Article
Multidisciplinary Sciences
Yanlin Lv, Feng Li, Shuang Wang, Guihong Lu, Weier Bao, Yugang Wang, Zhiyuan Tian, Wei Wei, Guanghui Ma
Summary: The anticancer platelet-based biomimetic formulation developed in this study integrates photothermal nanoparticles and immunostimulator into platelets to target tumor cells effectively. By accumulating at tumor sites and releasing active components, this formulation induces a strong immune response against residual, metastatic, and recurrent tumors, showing exceptionally high therapeutic efficacy across various murine models.
Article
Chemistry, Physical
Yichen Wang, Lu Wang, Zhaosu Liu, Enyi Ye, Jia Hong Pan, Guijian Guan, Zibiao Li
Summary: High efficiency solar light use in photocatalysis is a promising solution to environmental problems and energy crises. However, utilizing the near infrared portion as photocatalytic power has been challenging. Recently, emerging NIR-harvesting nanosystems have been developed to degrade organic contaminants and reduce CO2 into fuel species. Creating nano-structured materials and enhancing the photocatalytic process have advanced the utilization of NIR light.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Energy & Fuels
Ranbir Singh, Prasun Kumar, Pankaj Kumar, Sumit Chaudhary, Zhipeng Kan, Vikrant Sharma, Satinder K. Sharma
Summary: This article introduces a design of indoor bifacial perovskite photovoltaics that can efficiently collect light energy from both the top and bottom sides. Through experiments, the photovoltaic demonstrates high efficiency and excellent bifaciality factor, as well as superior operational stability under continuous illumination. This design provides a cost-effective and efficient technology for harvesting more energy from artificial indoor light sources.
Review
Chemistry, Multidisciplinary
Dong Meng, Ran Zheng, Yepin Zhao, Elizabeth Zhang, Letian Dou, Yang Yang
Summary: Near-infrared (NIR)-absorbing organic semiconductors have revolutionized organic photovoltaic (OPV) research, enabling advancements in materials synthesis, device architecture, and efficiency improvement. This review categorizes NIR photovoltaic materials based on their absorption window and discusses the structure-property relationships to meet diverse application requirements. The potential of NIR materials in transparent OPVs, tandem OPVs, and photodetectors is highlighted, along with a discussion on the challenges and future directions for novel NIR materials in next-generation organic photovoltaics.
ADVANCED MATERIALS
(2022)
Article
Electrochemistry
Daisuke Sakamoto, Masaharu Shiratani, Hyunwoong Seo
Summary: Light harvesting plays a significant role in enhancing photovoltaic performance and upconversion characteristics is a promising solution. In this study, Er3+ doped Y2O3 nanoparticles were used as upconverting material, which emitted visible light after absorbing near-infrared light and were absorbed by dye-sensitized electrode. Incorporation of the nanoparticles in DSCs increased photovoltage but decreased photocurrent, while significantly expanding the photoconversion edge and enhancing the DSC performance.
ELECTROCHIMICA ACTA
(2022)
Article
Biophysics
Jinmo Jeong, Jieun Jung, Dongwuk Jung, Juho Kim, Hunpyo Ju, Tae Kim, Jongho Lee
Summary: Optogenetics is a cutting-edge tool in neuroscience that demonstrates causal relationships by manipulating specific neuronal populations and observing behavioral phenotypes, but the tethering system used to deliver light can constrain natural animal behaviors and experimental design.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Physical
Joel Troughton, Sebastian Neubert, Nicola Gasparini, Diego Rosas Villalva, Jules Bertrandie, Akmaral Seitkhan, Sri Harish Kumar Paleti, Anirudh Sharma, Michele De Bastiani, Erkan Aydin, Thomas D. Anthopoulos, Stefaan De Wolf, Rutger Schlatmann, Derya Baran
Summary: Monolithically stacked tandem solar cells offer the opportunity to absorb more solar radiation with reduced energy loss, with carefully adjusted bandgaps to avoid competition for photons. Two-terminal tandem solar cells using wide bandgap amorphous silicon and narrow bandgap NFA bulk-heterojunction show high power conversion efficiencies exceeding 15%, with interface engineering allowing for stability across a wide range of light intensities. The addition of an inorganic silicon subcell enhances operational stability and reduces light-stress on the bulk heterojunction, addressing a longstanding challenge in organic photovoltaic research.
ADVANCED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Biao Liu, Honglie Shen, Jingzhe Zhang, Dewen Chen, Weibiao Mao
Summary: High-performance CuSCN/Si heterojunction near-infrared photodetectors were prepared using nanoscale light-trapping optical structures. The CuSCN/Si photodetectors exhibited superior light response due to the light-trapping structures, and achieved high responsivity and detectivity under near-infrared light irradiation. The use of micro-nano light-trapping substrates further improved the performance of CuSCN/Si heterojunction photodetectors in near-infrared photodetection.
Article
Engineering, Environmental
Aliya Tiemuer, Hui Yu, Chao Zhao, Wanlu Sun, Yuanyuan Zhang, Yiming Jiang, Yueqing Gu, Yi Liu
Summary: Gas therapy, particularly utilizing NO gas transmitter, has shown promise for effective cancer treatment. This study focused on addressing the drawbacks of current NO prodrugs, developing NIR light-triggered NO-releasing donors with superb spatiotemporal controllability for efficient NO delivery and real-time drug monitoring. The use of frequency upconversion luminescence (FUCL) readout for imaging provides high sensitivity and resolution, making it a potential breakthrough in deep-seated tumor therapy.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Engineering, Electrical & Electronic
Keith Behrman, Ioannis Kymissis
Summary: Micro light-emitting diodes (microLEDs) are an emerging display technology with advantages in brightness, color, pixel size, and lifetime. They can be used to create novel display applications and have the potential to become the next prominent display technology in consumer electronics.
NATURE ELECTRONICS
(2022)
Article
Engineering, Mechanical
David Badler, Yuri Kligerman, Haytam Kasem
Summary: There are various potential applications of biomimetic adhesive solutions, including climbing robotic systems, mobile sensor platforms, and biomedical applications. Achieving resistance to both normal and tangential loads is a critical issue that still needs to be addressed. Experimental investigation of combined biomimetic adhesive micro-textures on tribological performances is needed to apply this idea to the design of an artificial texture having similar biomimetic properties. Our work demonstrates that combinations of different shapes of biomimetic adhesive micro-textures show increased efficiency under different contact environments and enable long-term adhesive solutions, providing insights into the design of adhesive systems inspired by nature.
Article
Engineering, Mechanical
David Badler, Roman Goltsberg, Aiman Abu Ammar, Haytam Kasem
Summary: Although adhesive biomimetic textures have been extensively studied, the combination of different microtextures in insects is still of interest. This study presents a unique manufacturing method for creating combined textures of different shapes. The tribological performances of these combined textures are examined under different velocities and loads, and different power laws are proposed to describe the relationship between velocities and detachment force/friction coefficient. The behavior of the combined textures can be approximated by merging existing models.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Arivazhagan Valluvar Oli, Zinuo Li, Yu Chen, Aruna Ivaturi
Summary: This study investigates the use of perovskite solar cells for energy harvesting from indoor near-UV LED lights. The optimized solar cells achieved high power conversion efficiencies and power output when measured under near-UV illumination. UV-stable solar cells fabricated with a modified electron transport layer showed improved stability and performance under UV exposure.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Emre Arkan, Abdulkerim Karabiber, Mehmet Ali Topcu, Zeynep Kinas, Adem Sarilmaz, Sultan Suleyman Ozel, Faruk Ozel
Summary: Engineering materials with high dielectric constant, such as nanopowders, is crucial for highly efficient TENGs. This study focuses on studying the doping effect of two different architectures of the same compound on triboelectric production. Nanopowder Cerium Oxide (CeO2) and its fiber arrangement were embedded into silicon to enhance triboelectric charge potential. Various analyses were conducted to investigate the relationship between the structure of dielectric layers and device performance. The findings show that doping with CeO2 nanoparticles and nanofibers significantly increases TENGs' power due to the formation of a more effective surface area.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Xu Lu, Kexin Wu, Hongjing Wu, Wenbin Cao, Qiao Zhu, Jing Zhou, Yani Zhang
Summary: In this study, the photoluminescence features of an annealed ZnO nano thin film/silicon heterostructure array were investigated. The PL spectra were closely related to the annealing temperature and covered the visible-near infrared region. The formation mechanism of the PL emissions and the potential of the ZnO/silicon heterostructure array as a NIR-emitting material were analyzed.
Article
Optics
Haiyan Guo, Mai Ibrahim Khaleel, Yia-Chung Chang
Summary: Imaging ellipsometry can aid in studying semitransparent biological cells microscopically and in marker-free nondestructive disease diagnosis; precise locating of the focal plane is crucial for biosensing, and this can be efficiently achieved through edge detection.
Article
Optics
Sheng-Chan Wu, Ya-Chi Liu, Li-Jyuan Lin, Yia-Chung Chang, Hsu-Cheng Hsu
Summary: By studying the laser behavior and simulated modes of CsPbBr3 microwires, it is found that high-order transverse modes can sustain even with significant optical loss, and higher-order modes tend to appear before the fundamental mode on wider microwires. The challenges of sustaining whispering gallery mode in CsPbBr3 microwires highlight the importance of considering lateral dimensions and geometry for future low-threshold wire-based laser device designs.
Article
Multidisciplinary Sciences
Erfu Liu, Jeremiah van Baren, Zhengguang Lu, Takashi Taniguchi, Kenji Watanabe, Dmitry Smirnov, Yia-Chung Chang, Chun Hung Lui
Summary: The study involves measuring the reflection and photoluminescence of monolayer MoSe2 and WSe2 devices to observe gate-tunable exciton polarons. It shows the contradiction between the trion picture and the robust excited states, indicating the presence of exciton-polaron nature in both ground and excited excitonic states in charged monolayer MoSe2 and WSe2.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Mashael M. Altaiary, Erfu Liu, Ching-Tarng Liang, Fu-Chen Hsiao, Jeremiah van Baren, Takashi Taniguchi, Kenji Watanabe, Nathaniel M. Gabor, Yia-Chung Chang, Chun Hung Lui
Summary: We report the observation of Q Gamma intervalley exciton in bilayer WSe2 devices encapsulated by boron nitride. The Q Gamma and QK excitons exhibit different Stark shifts under an out-of-plane electric field. Additionally, both excitons exhibit unusually strong two-phonon replicas.
Article
Nanoscience & Nanotechnology
Chung-Yuan Ren, Yia-Chung Chang
Summary: In this study, we implemented a total-energy minimization scheme using a mixed basis set to relax atomic positions in 2D materials. The mixed basis approach allows for better treatment of charged 2D systems without the need for compensating background charge. We also proposed a simple method to determine the out-of-plane dielectric constants of 2D materials.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Chemistry, Physical
Yao-Wen Chang, Yia-Chung Chang
Summary: In this study, a theoretical method is proposed to investigate the effect of magnetic field on trions in two-dimensional materials. The trion is modeled using a three-particle Schrodinger equation, and the magnetic-field interaction is included using a vector potential in symmetric gauge. By transforming the trion Hamiltonian and using a variational method, the eigenenergy and wavefunction of the trion can be efficiently calculated, and the quantum numbers in magnetic fields can be determined. The method is applied to the study of trion energy levels in hole-doped WSe2 monolayers, and the binding energies and correlation energies of positive trions are analyzed over a range of magnetic fields up to 25 T.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Fu-Chen Hsiao, Arnab Hazari, Yia-Chung Chang, Pallab Bhattacharya, John M. Dallesasse
Summary: This study presents a comprehensive theoretical modeling of photocurrent spectra generated by an In0.91Ga0.09N/ In0.4Ga0.6N disk-in-wire photodiode. The calculated photocurrent spectra show good agreement with experimental data, and the physical mechanisms for the observed prominent peaks are identified and investigated.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Chemistry, Multidisciplinary
David M. T. Kuo, Yia-Chung Chang
Summary: This paper theoretically studies the transport and thermoelectric properties of finite textured graphene nanoribbons (t-GNRs) connected to electrodes with various coupling strengths. The t-GNRs behave as serially coupled graphene quantum dots (SGQDs) due to quantum constriction induced by the indented edges. The bandwidths and gaps of t-GNRs can be engineered by varying the size of the quantum dot and the neck width at indented edges. The effects of defects and junction contact on the electrical conductance, Seebeck coefficient, and electron thermal conductance of t-GNRs are calculated. It is found that SGQDs formed by textured ZGNRs have significantly better electrical power outputs than those of textured ANGRs due to the improved functional shape of the transmission coefficient in t-ZGNRs.
Article
Physics, Applied
Rizwana Khanum, Ching-Hang Chien, Yia-Chung Chang, Rakesh S. S. Moirangthem
Summary: This work investigates the emission of 2 mol. % Li+-doped ZnO microspheres with different sizes under laser excitations. It was found that stimulated emissions were observed in all microspheres under a visible laser excitation source. The threshold pumping power was found to depend on the size of the microresonators. Surprisingly, the WGM peaks of higher intensity were observed in the visible rather than UV spectral region when two microspheres were excited via a 325 nm UV laser. The WGMs in each microsphere exhibit a linear spectral shift with increasing pumping power of the 488 nm excitation laser source.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Sheng-Chan Wu, Chun-Sheng Wu, Ching-Hang Chien, Yu-Wei Zhang, Chung-Xian Yang, Cheng Liu, Ming-Hsien Li, Chen-Fu Lin, Yu-Hao Wu, Bi-Hsuan Lin, Yu-Hsun Chou, Yia-Chung Chang, Peter Chen, Hsu-Cheng Hsu
Summary: A convenient methodology based on temperature-dependent spectroscopy is proposed to investigate the effect of polariton resonant modes on refractive index dispersion. Stable exciton-polaritons and exciton-polarons are confirmed by energy dispersions and the observation of self-trapped exciton-polaron state. The large negative thermal-optic coefficient due to damping effect of exciton-phonon scattering is observed, indicating the potential use of quasi-2D perovskite as a phase compensator for conventional semiconductor materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Condensed Matter
I. Lin Ho, Yia Chung Chang
Summary: The electronic conductance of GaAs nanowires with zincblende-wurtzite heterostructures was investigated using a tight-binding model and non-equilibrium Green's function formulae. The results showed that introducing more wurtzite-type segments into the GaAs nanowires can create isolated conductance channels near the bandgap edge, offering potential applications in mid-infrared optics.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Raj Kumar Paudel, Chung-Yuan Ren, Yia-Chung Chang
Summary: We implemented a semi-empirical pseudopotential (SEP) method to calculate the band structures of graphene and graphene nanoribbons. The SEP includes both local and non-local terms, fitted to first-principles calculations based on DFT. With only a handful of parameters, our method accurately reproduces the band structures obtained by DFT for graphene. We also applied the SEP method to calculate the band structures of graphene nanoribbons, obtaining results close to DFT by adding a correction term to the local pseudopotentials on the nanoribbon edges.
Article
Chemistry, Multidisciplinary
Chung-Yuan Ren, Raj Kumar Paudel, Yia-Chung Chang
Summary: We have developed an efficient computation method based on density functional theory (DFT) for C-60 buckyball, using fully symmetrized basis functions with 120 symmetry operations. Our approach is much faster than the conventional method based on three-dimensional plane waves. It is also significantly faster than existing DFT packages for calculating optical transitions and modeling properties of buckyball crystals.
Article
Materials Science, Multidisciplinary
Yao-Wen Chang, Yia-Chung Chang
Summary: This study proposes a mechanism to explain the quantum anomalous Hall effect and electric-field-induced topological phase transition in AB-stacked MoTe2/WSe2 moire heterobilayers. The Chern band of the QAH state is generated from the inversion of the highest two moire hole bands with opposite valley numbers and a gap opening induced by two Coulomb-interaction-driven magnetic orders. The Neel order ensures the insulating gap, the ferromagnetic order induces the nonzero Chern number, and both orders contribute to time-reversal symmetry breaking.
Article
Chemistry, Multidisciplinary
He-Chun Chou, Xin-Quan Zhang, Shiue-Yuan Shiau, Ching-Hang Chien, Po-Wen Tang, Chun-Te Sung, Yia-Chung Chang, Yi-Hsien Lee, Chi Chen
Summary: Heterojunctions made by laterally stitching two different transition metal dichalcogenide monolayers have unique optical properties that can be characterized by nanoscale-spatial-resolution spectral tools.
