ORCID Profile
0000-0003-1640-9620
Current Organisations
Jinan University
,
Shandong University
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Publisher: Wiley
Date: 21-02-2021
DOI: 10.1002/BMM2.12013
Publisher: Elsevier BV
Date: 11-2001
Publisher: Elsevier BV
Date: 07-2019
Publisher: Wiley
Date: 08-05-2018
Publisher: World Scientific Pub Co Pte Lt
Date: 27-07-2012
DOI: 10.1142/S0217984912501424
Abstract: Neutron powder diffraction has been carried out on a congruent LiNbO 3 s le containing 7 Li isotope ( C 7 LN ) and a near stoichiometric Mg doped LiNbO 3 s le ( Mg : NSLN ) in the temperature range of 4 K and 90 K. Large anisotropic displacement parameters (ADPs) of the Li ions have shown evidence of large disorder along the c-axis for both s les. The results have shown no evidence for the existence of anomalous structural behavior for both s les at low temperatures, although abnormal structural features at 55 K and 100 K for a LiNbO 3 crystal having different Li content as the s les used in the present studies have been observed by Fernandez-Ruiz et al. [Phys. Rev. B72 (2005) 184108].
Publisher: American Chemical Society (ACS)
Date: 03-05-2023
Publisher: Wiley
Date: 18-04-2023
Abstract: Treating bacterial biofilm infections on implanted materials remains challenging in clinical practice, as bacteria can be resistant by weakening the host defense from immune cells like macrophages. Herein, a metal‐piezoelectric hetero‐nanostructure with mechanical energy‐driven antimicrobial property is in situ constructed on the Ti implant. Under ultrasonic irradiation, the formed piezotronic Ti (piezoTi) can promote the generation of reactive oxygen species (ROS) by facilitating local charge transfer at the surface, thus leading to piezodynamic killing of Staphylococcus aureus ( S. aureus ) while downregulating biofilm‐forming genes. In addition, the stimulated macrophages on piezoTi display potent phagocytosis and anti‐bacterial activity through the activation of PI3K‐AKT and MAPK pathway. As a demonstration, one‐time ultrasound irradiation of piezoTi pillar implanted in an osteomyelitis model efficiently eliminates the S. aureus biofilm infection and rescues the implant with enhanced osteointegration. By the synergistic effect of ultrasound‐driven piezodynamic therapy and immuno‐regulation, the proposed piezoelectric nanostructured surface can endow Ti implants with highly efficient antibacterial performance in an antibiotic‐free, noninvasive, and on‐demand manner.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CE25828E
Publisher: Wiley
Date: 03-12-2021
Abstract: Ferroelectric materials (FEMs), possessing piezoelectric, pyroelectric, inverse piezoelectric, nonlinear optic, ferroelectric‐photovoltaic, and many other properties, are attracting increasing attention in the field of biomedicine in recent years. Because of their versatile ability of interacting with force, heat, electricity, and light to generate electrical, mechanical, and optical signals, FEMs are demonstrating their unique advantages for biosensing, acoustics tweezer, bioimaging, therapeutics, tissue engineering, as well as stimulating biological functions. This review summarizes the current‐available FEMs and their state‐of‐the‐art fabrication techniques, as well as provides an overview of FEMs‐based applications in the field of biomedicine. Challenges and prospects for future development of FEMs for biomedical applications are also outlined.
Publisher: Elsevier BV
Date: 12-2016
Publisher: Wiley
Date: 04-10-2012
Abstract: MoS(2) nanosheet-coated TiO(2) nanobelt heterostructures--referred to as TiO(2)@MoS(2)--with a 3D hierarchical configuration are prepared via a hydrothermal reaction. The TiO(2) nanobelts used as a synthetic template inhibit the growth of MoS(2) crystals along the c-axis, resulting in a few-layer MoS(2) nanosheet coating on the TiO(2) nanobelts. The as-prepared TiO(2)@MoS(2) heterostructure shows a high photocatalytic hydrogen production even without the Pt co-catalyst. Importantly, the TiO(2)@MoS(2) heterostructure with 50 wt% of MoS(2) exhibits the highest hydrogen production rate of 1.6 mmol h(-1) g(-1). Moreover, such a heterostructure possesses a strong adsorption ability towards organic dyes and shows high performance in photocatalytic degradation of the dye molecules.
Publisher: American Chemical Society (ACS)
Date: 24-01-2017
Abstract: Semiconductor photocatalysts have been widely used for solar-to-hydrogen conversion however, efficient photocatalytic hydrogen generation still remains a challenge. To improve the photocatalytic activity, the critical step is the transport of photogenerated carriers from bulk to surface. Here, we report the carrier step-by-step transport (CST) for semiconductor photocatalysts through precise defect engineering. In CST, carriers can fast transport from bulk to shallow traps in the defective subsurface first, and then transfer to the surface active acceptors. The key challenge of initiating CST lies in fine controlling defect distribution in semiconductor photocatalysts to introduce the special band matching between the crystalline bulk and defect-controllable surface, moderate bridgelike shallow traps induced by subsurface defects, and abundant surface active sites induced by surface defects. In our proof-of-concept demonstration, the CST was introduced into typical semiconductor TiO
No related grants have been discovered for Hong Liu.