Article
Chemistry, Physical
Chengyun Zhang, Yuyang Wang, Xiaohu Mi, Dazhong Wang, Huan Chen, Jinping Li, Zhengkun Fu, Zhenglong Zhang
Summary: In this study, horizontally aligned gold nanorod arrays with self-contained spacer and polarization-dependent plasmonic properties were prepared on silicon wafer substrates using a self-assembly method. The enhancement of upconversion luminescence of rare earth ions doped nanoparticles (NaYF4: Yb3+, Er3+) was investigated. Results showed that the luminescence intensity of the nanoparticles was greatly enhanced when the horizontally aligned gold nanorod arrays were used as a substrate. The self-contained spacer effectively prevented quenching of the luminescence and the arrays exhibited excellent optical polarization anisotropy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Tongtong Liu, Xiaomeng Liu, Yansong Feng, Chang-Jiang Yao
Summary: This review explores the processes and factors affecting plasmon-enhanced upconversion, investigating the influence of plasmonic nanostructures on upconversion efficiency.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ching-Wei Lin, Shengnan Huang, Marco Colangelo, Changchen Chen, Franco N. C. Wong, Yanpu He, Karl K. Berggren, Angela M. Belcher
Summary: In this study, gold nanorods were used to enhance short-wave infrared upconversion fluorescence for in vivo imaging. The upconversion emission showed significantly higher signal contrast than downconversion emission in a nonscattering medium. By varying the excitation power, the intensity of the upconversion emission was found to depend linearly on the power, suggesting an unchanged emission mechanism.
Article
Materials Science, Multidisciplinary
Abdul Rahim Ferhan, Youngkyu Hwang, Mohammed Shahrudin Bin Ibrahim, Shikhar Anand, Ahram Kim, Joshua A. Jackman, Nam-Joon Cho
Summary: This study presents the development of plasmonic gold nanorod arrays with ultrahigh surface sensitivity for detecting biomacromolecular interactions, demonstrating superior biosensing performance. By rationally tuning nanorod dimensions, the highest reported degree of surface sensitivity compared to various plasmonic nanostructures was achieved. The measurement capabilities developed in this study have broad applicability to a wide range of biosensing applications.
APPLIED MATERIALS TODAY
(2021)
Article
Materials Science, Ceramics
Meidong Yu, Yun Zhang, Bo Liu, Jiandi Liu, Zuofu Hu, Wen Ruan, Xinyuan Sun
Summary: In this study, a novel core-shell hybrid structure of (mCu2-xS, NaYF4:Er/Yb)@ porous silica composites was constructed for upconversion luminescence (UCL). The amplified internal optical field of the composites, induced by the localized surface plasmon resonance (LSPR) coupling between Cu2-xS nanoparticles, allowed more photons to participate in the upconversion process. The UCL intensity of the composites in the emission band of green was 45 times higher than that of NaYF4:Er/Yb@SiO2, and the quantum yield of the composites was 1.32%. The UCL enhancement mechanism of the composites was also investigated.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Feng Xu, Ying Sun, Huiping Gao, Suyue Jin, Zhenlong Zhang, Huafang Zhang, Gencai Pan, Miao Kang, Xinqi Ma, Yanli Mao
Summary: By synthesizing NaCsWO3@NaYF4@NaYF4:Yb,Er nanoparticles to enhance the UCL intensity, which were then used in PSCs, the power conversion efficiency of highly efficient PSCs reached 18.89%, showing a significant improvement compared to the control group.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Biotechnology & Applied Microbiology
Mitchell Lee Taylor, Raymond Edward Wilson, Kristopher Daniel Amrhein, Xiaohua Huang
Summary: Noble metal nanoparticles, especially gold nanorods, have been widely used in cancer photothermal therapy due to their unique optical properties and long blood circulation half-life. This review summarizes the optical properties of gold nanorods and their applications in photothermal therapy, as well as recent strategies to improve the therapy through combination with chemotherapy and photodynamic therapy.
BIOENGINEERING-BASEL
(2022)
Article
Optics
Huilin He, Jiawei Wang, Ke Li, Mengjia Cen, Wenfeng Cai, Jianxun Liu, Dan Luo, Yan-Qing Lu, Yan Jun Liu
Summary: In this study, a self-organized cholesteric liquid crystals (CLCs) composite induced by uniaxially aligned upconversion nanorods (UCNRs) film was demonstrated to overcome the limitation of structural defects in the development of upconversion circularly polarized luminescence (UC-CPL) with a large dissymmetry factor. It was found that the chiral upconversion luminescence (UCL) can be conveniently modulated by changing the concentration of chiral dopants or heating. Moreover, bidirectional asymmetric polarizations and emissions of UC-CPL were achieved via forward and backward excitations, and reversible switching from circular to linear polarization of UCL was realized by applying an electric field.
LASER & PHOTONICS REVIEWS
(2022)
Article
Nanoscience & Nanotechnology
Chengda Pan, Qiang Ma, Shikang Liu, Yingxian Xue, Zhiyun Fang, Shiyu Zhang, Mengyao Qin, E. Wu, Botao Wu
Summary: This study demonstrates the control of polarization state in rare-earth ions doped upconversion nanoparticles (UCNPs) at the nanoscale and single-particle level by constructing angularly anisotropic plasmonic local-field distributions in gold nanorods (Au NRs) antennae. The enhanced upconversion luminescence (UCL) of UCNP tailored by plasmonic Au NRs nanoantennae exhibits linear polarization. The findings have significance in the study of optical polarization control and its applications in optoelectronic devices.
Review
Chemistry, Analytical
Anara Molkenova, Hye Eun Choi, Jeong Min Park, Jin-Ho Lee, Ki Su Kim
Summary: Lanthanide-based upconversion nanoparticles (UCNPs) have attracted scientists' attention for their ability to convert tissue-penetrating near-infrared light into tailored optical illumination inside biological matter. These luminescent UCNPs have been widely used for background-free biorecognition and biosensing. Maximizing NIR light harvesting and upconversion efficiencies while protecting biological tissue is a challenge for laser-assisted photoactivation, and this review provides an overview of recent achievements and challenges in plasmon-modulated upconversion nanoformulations for biosensing applications.
Article
Optics
Feng Xu, Zhigao Li, Wen Luo, Yuying Wang, Zhijun Sun
Summary: This work proposes a photonic cavity structure with multiple independent resonance modes to resonantly control and enhance the upconversion luminescence (UCL) of NaYF4:Yb,Er nanoparticles. By independently tuning the surface plasmon (SP) resonance mode and the Fabry-Perot-type cavity mode, the UCL emissions can be simultaneously matched with the excitation and green- or red-emission wavelengths. As a result, strongly-enhanced high-contrast single-color UCL emissions are achieved experimentally. This work suggests a way to control and enhance light-matter interactions involving multiple frequencies of photons using multiplet-resonance structures.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Youngkyu Hwang, Dong Jun Koo, Abdul Rahim Ferhan, Tun Naw Sut, Bo Kyeong Yoon, Nam-Joon Cho, Joshua A. Jackman
Summary: Gold nanorods are used for constructing surface-based nanoplasmonic biosensing platforms. Controlling the concentration of APTES during surface preparation affects density and sensitivity of the biosensing platform.
Article
Chemistry, Physical
Wei Gao, Shanshan Han, Boyang Wang, Zeyu Sun, Yanrui Lu, Qingyan Han, Xuewen Yan, Jihong Liu, Jun Dong
Summary: This study successfully enhanced the upconversion luminescence of rare-earth materials by constructing a series of composite structures, and found that the size of Au nanoparticles, the density of the AMF substrate, and the thickness of the SiO2 isolation layer have a significant impact on the upconversion luminescence.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Feng Xu, Wen Luo, Aibibula Abudula, Yuying Wang, Zhijun Sun
Summary: Resonant control and enhancement of upconversion luminescence (UCL) of NaYF4:Yb,Er nanoparticles were achieved using multiplexed metal gratings. By designing doublet plasmon resonance modes at the excitation and green- or red-UCL emission wavelengths, or at the excitation wavelength and one of the emission wavelengths, the excitation/emission efficiencies of UCL were improved. Experimental results showed that matching the doublet plasmon resonance modes with both the excitation and emission wavelengths led to further UCL enhancements and significant modification of the emission intensity ratios. The mechanisms and resonance structures were investigated by analyzing the dependence of UCL emissions on excitation power and lifetimes. These principles and resonance structures can be applied to a broad range of optical phenomena involving photons of multiple frequencies.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Multidisciplinary
Yang Wang, Shuai Zhou, Fuyao Sun, Po Hu, Wei Zhong, Jiajun Fu
Summary: This study thoroughly discusses the effect of Yb3+ on NaErF4-based host-sensitized upconversion (UC) and provides mechanism interpretations. The results show that Yb3+ doping enhances the green UC emission in NaErF4 core nanocrystals, while it weakens the red UC emission in the shell. Furthermore, the UC emission intensity of core-inert shell nanoparticles can be influenced by the shell thickness and lattice mismatch.
Review
Nanoscience & Nanotechnology
Ananda Das, Kyuyoung Bae, Wounjhang Park
Article
Optics
Steven K. Pampel, Kyuyoung Bae, Mo Zohrabi, Michael Grayson, Thomas M. Horning, Wounjhang Park, Juliet T. Gopinath
Article
Nanoscience & Nanotechnology
Kyuyoung Bae, Jiangang Zhu, Connor Wolenski, Ananda Das, Thomas M. Horning, Steven Pampel, Michael B. Grayson, Mo Zohrabi, Juliet T. Gopinath, Wounjhang Park
Article
Optics
Jiangang Zhu, Thomas M. Horning, Mo Zohrabi, Wounjhang Park, Juliet T. Gopinath
Article
Chemistry, Physical
Myeong Jin Jeon, Xingyi Ma, Jong Uk Lee, Hyejin Roh, Conrad C. Bagot, Wounjhang Park, Sang Jun Sim
Summary: This study introduced bacteriophage MS2 as a molecular scaffold to assemble gold nanoparticles into dense nanostructures with evenly distributed electromagnetic hot spots for single-molecule-level SERS analysis. The nanoraspberry structure led to strong SERS signal amplification, with remarkable intra- and interbatch signal uniformity, demonstrating the potential for reliable molecular sensing and analysis applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Optics
Bo Xu, Brendan M. Heffernan, Kyuyoung Bae, Mark E. Siemens, Juliet T. Gopinath, Wounjhang Park
Summary: By using a rigorous group theoretical method, a class of cylindrical vector beams that can selectively excite the plasmon modes of axially symmetric plasmonic structures was identified. The choice of single V-point cylindrical vector beams as a basis simplifies symmetry analysis within the group theory framework. Numerical simulations demonstrate the selective excitation of any plasmon eigenmodes, bright or dark, individually or jointly.
Article
Nanoscience & Nanotechnology
Changwook Kim, Dongheok Shin, Monu Nath Baitha, Yunha Ryu, Augustine M. Urbas, Wounjhang Park, Kyoungsik Kim
Summary: The study introduces a solar-powered desalination method that achieves high efficiency in water evaporation and conversion through the use of biomimetic technology and solar-induced air-flow updraft. The system, featuring a bio-inspired design with a 3D structure and solar chimney, provides a feasible, environmentally friendly, and cost-effective solution for obtaining freshwater on the planet.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Ananda Das, Conrad Corbella Bagot, Eric Rappeport, Taleb Ba Tis, Wounjhang Park
Summary: In this study, an analytical model was developed to accurately describe the effects of FRET between rare-earth-doped upconversion nanoparticles (UCNPs) and fluorescent dyes for sensing applications. The model was verified using a pH sensor comprised of fluorescein isothiocyanate and Tm3+-doped UCNPs, and was further extended to core-shell UCNPs to discuss the design of an optimal FRET-based biosensor.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Conrad Corbella Bagot, Eric Rappeport, Ananda Das, Taleb Ba Tis, Wounjhang Park
Summary: This article presents a FRET-based sensor for pH measurement using UCNPs and FITC dye. By measuring the ratio of two emission wavelengths, pH can be measured exclusively through FRET.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Michael Grayson, Bo Xu, Thariq Shanavas, Mo Zohrabi, Kyuyoung Bae, Juliet T. Gopinath, Wounjhang Park
Summary: We demonstrate the fabrication process of high Q Ge28Sb12Se60 ring resonators and investigate the loss mechanisms. The results indicate that Ge23Sb7S70 waveguides fabricated under the same conditions do not exhibit the same excess loss as Ge28Sb12Se60 waveguides, suggesting that the excess loss is related to the chemical composition of the compound.
Article
Chemistry, Multidisciplinary
Shambojit Roy, Shane D. Curry, Conrad Corbella Bagot, Evan N. Mueller, Abdulrahman M. Mansouri, Wounjhang Park, Jennifer N. Cha, Andrew P. Goodwin
Summary: In this study, a photo-cross-linkable conjugate of upconverting nanoparticles and cytosine deaminase was successfully used for specific prodrug conversion at tumor sites in vivo. The technology demonstrated the ability to localize prodrug conversion to tumor sites, effectively inhibiting tumor growth and improving mouse survival time.
Article
Optics
Michael Grayson, Greg Krueper, Bo Xu, Mo Zohrabi, Dag Hjelme, Juliet T. Gopinath, Wounjhang Park
Summary: We fabricated Ge28Sb12Se60 waveguides and resonators using e-beam lithography, achieving a propagation loss of 3.88 dB/cm at 3.66 μm. Comparison of etch chemistries showed that CHF3 resulted in 1.5 dB/cm higher propagation losses at 3.6 μm due to C-H bond absorption. We demonstrated the detection of an aromatic aldehyde dissolved in a non-polar solvent with a limit of detection of 1.09 μmol/mL using the fabricated waveguides, and further reduced the detection limit to 0.25 μmol/mL with the enhancement provided by a chalcogenide ring resonator.
Article
Optics
Thariq Shanavas, Michael Grayson, Bo Xu, Mo Zohrabi, Wounjhang Park, Juliet T. Gopinath
Summary: We report the observation of cascaded forward stimulated Brillouin scattering for the first time on a microresonator platform. We have demonstrated 25 intramodal Stokes beams with a sub-milliwatt threshold. Our experimental observations are supported by theoretical modeling.
Article
Chemistry, Multidisciplinary
Kyuyoung Bae, Bo Xu, Ananda Das, Connor Wolenski, Eric Rappeport, Wounjhang Park
Summary: The combination of plasmonic nanostructures with upconversion nanoparticles has led to an enhanced sensing platform through ratiometric sensing, which improves sensing capabilities for biomedical applications.
Proceedings Paper
Engineering, Electrical & Electronic
Michael Grayson, Mo Zohrabi, Kyuyoung Bae, Jiangang Zhu, Juliet T. Gopinath, Wounjhang Park
INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XXIV
(2020)
Article
Materials Science, Biomaterials
Mohammadreza Kasravi, Alireza Yaghoobi, Tahereh Tayebi, Mahsa Hojabri, Abdolkarim Talebi Taheri, Fatemeh Shirzad, Bahram Jambar Nooshin, Radman Mazloomnejad, Armin Ahmadi, Fatemeh A. Tehrani, Ghasem Yazdanpanah, Mohammad Hadi Farjoo, Hassan Niknejad
Summary: As a promising approach in translational medicine, the decellularization of discarded livers to produce bioscaffolds that support recellularization has potential in overcoming the limitations of conventional liver transplantation. In this study, the researchers investigated the use of matrix metalloproteinase (MMP) inhibition to preserve the extracellular matrix (ECM) during liver decellularization. The results demonstrated that the application of an MMP inhibitor significantly improved the preservation of ECM components and mechanical properties of the bioscaffolds, which supported cell viability and function in vitro. The study also confirmed that the MMP inhibition led to the inhibition of MMP2 and MMP9, providing a novel method to enhance ECM preservation during liver decellularization.
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Mohammadsadegh Nadimifar, Weiguang Jin, Clara Coll-Satue, Gizem Bor, Paul Joseph Kempen, Ali Akbar Moosavi-Movahedi, Leticia Hosta-Rigau
Summary: This study presents a metal-phenolic self-assembly approach that can prepare nanoparticles fully made of hemoglobin. The nanoparticles exhibit good oxygen binding and releasing capabilities.
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Jyoti Kumari, Roel Hammink, Jochem Baaij, Frank A. D. T. G. Wagener, Paul H. J. Kouwer
Summary: Fibrosis is the formation of fibrous connective tissue in response to injury, leading to organ dysfunction. A novel hybrid hydrogel combining synthetic polyisocyanide with hyaluronic acid has been developed, showing strong antifibrotic properties.
BIOMATERIALS ADVANCES
(2024)
Letter
Materials Science, Biomaterials
Melissa Machado Rodrigues, Cristian Padilha Fontoura, Charlene Silvestrin Celi Garcia, Sandro Tomaz Martins, Joao Antonio Pegas Henriques, Carlos Alejandro Figueroa, Mariana Roesch Ely, Cesar Aguzzoli
BIOMATERIALS ADVANCES
(2024)
Article
Materials Science, Biomaterials
Jessica Polak, David Sachs, Nino Scherrer, Adrian Suess, Huan Liu, Mitchell Levesque, Sabine Werner, Edoardo Mazza, Gaetana Restivo, Mirko Meboldt, Costanza Giampietro
Summary: Human skin equivalents (HSEs) play a crucial role in tissue engineering. This study introduces a 3D-printed culture insert to apply a static radial constraint on HSEs and examines its effects on tissue characteristics. The results show that the diameter of the culture insert significantly influences tissue contraction, fibroblast and matrix organization, keratinocyte differentiation, epidermal stratification, and basement membrane formation. This study provides important insights for the design of skin tissue engineering.
BIOMATERIALS ADVANCES
(2024)
Review
Materials Science, Biomaterials
Shiliang Chen, Tianming Du, Hanbing Zhang, Jing Qi, Yanping Zhang, Yongliang Mu, Aike Qiao
Summary: This paper reviewed the primary methods for improving the overall properties of biodegradable zinc stents. It discussed the mechanical properties, degradation behavior, and biocompatibility of various improvement strategies. Alloying was found to be the most common, simple, and effective method for improving mechanical properties. Deformation processing and surface modification further improved the mechanical properties and biological activity of zinc alloys. Meanwhile, structural design could endow stents with special properties. Manufacturing zinc alloys with excellent properties and exploring their interaction mechanism with the human body are areas for future research.
BIOMATERIALS ADVANCES
(2024)
