Dual-tip magnetic force microscopy with suppressed influence on magnetically soft samples

Standard magnetic force microscopy (MFM) is considered as a powerful tool used for magnetic field imaging at nanoscale. The method consists of two passes realized by the magnetic tip. Within the first one, the topography pass, the magnetic tip directly touches the magnetic sample. Such contact perturbs the magnetization of the sample explored. To avoid the sample touching the magnetic tip, we present a new approach to magnetic field scanning by segregating the topological and magnetic scans with two different tips located on a cut cantilever. The approach minimizes the disturbance of sample magnetization, which could be a major problem in conventional MFM images of soft magnetic samples. By cutting the cantilever in half using the focused ion beam technique, we create one sensor with two different tips—one tip is magnetized, and the other one is left non-magnetized. The non-magnetized tip is used for topography and the magnetized one for the magnetic field imaging. The method dev...

Mari?n Precner, J?n Fedor, J?n ?olt?s and Vladim?r Cambel

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Chlorin e6–ZnSe/ZnS quantum dots based system as reagent for photodynamic therapy

Stable water-soluble complexes of Cd-free ZnSe/ZnS quantum dots (QDs) and chlorin e6 complexes have been prepared. These complexes have shown approximately 50% intracomplex fluorescence resonance energy transfer from QDs to chlorin e6. The photodynamic therapy (PDT) test of the complexes against the Erlich acsite carcinoma cell culture demonstrated a two-fold enhancement of the cancer cell photodynamic destruction as compared to that of free chlorin e6 molecules. It was shown that the PDT effect was significantly increased due to two factors: the efficient QD–chlorin e6 photoexcitation energy transfer and the improvement of cellular uptake of the photosensitizer in the presence of ZnSe/ZnS QDs.

I V Martynenko, V A Kuznetsova, ? O Orlova, P A Kanaev, V G Maslov, A Loudon, V Zaharov, P Parfenov, Yu K Gun?ko, A V Baranov and A V Fedorov

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Fluorescence Origin of Nanodiamonds

The Journal of Physical Chemistry C

DOI: 10.1021/jp512188x

Jun Xiao, Pu Liu, Lihua Li and Guowei Yang

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Experimental Study of Adsorptive Interactions of Polar and Nonpolar Adsorbates in the Zeolitic Imidazolate Framework ZIF-68 via Pulse Gas Chromatography

The Journal of Physical Chemistry C

DOI: 10.1021/jp509840u

Stijn Van der Perre, Belgin Bozbiyik, Jeroen Lannoeye, Dirk. E. De Vos, Gino V. Baron and Joeri F. M. Denayer

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Air-Exposure Induced Dopant Redistribution and Energy Level Shifts in Spin-Coated Spiro-MeOTAD Films

Chemistry of Materials

DOI: 10.1021/cm504022q

Zafer Hawash, Luis K. Ono, Sonia R. Raga, Michael V. Lee and Yabing Qi

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Increasing the Thermoelectric Figure of Merit of Tetrahedrites by Co-Doping with Nickel and Zinc

Chemistry of Materials

DOI: 10.1021/cm502570b

Xu Lu, Donald T. Morelli, Yi Xia and Vidvuds Ozolins

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Luminescent CuInS2 Quantum Dots by Partial Cation Exchange in Cu2–xS Nanocrystals

Chemistry of Materials

DOI: 10.1021/cm504340h

Ward van der Stam, Anne C. Berends, Freddy T. Rabouw, Tom Willhammar, Xiaoxing Ke, Johannes D. Meeldijk, Sara Bals and Celso de Mello Donega

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On the Origin of Nanochessboard Superlattices in A-Site-Deficient Ca-Stabilized Nd2/3TiO3

Chemistry of Materials

DOI: 10.1021/cm5036985

Feridoon Azough, Demie Kepaptsoglou, Quentin M. Ramasse, Berhnard Schaffer and Robert Freer

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Unraveling the Edge Structures of Platinum(111)-Supported Ultrathin FeO Islands: The Influence of Oxidation State

ACS Nano

DOI: 10.1021/nn505890v

Helene Zeuthen, Wilhelmine Kudernatsch, Lindsay R. Merte, Luis K. Ono, Lutz Lammich, Flemming Besenbacher and Stefan Wendt

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Photojunction Field-Effect Transistor Based on a Colloidal Quantum Dot Absorber Channel Layer

ACS Nano

DOI: 10.1021/nn5053537

Valerio Adinolfi, Illan J. Kramer, André J. Labelle, Brandon R. Sutherland, S. Hoogland and Edward H. Sargent

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Gas Adsorption and Separation in Realistic and Idealized Frameworks of Organic Pillared Graphene: A Comparative Study

The Journal of Physical Chemistry C

DOI: 10.1021/jp511953p

Giovanni Garberoglio, Nicola M. Pugno and Simone Taioli

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Impact of Skeletal Isomerization of Ultrasmall Gold Clusters on Electrochemical Properties: Voltammetric Profiles of Nonspoked Octanuclear Clusters.

The Journal of Physical Chemistry C

DOI: 10.1021/jp511296f

Yutaro Kamei, Neil Robertson, Yukatsu Shichibu and Katsuaki Konishi

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Structures and Electronic Properties of V3Sin– (n = 3–14) Clusters: A Combined Ab Initio and Experimental Study

The Journal of Physical Chemistry C

DOI: 10.1021/jp5112845

Xiaoming Huang, Sheng-Jie Lu, Xiaoqing Liang, Yan Su, Linwei Sai, Zeng-Guang Zhang, Jijun Zhao, Hong-Guang Xu and Weijun Zheng

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Generation of Rashba Spin–Orbit Coupling in CdSe Nanowire by Ionic Liquid Gate

Nano Letters

DOI: 10.1021/nl504225c

Shan Zhang, Ning Tang, Weifeng Jin, Junxi Duan, Xin He, Xin Rong, Chenguang He, Lisheng Zhang, Xudong Qin, Lun Dai, Yonghai Chen, Weikun Ge and Bo Shen

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Evolution of Electronic Structure as a Function of Layer Thickness in Group-VIB Transition Metal Dichalcogenides: Emergence of Localization Prototypes

Nano Letters

DOI: 10.1021/nl503717p

Lijun Zhang and Alex Zunger

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The Smallest Resonator Arrays in Atmosphere by Chip-Size-Grown Nanowires with Tunable Q-factor and Frequency for Subnanometer Thickness Detection

Nano Letters

DOI: 10.1021/nl504135x

Chengming Jiang, Chaolong Tang and Jinhui Song

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High-Efficiency, Low Turn-on Voltage Blue-Violet Quantum-Dot-Based Light-Emitting Diodes

Nano Letters

DOI: 10.1021/nl504328f

Huaibin Shen, Weiran Cao, Nathan T. Shewmon, Chenchen Yang, Lin Song Li and Jiangeng Xue

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Probing the Excitonic States of Site-Controlled GaN Nanowire Quantum Dots

Nano Letters

DOI: 10.1021/nl503949u

Mark J. Holmes, Satoshi Kako, Kihyun Choi, Pawel Podemski, Munetaka Arita and Yasuhiko Arakawa

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Photoluminescence Quenching and Charge Transfer in Artificial Heterostacks of Monolayer Transition Metal Dichalcogenides and Few-Layer Black Phosphorus

ACS Nano

DOI: 10.1021/nn505809d

Jiangtan Yuan, Sina Najmaei, Zhuhua Zhang, Jing Zhang, Sidong Lei, Pulickel M. Ajayan, Boris I. Yakobson and Jun Lou

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