Results 91 to 100 of about 88,499 (309)

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Graphene-enabled sub-picosecond solitons in mode-locked mid-infrared fluoride fiber lasers [PDF]

open access: yesEPJ Web of Conferences
We report on sub-picosecond pulses generation from mode-locked erbium-doped-fiber lasers operating at 2.8 µm and 3.5 µm using graphene-based saturable absorbers. The lasers produce stable 600 fs pulses at 2.8 µm and 700 fs at 3.5 µm.
Hatim Saad   +11 more
doaj   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Ho:CaF2 Solid-state Saturable-absorber Q switch for the 2-μm Tm,Cr:Y3Al5O12 Laser

open access: yes, 2012
[[abstract]]The holmium-doped calcium fluoride 1Ho:CaF22 crystal was shown to be an effective solid-state saturable-absorber Q-switch for a flash-lamp-pumped Tm,Cr:Y3Al5O12 laser at 2.017 μm.
Kuo, Yen-Kuang; Birnbaum, Milton; Unlu, Ferruh; Huang, Man-Fang
core  

Few-layered MoS2 as a saturable absorber for a passively Q-switched Er: YAG laser at 1.6 mu m

open access: yes, 2017
The passively Q-switched Er: YAG laser at 1.6 mu m was achieved with a YAG-based MoS2 saturable absorber (SA) for the first time. The saturable absorption properties of the MoS2 SA near 1.6 mu m were investigated. Under an absorbed pump power of 8.09 W,
Li, Ming   +12 more
core   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

open access: yesAdvanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou   +3 more
wiley   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

open access: yesAdvanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee   +6 more
wiley   +1 more source

Diode-pumped passively mode-locked YVO4/Nd : YVO4 composite crystal laser with LT-In0.25Ga0.75As saturable absorber

open access: yes, 2008
A passively mode-locked all-solid-state YVO4/Nd:YVO4 composite crystal laser was realized with a low temperature (LT) In0.25Ga0.75As semiconductor saturable absorber mirror.
Zhao, S   +4 more
core  

Simultaneous Enhancement of Performance and Stability in Dual‐Gate a‐IGZO Thin‐Film Transistors via Single‐Step Laser Annealing for Capacitor‐Less DRAM

open access: yesAdvanced Functional Materials, EarlyView.
A single‐step laser annealing strategy is presented for dual‐gate a‐IGZO TFTs. The steep thermal gradient induces graded oxygen doping in the channel and simultaneous WOx removal at the contacts, enabling concurrent interface and contact engineering.
Sihyeon Kwon   +9 more
wiley   +1 more source

Er-doped mode-locked fiber laser with WS2/fluorine mica (FM) saturable absorber

open access: yes, 2017
The report presents conventional soliton operation in an anomalous-dispersion fiber laser with a novel WS2 saturable absorber (SA) based on fluorine mica (FM) substrate.
Wang, Yonggang   +8 more
core   +1 more source

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