Publications

Almajhadi, MA., Uddin, SMA., Wickramasinghe, HK.

Observation of nanoscale opto-mechanical molecular damping as the origin of spectroscopic contrast in photo induced force microscopy

Infrared photoinduced force microscopy (IR-PiFM) is a scanning probe spectroscopic technique that maps sample morphology and chemical properties on the nanometer (nm)-scale. Fabricated samples with nm periodicity such as self-assembly of block copolymer films can be chemically characterized by IR-PiFM with relative ease. Despite the...

Published 2020, Nat Commun, 11(1), Page 5691. DOI: 10.1038/s41467-020-19067-3

Chen, L., Mao, S., Wang, P., Yao, Z., Du, Z., Zhu, Z., Belfiore, L., Tang, J.

Visible Light Driven Hot‐Electron Injection by Pd Nanoparticles: Fast Response in Metal–Semiconductor Photodetection

Hot‐electron injection induced by plasmon decay enables ultrafast electron transfer in femtosecond scale and therefore endows metallic nanoparticles (MNPs) promising potentials in high‐speed optoelectronics. With much higher density of states next to its Fermi level, palladium (Pd) can more efficiently launch hot electrons according to...

Published 2020, Adv. Optical Mater., Page 2001505. DOI: 10.1002/adom.202001505

Song, J., Ye, L., Li, C., Xu, J., Chandrabose, S., Weng, K., Cai, Y., Xie, Y., O'Reilly, P., Chen, K., Zhou, J., Zhou, Y., Hodgkiss, JM., Liu, F., Sun, Y.

An Optimized Fibril Network Morphology Enables High-Efficiency and Ambient-Stable Polymer Solar Cells

Morphological stability is crucially important for the long-term stability of polymer solar cells (PSCs). Many high-efficiency PSCs suffer from metastable morphology, resulting in severe device degradation. Here, a series of copolymers is developed by manipulating the content of chlorinated benzodithiophene-4,8-dione (T1-Cl) via a random copolymerization...

Published 2020, Adv Sci (Weinh), 7(18), Page 2001986. DOI: 10.1002/advs.202001986

Xu, C., Bo, Z., Wu, S., Wen, Z., Chen, J., Luo, T., Lee, E., Xiong, G., Amal, R., Wee, A., Yan, J., Cen, K., Fisher, T., Ostrikov, K.

Vertical graphene nano-antennas for solar-to-hydrogen energy conversion

Effective separation and transfer of photogenerated charge carriers are common issues in solar energy conversion. Strong localized electric fields near functional nanostructures reduce charge recombination and boost energy efficiency and photocatalytic activity. However, common metal-based photocatalytic systems on conducting supports under-utilize infrared (IR) light energy,...

Published 2020, Solar Energy, 208, Pages 379–387. DOI: 10.1016/j.solener.2020.07.069

Chen, Q., Zhang, Y., Liu, S., Han, T., Chen, X., Xu, Y., Meng, Z., Zhang, G., Zheng, X., Zhao, J., Cao, G., Liu, G.

Switchable Perovskite Photovoltaic Sensors for Bioinspired Adaptive Machine Vision

PiFM images of the CsFAMA film, sequentially recorded in the a) pristine state, b–f) after being subjected to voltage stressing with the amplitude of −1 to −0.2 V and i–n) after being subjected to voltage stressing with the amplitude of 0 to 1 V and a ramping...

Published 2020, Advanced Intelligent Systems, 2(9), Page 2000122. DOI: 10.1002/aisy.202000122

Mitrovic, A., Nagel, W., Leang, K., Clayton, G.

Closed-loop Range-Based Control of Dual-Stage Nanopositioning Systems

In this paper, a closed-loop control framework for dual-stage nanopositioning systems is presented that allows the user to allocate control efforts to the individual actuators based on their range capabilities. Recent work by the authors has focused on range-based control of dual-stage actuators implemented as...

Published 2020, IEEE/ASME Trans. Mechatron., Pages 1–1. DOI: 10.1109/tmech.2020.3020047

Allender, CJ., Bowen, JL., Celorrio, V., Davies-Jones, JA., Davies, PR., Guan, S., O'Reilly, P., Sankar, M.

The Role of Growth Directors in Controlling the Morphology of Hematite Nanorods

The control of the growth of hematite nanoparticles from iron chloride solutions under hydrothermal conditions in the presence of two different structure promoters has been studied using a range of both structural and spectroscopic techniques including the first report of photo induced force microscopy (PiFM)...

Published 2020, Nanoscale Res Lett, 15(1), Page 161. DOI: 10.1186/s11671-020-03387-w

Zhang, X., Jiang, Q., Wang, J., Tang, J.

Black phosphorous quantum dots as an effective interlayer modifier in polymer solar cells

Black phosphorus quantum dots (BPQDs), as 2D van der Waals crystals, possess remarkable electronic and optoelectronic properties. Their excellent ultra-high mobility and thickness-dependent tunable direct bandgap can meet well the needs of polymer solar cells (PSCs) for adjustable energy levels in different active layer systems....

Published 2020, Solar Energy, 206, Pages 670–676. DOI: 10.1016/j.solener.2020.06.007

Jahng, J., Son, JG., Kim, H., Park, J., Lee, TG., Lee, ES.

Direct Chemical Imaging of Ligand-Functionalized Single Nanoparticles by Photoinduced Force Microscopy

Chemical characterizations of biochemically functionalized single nanoparticles are necessary to optimize the nanoparticle surface functionality in recently advanced nanobiological applications but have not yet been fully explored because of technical difficulties. Exploiting the photoinduced force exerted on a light-illuminated nanoscale tip, nanoscale mid-infrared hyperspectral images...

Published 2020, J Phys Chem Lett, 11(14), Pages 5785–5791. DOI: 10.1021/acs.jpclett.0c01536

Yu, W., Fu, HJ., Mueller, T., Brunschwig, BS., Lewis, NS.

Atomic force microscopy: Emerging illuminated and operando techniques for solar fuel research

Integrated photoelectrochemical devices rely on the synergy between components to efficiently generate sustainable fuels from sunlight. The micro- and/or nanoscale characteristics of the components and their interfaces often control critical processes of the device, such as charge-carrier generation, electron and ion transport, surface potentials, and...

Published 2020, J Chem Phys, 153(2), Page 020902. DOI: 10.1063/5.0009858

Kim, B., Khan, R., Fast, A., Fishman, D., Potma, E.

Nanoscale Excitation Dynamics of Carbon Nanotubes Probed with Photoinduced Force Microscopy

* You have cookies disabled in your browser. You need to reset your browser to accept cookies or to ask you if you want to accept cookies. * Your browser asks you whether you want to accept cookies and you declined. To accept cookies from...

Published 2020, J. Phys. Chem. C, 124(21), Pages 11694–11700. DOI: 10.1021/acs.jpcc.0c01776

Hafermann, M., Zapf, M., Ritzer, M., Printschler, A., Luo, Y., Ambrosio, A., Wilson, W., Ronning, C.

Grayscale Nanopatterning of Phase-Change Materials for Subwavelength-Scaled, Inherently Planar, Nonvolatile, and Reconfigurable Optical Devices

Published 2020, ACS Appl. Nano Mater., 3(5), Pages 4486–4493. DOI: 10.1021/acsanm.0c00580

Pan, Y., Chu, L., Liu, J., Lv, B., Belfiore, L., Tang, J.

Precise Control of Copper-Localized Surface Plasmon Resonance in the Near Infrared Region for Enhancement of Up-Conversion Luminescence

The surface plasmon resonance of copper in the near infrared region provides a novel method for enhancement of up-conversion luminescence compared to using gold and silver, as the former grants significant cost savings. In this study, we made a flat Cu film covered TiO2 to...

Published 2020, Metals, 10(5), Page 628. DOI: 10.3390/met10050628

Chen, Z., Chen, X., Qiu, B., Zhou, G., Jia, Z., Tao, W., Li, Y., Yang, YM., Zhu, H.

Ultrafast Hole Transfer and Carrier Transport Controlled by Nanoscale-Phase Morphology in Nonfullerene Organic Solar Cells

Nonfullerene acceptors (NFAs) have attracted great attention in high-efficiency organic solar cells (OSCs). While the effect of molecular properties including structures and energetics on charge transfer has been extensively investigated, the effect of macroscopic-phase properties is yet to be revealed. Here we have performed a...

Published 2020, J Phys Chem Lett, 11(9), Pages 3226–3233. DOI: 10.1021/acs.jpclett.0c00919

Ping, H., Poudel, L., Xie, H., Fang, W., Zou, Z., Zhai, P., Wagermaier, W., Fratzl, P., Wang, W., Wang, H., O'Reilly, P., Ching, WY., Fu, Z.

Synthesis of monodisperse rod-shaped silica particles through biotemplating of surface-functionalized bacteria

Mesoporous silica particles of controlled size and shape are potentially beneficial for many applications, but their usage may be limited by the complex procedure of fabrication. Biotemplating provides a facile approach to synthesize materials with desired shapes. Herein, a bioinspired design principle is adopted through...

Published 2020, Nanoscale, 12(16), Pages 8732–8741. DOI: 10.1039/d0nr00669f

Sun, C., Pan, F., Qiu, B., Qin, S., Chen, S., Shang, Z., Meng, L., Yang, C., Li, Y.

D–A Copolymer Donor Based on Bithienyl Benzodithiophene D-Unit and Monoalkoxy Bifluoroquinoxaline A-Unit for High-Performance Polymer Solar Cells

Published 2020, Chem. Mater., 32(7), Pages 3254–3261. DOI: 10.1021/acs.chemmater.0c00459

Liu, J., Chu, L., Yao, Z., Mao, S., Zhu, Z., Lee, J., Wang, J., Belfiore, L., Tang, J.

Fabrication of Au network by low-degree solid state dewetting: Continuous plasmon resonance over visible to infrared region

Solid state dewetting (SSD) of thin-film can trigger morphology evolution from continuous film to isolated nanostructures over percolation threshold. However, the Au thin-film fabricated by low-degree SSD, namely Au network nanostructures, showed a wider plasmon absorption over visible and mid-infrared region as compared to the...

Published 2020, Acta Materialia, 188, Pages 599–608. DOI: 10.1016/j.actamat.2020.02.050

Guo, D., Nagel, W., Clayton, G., Leang, K.

Spatial-Temporal Trajectory Redesign for Dual-Stage Nanopositioning Systems With Application in AFM

This article focuses on trajectory redesign for dual-stage nanopositioning systems, where speed, range, and resolution are considered. Dual-stage nanopositioning systems are becoming increasingly popular due to their unique ability to achieve long-range and high-speed operation. Conventional trajectory assignment methods for dual-stage systems commonly consider frequency...

Published 2020, IEEE/ASME Trans. Mechatron., 25(2), Pages 558–569. DOI: 10.1109/tmech.2020.2971755

Li, J., Jahng, J., Pang, J., Morrison, W., Li, J., Lee, ES., Xu, JJ., Chen, HY., Xia, XH.

Tip-Enhanced Infrared Imaging with Sub-10 nm Resolution and Hypersensitivity

Here we demonstrate sub-10 nm spatial resolution sampling of a volume of ∼360 molecules with a strong field enhancement at the sample-tip junction by implementing noble metal substrates (Au, Ag, Pt) in photoinduced force microscopy (PiFM). This technique shows the versatility and robustness of PiFM...

Published 2020, J Phys Chem Lett, 11(5), Pages 1697–1701. DOI: 10.1021/acs.jpclett.0c00129

Huey, D.

2019 MRS Fall Meeting featured a variety of outreach, career, and professional development offerings

The MRS AWARDS AND RECOGNITION PROGRAM strives to acknowledge outstanding contributors to the progress of materials research and to recognize their accomplishments. At the Fall Meeting, MRS recognized JERRY D. TERSOFF, IBM T.J. Watson Research Center, with the Von Hippel Award for advancing the understanding...

Published 2020, MRS Bull., 45(2), Pages 143–145. DOI: 10.1557/mrs.2020.54

Have you tried searching?

Stay on top!

Announcing Vista 300