Effect of chain length of self-assembled monolayers in dip-pen nanolithography using molecular dynamics simulations

Wu, Cheng-Da; Fang, Te-Hua; Lin, Jen Fin

doi:10.1016/j.jcis.2011.05.040

Cited by 10 publications

(2 citation statements)

References 30 publications

(36 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be used to analyze molecular trajectories and thermodynamic properties. Many nanosystems have been analyzed using MD, such as studies on nanowetting properties [8], nanoimprinting [9], nanoforming [10], and dippen nanolithography [11,12]. Herrero and Ramirez [13] studied the diffusion of hydrogen in graphite and found that hydrogen atoms jump from a C atom to a neighboring one with an activation energy of about 0.4 eV.…”

Section: Introductionmentioning

confidence: 99%

Effects of pressure, temperature, and geometric structure of pillared graphene on hydrogen storage capacity

Fang

2012

International Journal of Hydrogen Energy

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Effects of pressure, temperature, and geometric structure of pillared graphene on hydrogen storage capacity

Fang

2012

International Journal of Hydrogen Energy

Self Cite

View full text Add to dashboard Cite

“…Previous mechanistic studies into the DPN process have focused extensively on the transfer of small molecules that form self-assembled monolayers. [25][26][27][28][29][30][31][32][33][34][35][36] A diffusion model in which the ink molecules diffuse from the tip to the surface can explain the meniscus-mediated transfer and patterning of such conventional ink molecules. According to this model, the diameter of a patterned feature scales linearly with the square root of time that the tip spends in contact with the surface at the patterning location, known as the dwell time.…”

Section: Introductionmentioning

confidence: 99%

The role of viscosity on polymer ink transport in dip-pen nanolithography

et al. 2013

View full text Add to dashboard Cite

Understanding how ink transfers to a surface in dip-pen nanolithography (DPN) is crucial for designing new ink materials and developing the processes to pattern them. Herein, we investigate the transport of block copolymer inks with varying viscosities, from an atomic force microscope (AFM) tip to a substrate. The size of the patterned block copolymer features was determined to increase with dwell time and decrease with ink viscosity. A mass transfer model is proposed to describe this behaviour, which is fundamentally different from small molecule transport mechanisms due to entanglement of the polymeric chains. The fundamental understanding developed here provides mechanistic insight into the transport of large polymer molecules, and highlights the importance of ink viscosity in controlling the DPN process. Given the ubiquity of polymeric materials in semiconducting nanofabrication, organic electronics, and bioengineering applications, this study could provide an avenue for DPN to expand its role in these fields.

show abstract

Study on the Synthesis and Interfacial Interaction Performance of Novel Dodecylamine‐Based Bonding Agents Used for Composite Solid Propellants

Chen

Liu

Shi

et al. 2014

Propellants Explo Pyrotec

View full text Add to dashboard Cite

An effective pathway was explored to design and select proper bonding agents that could effectively improve the interfacial interactions between bonding agents and solid particles, with three novel synthesized alkyl bonding agents, dodecylamine‐N,N‐di‐2‐hydroxypropyl‐acetate (DIHPA), dodecylamine‐N,N‐di‐2‐hydroxypropyl‐hydroxy‐acetate (DIHPHA) and dodecylamine‐N,N‐di‐2‐hydroxypropyl‐cyano‐acetate (DIHPCA), as examples. Molecular dynamics simulation was applied to compare unit bond energies of these bonding agents with the [110] crystal face of ammonium perchlorate (AP) and the [120] crystal face of hexogen (RDX). The infrared test was used to characterize the interfacial interactions of these bonding agents with AP or RDX. XPS test was applied to calculate the adhesion percentage of the bonding agents on the surface of precoated AP or RDX particles. All of the above results indicated that these three bonding agents have strong interfacial interactions with AP or RDX in the order of DIHPCA>DIHPHA>DIHPA. The prepared three bonding agents were used in HTPB/AP/RDX/Al propellants, and their effects on tensile strength (σ), elongation under maximum tensile strength (εm), elongation at breaking point of the propellant (εb) and adhesion index (Φ) of the propellant were studied. The results show that the bonding agents improve the mechanical properties of the propellant in the order of DIHPCA>DIHPHA>DIHPA. The methods found from theoretical design, materials synthesis, and mechanistics studies up to practical application show effective guiding significance for choosing the proper bonding agent and improving the interfacial interactions between the solid particles and binder matrix.

show abstract

Effect of chain length of self-assembled monolayers in dip-pen nanolithography using molecular dynamics simulations

Cited by 10 publications

References 30 publications

Effects of pressure, temperature, and geometric structure of pillared graphene on hydrogen storage capacity

Effects of pressure, temperature, and geometric structure of pillared graphene on hydrogen storage capacity

The role of viscosity on polymer ink transport in dip-pen nanolithography

Study on the Synthesis and Interfacial Interaction Performance of Novel Dodecylamine‐Based Bonding Agents Used for Composite Solid Propellants

Contact Info

Product

Resources

About