)). The functionalization route of optical fiber for the detection of GABA is shown in Fig. 23((a)-step-II). ...
... In these scenarios, sensors that only have the ability to measure a single parameter are unable to meet the requirements. In order to address this problem, various solutions have been proposed [11][12][13][14]. Miao Yinping et al. [11] proposed a dual-parameter measurement scheme based on long-period fiber grating and multimode fiber. ...
... Optical fiber sensors operate on different sensing mechanisms (Daems, et al., 2016). Due to their advantageous features such as affordable fabrications, convenient shaping, less consumption of samples in real-time, etc (Huang, et al., 2015). Optical sensors have been used as immune sensors as well for the detection of antigen antibodies (Liu, et al., 2017;Lu, et al., 2017). ...