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[Evolutionary Nanomaterials & Nanodevices] Yangjin Lee, Jahyun Koo, Sol Lee, Jun-Yeong Yoon, Kangwon Kim, Myeongjin Jang, Jeongsu Jang, Jeongheon Choe, Bao-Wen Li, Chinh Tam Le, Farman Ullah, Yong Soo Kim, Jun Yeon Hwang, Won Chul Lee, Rodney S. Ruoff, Hyeonsik Cheong, Jinwoo Cheon, Hoonkyung Lee,* and Kwanpyo Kim*
Universal Oriented van der Waals Epitaxy of 1D Cyanide Chains on Hexagonal 2D Crystals
Advanced Science
 (Dec 19, 2019)

The atomic or molecular assembly on 2D materials through the relatively weak van der Waals interaction is quite different from the conventional heteroepitaxy and may result in unique growth behaviors. Here, it is shown that straight 1D cyanide chains display universal epitaxy on hexagonal 2D materials. A universal oriented assembly of cyanide crystals (AgCN, AuCN, and Cu0.5Au0.5CN) is observed, where the chains are aligned along the three zigzag lattice directions of various 2D hexagonal crystals (graphene, h‐BN, WS2, MoS2, WSe2, MoSe2, and MoTe2). The potential energy landscape of the hexagonal lattice induces this preferred alignment of 1D chains along the zigzag lattice directions, regardless of the lattice parameter and surface elements as demonstrated by first‐principles calculations and parameterized surface potential calculations.

[Evolutionary Nanomaterials & Nanodevices] Yangjin Lee, Sol Lee, Jun-Yeong Yoon, Jinwoo Cheon, Hu Young Jeong, *Kwanpyo Kim*
Fabrication and Imaging of Monolayer Phosphorene with Preferred Edge Configurations via Graphene-Assisted Layer-by-Layer Thinning
Nano Letters
 (Dec 2, 2019)

Phosphorene, a monolayer of black phosphorus (BP), is an elemental two-dimensional material with interesting physical properties, such as high charge carrier mobility and exotic anisotropic in-plane properties. To fundamentally understand these various physical properties, it is critically important to conduct an atomic-scale structural investigation of phosphorene, particularly regarding various defects and preferred edge configurations. However, it has been challenging to investigate mono- and few-layer phosphorene because of technical difficulties arising in the preparation of a high-quality sample and damages induced during the characterization process. Here, we successfully fabricate high-quality monolayer phosphorene using a controlled thinning process with transmission electron microscopy and subsequently perform atomic-resolution imaging.

[Evolutionary Nanomaterials & Nanodevices] Jiuk Jang, Hyobeom Kim, Sangyoon Ji, Ha Jun Kim, Min Soo Kang, Tae Soo Kim, Jong-eun Won, Jae-Hyun Lee, Jinwoo Cheon*, Kibum Kang*, Won Bin Im*,Jang-Ung Park*
Mechanoluminescent, Air-Dielectric MoS2 Transistors as Active-Matrix Pressure Sensors for Wide Detection Ranges from Footsteps to Cellular Motions
Nano Lett.
 (Oct 22, 2019)

MoS2 transistor, Pressure sensor, Cellular motion

[Nanobio Interface] Yoonhee Jin, Jung-uk Lee, Eunna Chung, Kisuk Yang, Jin Kim, Ji-wook Kim, Jong Seung Lee, Ann-Na Cho, Taekyu Oh, Jae-Hyun Lee, Seung-Woo Cho* and Jinwoo Cheon*
Magnetic Control of Axon Navigation in Reprogrammed Neurons
Nano Lett., 19(9), 6517-6523
 (Aug 28, 2019)

magnetic nanoparticles, receptor clustering, induced neuronal cells, axon guidance, neural network

[Evolutionary Nanomaterials & Nanodevices] Woon Hyung Cheong, Byungkook Oh, Se-Hee Kim, Jiuk Jang, Sangyoon Ji, Seunghee Lee, Jinwoo Cheon, Seunghyup Yoo, Sang-Young Lee, Jang -Ung Park
Platform for wireless pressure sensing with built-in battery and instant visualization
Nano Energy, 62, 230-238
 (May 15, 2019)

Wireless platform, Pressure sensor, portable device, smartphones

[Nanobio Interface] Minsuk Kwak, Wonji Gu, Heekyung Jeong, Hyunjung Lee, Jung-uk Lee, Minji An, Yong Ho Kim, Jae-Hyun Lee, Jinwoo Cheon* and Young-wook Jun*
"Small, Clickable, and Monovalent Magnetofluorescent Nanoparticles Enable Mechanogenetic Regulation of Receptors in a Crowded Live-Cell Microenvironment"
Nano Lett., 19 (6), 3761-3769
 (Apr 30, 2019)

Magnetic nanoparticles, single-cell perturbation biology, cell labeling, steric crowding, cell surface microenvironment

[Evolutionary Nanomaterials & Nanodevices] Taehoon Kim, Gwangmook Kim, Hyeohn Kim, Hong-Jib Yoon, Taeseong Kim, Yohan Jun, Tae-Hyun Shin, Shinill Kang, Jinwoo Cheon, Dosik Hwang, Byung-wook Min and Wooyoung Shim*
"Megahertz-wave-transmitting conducting polymer electrode for device-to-device integration"
Nat. commun., 10, 653
 (Feb 8, 2019)

The ideal combination of high optical transparency and high electrical conductivity, especially at v...

[Evolutionary Nanomaterials & Nanodevices] Roman Kempt, Agniezka Kuc, Jae Hyo Han, Jinwoo Cheon, Thomas Heine*
"2D Crystals in Three Dimensions: Electronic Decoupling of Single-layered Platelets in Colloidal Nanoparticles"
Small, 14, 1803910
 (Nov 5, 2018)

2D crystals, single sheets of layered materials, often show distinct proper-ties desired for optoele...

[Nanobio Interface] Tae-Hyun Shin, Sunghwi Kang, Sohyeon Park, Jin-sil Choi, Pan Ki Kim, and Jinwoo Cheon*
"A magnetic resonance tuning sensor for the MRI detection of biological targets"
Nat. Protoc.​, 13, 2664-2684
 (Oct 22, 2018)

Sensors that detect specific molecules of interest in a living organism can be useful tools for stud...

[Evolutionary Nanomaterials & Nanodevices] Jae Hyo Han, Hong Ki Kim, Bongkwan Baek, Jeonghee Han, Hyun S. Ahn, Mu-Hyun Baik*, and Jinwoo Cheon*
"Activation of the Basal Plane in Two Dimensional Transition Metal Chalcogenide Nanostructures"
​J. Am. Chem. Soc., 140 (42), 13663-13671
 (Oct 11, 2018)

Achieving a molecular level understanding of chemical reactions on the surface of solid-state nanoma...

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