7.8k citations · 12.5k across the 23 of their papers we have counts for
23 papers
Real-time, noise and drift resilient formaldehyde sensing at room temperature with aerogel filaments
Zhuo Chen, Binghan Zhou, Mingfei Xiao +5
Formaldehyde, a known human carcinogen, is a common indoor air pollutant. However, its real-time and selective recognition from interfering gases remains challenging, especially fo…
Miniaturized Computational Photonic Molecule Spectrometer
Yujia Zhang, Xuhan Guo, Tom Albrow-Owen +5
Miniaturized spectrometry system is playing an essential role for materials analysis in the development of in-situ or portable sensing platforms across research and industry. Howev…
Engineering symmetry breaking in two-dimensional layered materials
Luojun Du, Tawfique Hasan, Andres Castellanos-Gomez +4
Symmetry breaking in two-dimensional layered materials plays a significant role in their macroscopic electrical, optical, magnetic and topological properties, including but not lim…
Lattice dynamics, phonon chirality and spin-phonon coupling in 2D itinerant ferromagnet Fe3GeTe2
Luojun Du, Jian Tang, Yanchong Zhao +13
Fe3GeTe2 has emerged as one of the most fascinating van der Waals crystals due to its two-dimensional (2D) itinerant ferromagnetism, topological nodal lines and Kondo lattice behav…
Q-switched Dy:ZBLAN fiber lasers beyond 3 μm: comparison of pulse generation using acousto-optic modulation and inkjet-printed black phosphorus
R. I. Woodward, M. R. Majewski, N. Macadam +4
We report high-energy mid-infrared pulse generation by Q-switching of dysprosium-doped fiber lasers for the first time. Two different modulation techniques are demonstrated. Firstl…
Conformal printing of graphene for single and multi-layered devices on to arbitrarily shaped 3D surfaces
Leonard W. T. Ng, Xiaoxi Zhu, Guohua Hu +6
Printing has drawn a lot of attention as a means of low per-unit cost and high throughput patterning of graphene inks for scaled-up thin-form factor device manufacturing. However,…
Wavelength tunable soliton rains in a nanotube-mode locked Tm-doped fiber laser
B. Fu, D. Popa, Z. Zhao +4
We report soliton rains in a tuneable Tm-doped fiber laser mode locked by carbon nanotubes. We also detect their second- and third-harmonic. We achieve a tuneability of over 56nm,…
Scalar Nanosecond Pulse Generation in a Nanotube Mode-Locked Environmentally Stable Fiber Laser
R. I. Woodward, E. J. R. Kelleher, D. Popa +5
We report an environmentally stable nanotube mode-locked fibre laser producing linearly-polarized, nanosecond pulses. A simple all-polarization-maintaining fibre ring cavity is use…
Two-dimensional material based "field-effect CCD"
Hongwei Guo, Wei Li, Jianhang Lv +9
Charge-coupled device (CCD), along with the complementary metal-oxide-semiconductor (CMOS), is one of the major imaging technologies. Traditional CCDs rely on the charge transfer b…
Ultra-strong nonlinear optical processes and trigonal warping in MoS layers
A. Säynätjoki, L. Karvonen, H. Rostami +11
We report ultra-strong high-order nonlinear multiphoton processes in monolayer MoS (1L-MoS): the third harmonic is thirty times stronger than the second harmonic, and the f…
Theory of edge-state optical absorption in two-dimensional transition metal dichalcogenide flakes
Maxim Trushin, Edmund J. R. Kelleher, Tawfique Hasan
We develop an analytical model to describe sub-bandgap optical absorption in two-dimensional semiconducting transition metal dichalcogenide (s-TMD) nanoflakes. The material system…
Surfactant-aided exfoliation of molydenum disulphide for ultrafast pulse generation through edge-state saturable absorption
Richard C. T. Howe, Robert I. Woodward, Guohua Hu +3
We use liquid phase exfoliation to produce dispersions of molybdenum disulphide (MoS2) nanoflakes in aqueous surfactant solutions. The chemical structures of the bile salt surfacta…
Wideband saturable absorption in few-layer molybdenum diselenide (MoSe2) for Q-switching Yb-, Er- and Tm-doped fiber lasers
R. I. Woodward, R. C. T. Howe, T. H. Runcorn +4
We fabricate a free-standing molybdenum diselenide (MoSe2) saturable absorber by embedding liquid-phase exfoliated few-layer MoSe2 flakes into a polymer film. The MoSe2-polymer com…
1.5 GHz Pulse Generation From a Monolithic Waveguide Laser With a Graphene-Film Saturable Output Coupler
R. Mary, S. J. Beecher, G. Brown +9
We fabricate a saturable absorber mirror by coating a graphene film on an output coupler mirror. This is then used to obtain Q-switched mode-locking from a diode pumped linear cavi…
Production, Processing and Placement of Graphene and Two Dimensional Crystals
F. Bonaccorso, A. Lombardo, T. Hasan +3
Graphene is at the centre of an ever growing research effort due to its unique properties, interesting for both fundamental science and applications. A key requirement for applicat…
Tm-doped fiber laser mode-locked by graphene-polymer composite
M. Zhang, E. J. R. Kelleher, F. Torrisi +7
We demonstrate mode-locking of a thulium-doped fiber laser operating at 1.94μm, using a graphene-based saturable absorber. The laser outputs 3.6ps pulses, with~0.4nJ energy and an…
Ink-Jet Printed Graphene Electronics
F. Torrisi, T. Hasan, W. Wu +9
We demonstrate ink-jet printing as a viable method for large area fabrication of graphene devices. We produce a graphene-based ink by liquid phase exfoliation of graphite in N-Meth…
Graphene Q-switched, tunable fiber laser
D. Popa, Z. Sun, T. Hasan +3
We demonstrate a wideband-tunable Q-switched fiber laser exploiting a graphene saturable absorber. We get ~2us pulses, tunable between 1522 and 1555nm with up to~40nJ energy. This…
Sub 200fs pulse generation from a graphene mode-locked fiber laser
D. Popa, Z. Sun, F. Torrisi +3
Ultrafast fiber lasers with short pulses and broad bandwidth are in great demand for a variety of applications, such as spectroscopy, biomedical diagnosis and optical communication…
Graphene Photonics and Optoelectronics
F. Bonaccorso, Z. Sun, T. Hasan +1
The richness of optical and electronic properties of graphene attracts enormous interest. Graphene has high mobility and optical transparency, in addition to flexibility, robustnes…
Wideband tunable, graphene-mode locked, ultrafast laser
Z. Sun, D. Popa, T. Hasan +5
We report a tunable ultrafast fiber laser mode-locked with a graphene saturable absorber. The linear dispersions of the Dirac electrons in graphene enable wideband tunability. We g…
Graphene Mode-Locked Ultrafast Laser
Z. Sun, T. Hasan, F. Torrisi +6
Graphene is at the center of a significant research effort. Near-ballistic transport at room temperature and high mobility make it a potential material for nanoelectronics. Its ele…
Exciton energy transfer in nanotube bundles
P. H. Tan, A. G. Rozhin, T. Hasan +4
Photoluminescence is commonly used to identify the electronic structure of individual nanotubes. But, nanotubes naturally occur in bundles. Thus, we investigate photoluminescence o…