Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Guidelines for Writing Outcome01:11

Guidelines for Writing Outcome

3.8K
When developing expected outcomes for a patient care plan, the nurse should adhere to the following recommendations:
Patient outcomes reflect the patient's response to the goal rather than what the nurse aims to achieve. Terminology should be observable and measurable to avoid the reader's interpretation. The desired outcome should be realistic and achievable in the designated care timeframe. Expected outcomes should align with adjunctive therapies. The outcome should enhance care...
3.8K
Fixed Action Patterns01:06

Fixed Action Patterns

17.6K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
17.6K
Patterns of Fever01:26

Patterns of Fever

3.8K
Before understanding the types and patterns of fever, it is essential to know its phases.
3.8K
Directing Effect of Substituents: meta-Directing Groups01:09

Directing Effect of Substituents: meta-Directing Groups

5.9K
Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
5.9K
Directing Effect of Substituents: ortho–para-Directing Groups01:14

Directing Effect of Substituents: ortho–para-Directing Groups

8.4K
Ortho–para directors are substituent groups attached to the benzene ring and direct the addition of an electrophile to the positions ortho or para to the substituent. All electron-donating groups are considered ortho–para directors. They donate electrons to the ring and make the ring more electron-rich. The ring is therefore susceptible to the addition of electrophiles. Substituents such as amino, hydroxy, or alkoxy, containing lone pairs on the atom adjacent to the ring, donate...
8.4K
Oxygen Requirements and Growth Patterns01:29

Oxygen Requirements and Growth Patterns

1.4K
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
1.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

TREM2 sustains glucose metabolic homeostasis to drive antibacterial defense during sepsis.

iScience·2026
Same author

Prediction and Regulation of SCC's Shrinkage Using the PSO-BPNN Model.

Materials (Basel, Switzerland)·2026
Same author

Long-term comparative study of Open-TLIF, MIS-TLIF, and UBE-TLIF in single-level degenerative lumbar spondylolisthesis.

European journal of medical research·2026
Same author

3-n-Butylphthalide Protects SH-SY5Y Cells from Ferroptosis by Inhibiting ACSL4-Mediated Lipid Peroxidation.

Molecular neurobiology·2026
Same author

Association between serum calcium and 28-day mortality in critically ill patients with COVID-19: A retrospective cohort study from MIMIC-IV database.

Medicine·2025
Same author

Levodopa/carbidopa/entacapone versus levodopa/benserazide plus pramipexole in Chinese patients with Parkinson's disease experiencing wearing off.

Frontiers in neurology·2025

Related Experiment Video

Updated: Jan 28, 2026

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

8.6K

Optical Patterns on Drawn Polyethylene by Direct Laser Writing.

Sarah S D Lafleur1, Lihua Shen2, Ebeltien J T W Kamphuis1

  • 1Eindhoven University of Technology, P.O. Box 513, 5600, MB, Eindhoven, The Netherlands.

Macromolecular Rapid Communications
|March 7, 2019
PubMed
Summary
This summary is machine-generated.

Direct laser writing creates optical patterns on polyethylene using a photothermal dye. This method enables overt and covert authentication for anti-counterfeit applications.

Keywords:
UV absorbersdrawn polyethylenelaser writingphoto-patterning

More Related Videos

Prescribed 3-D Direct Writing of Suspended Micron/Sub-micron Scale Fiber Structures via a Robotic Dispensing System
10:36

Prescribed 3-D Direct Writing of Suspended Micron/Sub-micron Scale Fiber Structures via a Robotic Dispensing System

Published on: June 12, 2015

8.4K
Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

7.2K

Related Experiment Videos

Last Updated: Jan 28, 2026

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

8.6K
Prescribed 3-D Direct Writing of Suspended Micron/Sub-micron Scale Fiber Structures via a Robotic Dispensing System
10:36

Prescribed 3-D Direct Writing of Suspended Micron/Sub-micron Scale Fiber Structures via a Robotic Dispensing System

Published on: June 12, 2015

8.4K
Patterning via Optical Saturable Transitions - Fabrication and Characterization
08:19

Patterning via Optical Saturable Transitions - Fabrication and Characterization

Published on: December 11, 2014

7.2K

Area of Science:

  • Materials Science
  • Polymer Science
  • Optics

Background:

  • Linear polyethylene (PE) typically exhibits a fibrillar crystalline morphology.
  • Photothermal dyes can absorb light and convert it into heat.
  • Direct laser writing is a technique for creating patterns on surfaces.

Purpose of the Study:

  • To investigate the creation of optical patterns on polyethylene using direct laser writing.
  • To explore the use of a photothermal dye for pattern generation.
  • To assess the potential for anti-counterfeit applications.

Main Methods:

  • Direct laser writing with a pulsed UV laser on drawn linear polyethylene.
  • Incorporation of 2-(2H-benzotriazol-2-yl)-4,6-ditertpentylphenol (BZT) as a photothermal dye.
  • Controlled variation of UV irradiation dose to modify material properties.

Main Results:

  • Visible optical patterns were generated on the polyethylene surface.
  • The process involved local melting, shrinking, and recrystallization of PE.
  • The fibrillar crystalline morphology was lost in the irradiated areas.
  • Patterns were visible to the naked eye and between crossed polarizers.

Conclusions:

  • Direct laser writing with a photothermal dye is an effective method for creating optical patterns on polyethylene.
  • The generated patterns offer both overt and covert authentication features.
  • This technique shows promise for anti-counterfeit applications.