CARBON6 9 2 0 1 4

Good Essays
CARBON

6 9 ( 2 0 1 4 ) 6 3 8 –6 4 0

Available at www.sciencedirect.com

ScienceDirect journal homepage: www.elsevier.com/locate/carbon

Letter to the Editor

Carbon nanodots with strong nonlinear optical response Dezhi Tan a, Yuya Yamada b, Shifeng Zhou c, Yasuhiko Shimotsuma b, Kiyotaka Miura b,
Jianrong Qiu a,c,* a State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou,
Zhejiang 310027, PR China b Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan c State Key Laboratory of Luminescence Materials and Devices and the Institute of Optical Communication Materials, South China University of Technology, Guangzhou, Guangdong 510640, PR China

A R T I C L E I N F O

A B S T R A C T

Article history:

The carbon nanodots (CNDs) were synthesized by a simple method of femtosecond laser

Received 14 November 2013

ablation of bagasse in ethanol. Strong optical limiting effects of as-prepared CNDs to

Accepted 19 December 2013

800 nm femtosecond laser pulses were observed with the threshold of 74 mJ/cm2. The

Available online 26 December 2013

strong two photon absorption of CNDs is responsible for the optical limiting response.
The nonlinear coefficient was determined by the open-aperture Z-scan technique.
Ó 2013 Elsevier Ltd. All rights reserved.

Luminescent carbon nanodots (CNDs) with the size in the range 1–10 nm stand for a new class of carbon-based nanomaterials and have attracted tremendous interest due to their unique properties [1]. CNDs with tunable band gap, stable photoluminescence (PL), easy functionality, excellent biocompatibility, and lower cytotoxicity offer excellent potential candidates for various applications [1,2]. Unfortunately, though extensive efforts have been devoted to the synthesis and optical property investigations of CNDs, the research of the nonlinear optical (NLO) response to ultra-fast laser pulses has nearly been

You May Also Find These Documents Helpful

  • Good Essays

    1 Eq 1 And 2 0

    • 798 Words
    • 4 Pages

    1: EQ1 – What economic reasons caused Europeans to colonize North America? There were four key European countries that colonized North America. Read about these countries below and then contrast their economic reasons for colonizing on a graphic organizer. Several European countries followed the trip made by Columbus in search of new trade routes to Asia. They ended up colonizing North America for different economic reasons. Spain colonized America because they were searching for gold and silver…

    • 798 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    UNIT 2 0 BUSINESS

    • 1457 Words
    • 9 Pages

    Date Issued: Completion Date: Submitted On: Qualification: Edexcel BTEC Level 3 Extended Diploma in Business Unit 2: Business Resources Assignment 1 – Business Consultancy Assignment 2 – Domestic Dog Homes In this assessment you will have opportunities to provide evidence against the following criteria. Indicate the page numbers where the evidence can be found. Criteria Reference To…

    • 1457 Words
    • 9 Pages
    Satisfactory Essays
  • Good Essays

    Child Development 0-2

    • 1563 Words
    • 7 Pages

    Summarise the main development of a child from the age range 0-2, 3-5 and 5-8 years The main developments of a child are as follows:  Physical Development  Intellectual Development  Language Development  Emotional Development  Social Development Here I will summarise the above points: Physical Development 0-2 years The first physical stages in a baby happen after they are born. They will start by learning how to hold their head up. Babies have a grasping reflex which enables them…

    • 1563 Words
    • 7 Pages
    Good Essays
  • Better Essays

    "4 1/2 minutes"

    • 716 Words
    • 2 Pages

    Human Failure "4 1/2 minutes" is a story full of the darkest human emotions and human interaction at its worst. The main character, Miles, will take the reader through a journey and one will wonder why it ends so abruptly. Miles has already begun his torrential downfall eventually leading to his absence of mind and life. Kate Sheofsky wrote this story to show the realness of humans and not to put a sugar coating on it. The author told a weaving, intricate, and beguiling story of human failure in…

    • 716 Words
    • 2 Pages
    Better Essays
  • Powerful Essays

    1 2 3 4

    • 6374 Words
    • 23 Pages

    Sydney's Harbour Café Part 1. Review programs, systems and processes Sydney's Harbour Café is a medium-sized Café business operating in NSW, Australia. There are about 5 branches distributed in Sydney city, each one is a medium-size café in a good location. Although it is only a small business, however its administration is highly organised. Task 1 1- Write a list of the key systems and processes used within the organisation, or within one business unit of the organisation. Sydney's…

    • 6374 Words
    • 23 Pages
    Powerful Essays
  • Powerful Essays

    Grade 1-2-4

    • 1166 Words
    • 5 Pages

    Lesson Title: Litter Bugs and the Recycling Bin Date & Estimated Time: Approx. 25 min, January 30th Learning Standards: D2.Civ.2.K-2. Explain how all people, not just official leaders, play important roles in a community. D2.Civ.3.K-2. Explain the need for and purposes of rules in various settings inside and outside of school. D2.Civ.7.K-2. Apply civic virtues when participating in school settings. CCSS.ELA-Informational.RL.1.2: Identify the main topic and retell key details of a…

    • 1166 Words
    • 5 Pages
    Powerful Essays
  • Better Essays

    Case 9-4

    • 1781 Words
    • 8 Pages

    Case 9-4 Trueblood Case 09-4 Solution Case 9-4 How should NeedsSpace account for the two obligations noted as provisions in the lease agreement? ● Provision 1: “Lessor may require the lessee to perform general repairs and maintenance on the leased premises.” By entering the lease agreement, NeedsSpace (the lessee) becomes legally and contractually responsible for performing general repair and maintenance on the leased premises. Assuming that the lessee is required to make deposits to financially…

    • 1781 Words
    • 8 Pages
    Better Essays
  • Satisfactory Essays

    Needspace 9-4

    • 657 Words
    • 3 Pages

    NeedsSpace Case 9-4 NeedsSpace is leasing space to rent corporate offices from WeHaveIt. According to ASC 840, NeedsSpace has entered into an operating lease with a lease term of 10 years as defined by the Glossary in ASC 840 (paragraph 5(f) of Statement 13). The lease will be terminated at the end of the 10 year term and NeedsSpace will not be given the option to renew. The lease agreement specifies that the lessee may have to perform certain tasks at the cost of the lessee when the lease term…

    • 657 Words
    • 3 Pages
    Satisfactory Essays
  • Powerful Essays

    0

    • 1724 Words
    • 6 Pages

    Logic: If hypothesis #1 was true, what was the predicted outcome? What was the predicted outcome if hypothesis #2 was true? Method: What was the experimental design? Results: What was the pattern of data? Inferences: What can be concluded about the hypotheses based on the data? What can be concluded about the specific and broad question? What are the next steps? How long is a QALRMI? Long-enough to answer each question with clear and brief sentences. Contents of this document 1. Long-form notes of…

    • 1724 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Dq 1 and 2 Week 4

    • 1894 Words
    • 8 Pages

    destined for a different machine. Hackers use these methods to grab data from the network which can include usernames and passwords to even more sensitive information. It is important to disable untrusted Layer 2 ports. This will limit traffic between hosts and close up any vulnerabilities. Layer 2 switches can also establish Virtual Local Area Networks, which separate networks logically on the same physical network. QoS protocols can also provide additional protection by providing better bandwidth utilization…

    • 1894 Words
    • 8 Pages
    Good Essays