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Yanpei Tian, Alok Ghanekar, Matt Ricci, Mikhail Hyde, Otto Gregory, Yi Zheng
Radiative thermal transport of metamaterials has begun to play a significant role in thermal science and has great engineering applications. When the key features of structures become comparable to the thermal wavelength at a particular temperature, a narrowband or wideband of wavelengths can be created or shifted in both the emission and reflection spectrum of nanoscale metamaterials. Due to the near-field effect, the phenomena of radiative wavelength selectivity become significant. These effects show strong promise for applications in thermophotovoltaic energy harvesting, nanoscale biosensing, and increased energy efficiency through radiative cooling in the near future...
May 22, 2018: Materials
Lei Zang, Weiyi Sun, Song Liu, Yike Huang, Huatang Yuan, Zhanliang Tao, Yijing Wang
Lithium borohydride (LiBH4) is of particular interest as one of the most promising candidates for solid-state hydrogen storage. Herein, LiBH4 is confined into a novel 2D layered Ti3C2 MXene through one-step solvent method for the first time to improve its hydrogen storage properties. The initial desorption temperature of LiBH4 is significantly reduced, and the de-/hydrogenation kinetics are remarkably enhanced. It is found that the onset temperature of LiBH4@2Ti3C2 hybrid is reduced to172.6 °C and releases 9...
May 22, 2018: ACS Applied Materials & Interfaces
Nicola Ternette, Marloes J M Olde Nordkamp, Julius Muller, Amanda P Anderson, Annalisa Nicastri, Adrian V S Hill, Benedikt M Kessler, Demin Li
The recent development in immune checkpoint inhibitors and chimeric antigen receptor (CAR) T-cells in the treatment of cancer has not only demonstrated the potency of utilising T-cell reactivity for cancer therapy, but has also highlighted the need for developing new approaches to discover targets suitable for such novel therapeutics. Here we analysed the immunopeptidomes of 6 HLA-A2-positive triple negative breast cancer (TNBC) samples by nano-ultra performance liquid chromatography tandem mass spectrometry (nUPLC-MS2 )...
May 22, 2018: Proteomics
Min-Zhuo Cheng, Jing Zhang, Dequan Bao, Xiwei Huang
In this communication, we assembled ordered polystyrene (PS) microsphere array as a template with the drop-coating method, and the oxygen plasma was used to etch the template to adjust the spacing between the PS microspheres. Nano-triangular gold array and silver Nano-pyramid array were obtained by ion beam sputtering to deposit precious metal gold and silver. We observed the surface morphology of Au and Au/Ag composite films by scanning electron microscope and characterized the films by X-ray diffraction and Ultraviolet/visible light spectrophotometer...
May 21, 2018: Electrophoresis
Swati Sharma, Abshar Hasan, Naveen Kumar, Lalit M Pandey
A nano-biosorbent for the removal of methylene blue (MB) was prepared by encapsulating iron oxide nanoparticles (NPs) and Agrobacterium fabrum strain SLAJ731, in calcium alginate. The prepared biosorbent was optimized for the maximum adsorption capacity at pH 11, 160 rpm, and 25 °C. Adsorption kinetics was examined using pseudo-first-order, pseudo-second-order, and intra-particle diffusion (IPD) models. The kinetic data agreed to pseudo-second-order model indicating chemisorption of MB, which was also explained by FTIR analysis...
May 21, 2018: Environmental Science and Pollution Research International
Tongtong Xuan, Sunqi Lou, Junjian Huang, Luyu Cao, Xianfeng Yang, Huili Li, Jing Wang
The microscale composite structure strategy of embedding CsPbBr3 nanocrystals (NCs) in the microscale Cs4PbBr6 matrix (CPB113/CPB416) has successfully demonstrated its ability to resolve the fluorescence quenching of perovskite NCs in the solid agglomeration state due to the loss of quantum confinement. Unfortunately, the controllable synthesis of monodisperse nanoscale composites with bright emission in the solid state remains a great challenge. Here, we present for the first time a novel supersaturated recrystallization process to controllably synthesize monodisperse CPB113/CPB416 composite NCs with bright emission in the solid form, where CsPbBr3 NCs were uniformly embedded in the nano hexagonal Cs4PbBr6 matrix...
May 22, 2018: Nanoscale
Khandmaa Dashnyam, Jung-Hwan Lee, Nandin Mandakhbayar, Guang-Zhen Jin, Hae-Hyoung Lee, Hae-Won Kim
The temporomandibular joint disorder, also known as myofascial pain syndrome, is considered one of the prevalent chronic pain diseases caused by muscle inflammation and cartilage degradation in head and neck, and thus influences even biopsychosocial conditions in a lifetime. There are several current treatment methodologies relieving inflammation and preventing degradation of the joint complex. One of the promising non-surgical treatment methods is an intra-articular injection of drugs such as corticosteroids, analgesics, and anti-depressants...
January 2018: Journal of Tissue Engineering
Yuhang Jiang, James M Fay, Chi-Duen Poon, Natasha Vinod, Yuling Zhao, Kristin Bullock, Si Qin, Devika S Manickam, Xiang Yi, William A Banks, Alexander V Kabanov
Brain-derived neurotrophic factor (BDNF) is identified as a potent neuroprotective and neuroregenerative agent for many neurological diseases. Regrettably, its delivery to the brain is hampered by poor serum stability and rapid brain clearance. Here, a novel nanoformulation is reported composed of a bio-compatible polymer, poly(ethylene glycol)- b -poly(L-glutamic acid) (PEG-PLE), that hosts the BDNF molecule in a nanoscale complex, termed here Nano-BDNF. Upon simple mixture, Nano-BDNF spontaneously forms uniform spherical particles with a core-shell structure...
February 7, 2018: Advanced Functional Materials
Yongqiang Tan, Heng Luo, Xiaosong Zhou, Shuming Peng, Haibin Zhang
The microstructure dependent electromagnetic interference (EMI) shielding properties of nano-layered Ti3 AlC2 ceramics were presented in this study by comparing the shielding properties of various Ti3 AlC2 ceramics with distinct microstructures. Results indicate that Ti3 AlC2 ceramics with dense microstructure and coarse grains are more favourable for superior EMI shielding efficiency. High EMI shielding effectiveness over 40 dB at the whole Ku-band frequency range was achieved in Ti3 AlC2 ceramics by microstructure optimization, and the high shielding effectiveness were well maintained up to 600 °C...
May 21, 2018: Scientific Reports
Patric Eberle, Christian Höller, Philipp Müller, Maarit Suomalainen, Urs F Greber, Hadi Eghlidi, Dimos Poulikakos
Investigating biological and synthetic nanoscopic species in liquids, at the ultimate resolution of single entity, is important in diverse fields1-5 . Progress has been made6-10 , but significant barriers need to be overcome such as the need for intense fields, the lack of versatility in operating conditions and the limited functionality in solutions of high ionic strength for biological applications. Here, we demonstrate switchable electrokinetic nanovalving able to confine and guide single nano-objects, including macromolecules, with sizes down to around 10 nanometres, in a lab-on-chip environment...
May 21, 2018: Nature Nanotechnology
Haomin Wang, Le Wang, Devon S Jakob, Xiaoji G Xu
Scattering-type scanning near-field optical microscopy (s-SNOM) enables nanoscale spectroscopic imaging and has been instrumental for many nano-photonic discoveries and in situ studies. However, conventional s-SNOM techniques with atomic force microscopy tapping mode operation and lock-in detections do not provide direct tomographic information with explicit tip-sample distance. Here, we present a non-traditional s-SNOM technique, named peak force scattering-type scanning near-field optical microscopy (PF-SNOM), by combination of peak force tapping mode and time-gated light detection...
May 21, 2018: Nature Communications
Yoshihiro Hagiwara, Masaru Mori, Kenji Kanazawa, Akira Ando, Yutaka Yabe, Masashi Koide, Takuya Sekiguchi, Nobuyuki Itaya, Masahiro Tsuchiya, Eiji Itoi
BACKGROUND: The etiology of frozen shoulder (FS) is unclear. Accordingly, this study used a label-free quantitative shotgun proteomic approach to elucidate the pathogenesis of FS based on protein expression levels. METHODS: Tissue samples from the rotator interval (RI), middle glenohumeral ligament (MGHL), and anterior-inferior glenohumeral ligament (IGHL) were collected from 12 FSs with severe stiffness and 7 shoulders with a rotator cuff tear (RCT) as controls...
May 18, 2018: Journal of Shoulder and Elbow Surgery
Juan Zheng, Cuiming Lu, Junlong Huang, Luyi Chen, Chuyi Ni, Xintong Xie, Fang Zhu, Dingcai Wu, Gangfeng Ouyang
Novel powdery polymer aerogel (PPA) prepared via the (micro)emulsion polymerization and the following hyper crosslinking reaction was fabricated as stationary phase of capillary column for the first time. Due to its powdery morphology, unique 3D nano-network structure, high surface area and good thermostability, the PPA-coated capillary column demonstrated high-resolution chromatographic separation towards nonpolar and weakly polar organic compounds, including benzene series, n-alkanes, ketone mixtures and trichlorobenzenes...
August 15, 2018: Talanta
Melina Yarbakht, Maryam Nikkhah, Ahmad Moshaii, Karina Weber, Christian Matthäus, Dana Cialla-May, Jürgen Popp
Nowadays, cancer is one of the most dangerous and deadly disease all around the world. Cancer that is diagnosed at early stages is more likely to be treated successfully. Treatment of progressed cancer is very difficult, and generally surviving rates are much lower. Therefore, much research has been focused on developing non-invasive methods for detection of cancer and monitoring of its progress. Within this contribution, we present a novel strategy for selective isolation and detection of breast cancer cell lines (MCF-7 and BT-20) based on surface enhanced Raman scattering (SERS)...
August 15, 2018: Talanta
Flavio Della Pelle, Claudia Angelini, Manuel Sergi, Michele Del Carlo, Alessia Pepe, Dario Compagnone
An electrochemical screening assay for the detection of phenyl carbamates (i.e. carbaryl, carbofuran, isoprocarb and fenobucarb) was developed and applied to grains samples (i.e. durum wheat, soft wheat and maize). Nano carbon black (CB) was strategically employed to realize an effective, reproducible, fouling resistant, low cost, delocalisable screen printed sensor (CB-SPE). CB-SPEs morphology (SEM and FEM) and electrochemical property (CV and EIS) were studied. The final pesticides analysis protocol consist of: (i) extraction of the analyte (just by mixing), (ii) alkaline hydrolysis (10 min R...
August 15, 2018: Talanta
M S Attia, A O Youssef, Ziya A Khan, M N Abou-Omar
A simple, precise and sensitive method in which, a nano optical sensor binuclear Pt-2-aminobenzimidazole-bipyridine, Pt(abi)(bpy) complex doped in sol gel is used for the early diagnosis of liver cancer. The idea depends on the assessment of the concentration of alpha fetoprotein (AFP) in the serum samples of different liver patients. The nano binuclear Pt(abi)(bpy) has strong emission spectrum upon excitation at 380 nm in distilled water. The assessment of alpha fetoprotein (AFP) depends on the quenching of the emission spectrum of the optical sensor at 610 nm in water by the alpha fetoprotein (AFP)...
August 15, 2018: Talanta
Gautam Sethi, Muthu K Shanmugam, Sudha Warrier, Myriam Merarchi, Frank Arfuso, Alan Prem Kumar, Anupam Bishayee
Novel and alternative options are being adopted to combat the initiation and progression of human cancers. One of the approaches is the use of molecules isolated from traditional medicinal herbs, edible dietary plants and seeds that play a pivotal role in the prevention/treatment of cancer, either alone or in combination with existing chemotherapeutic agents. Compounds that modulate these oncogenic processes are potential candidates for cancer therapy and may eventually make it to clinical applications. Diosgenin is a naturally occurring steroidal sapogenin and is one of the major bioactive compounds found in dietary fenugreek ( Trigonella foenum-graecum ) seeds...
May 19, 2018: Nutrients
Wu-Jian Long, Changle Fang, Jingjie Wei, Haodao Li
Graphene oxide (GO) is a potential material to be used as a nano-reinforcement in cement matrix. However, a prerequisite for GO to fulfill its function in the cement matrix is homogeneous dispersion. In this study, the effects of three different dispersing agents (DAs), including polycarboxylate-based high range water reducer (P-HRWR), naphthalene-based high range water reducer (N-HRWR), and air entraining agent (AEA) on the dispersion of GO in aqueous solution, simulated concrete pore solution (SCPS), and suspension of cement pastes were sequentially investigated...
May 18, 2018: Materials
Bilal Ahmed, Mohammad Saghir Khan, Javed Musarrat
The present study for the first time demonstrated the interactions of metal oxide (MO) nano-pollutants (CuO and Al2 O3 -NPs) with tissues and cellular DNA of tomato plants grown in soil sand: silt: clay (667:190:143) and Hoagland-hydroponic system and assessed the hazardous effects of NPs on cell physiology and biochemistry. Results of SEM equipped with EDX revealed attachment of variably shaped CuO-NPs (18 nm) and Al2 O3 -NPs (21 nm) on roots, and internalization followed by translocation in plants by ICP-MS and TEM...
May 18, 2018: Environmental Pollution
Tim Grieb, Florian F Krause, Marco Schowalter, Dennis Zillmann, Roman Sellin, Knut Müller-Caspary, Christoph Mahr, Thorsten Mehrtens, Dieter Bimberg, Andreas Rosenauer
Strain analyses from experimental series of nano-beam electron diffraction (NBED) patterns in scanning transmission electron microscopy are performed for different specimen tilts. Simulations of NBED series are presented for which strain analysis gives results that are in accordance with experiment. This consequently allows to study the relation between measured strain and actual underlying strain. A two-tilt method which can be seen as lowest-order electron beam precession is suggested and experimentally implemented...
April 12, 2018: Ultramicroscopy
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