Sequential Electrostatic Assembly of Amine-Derivatized Gold and Carboxylic Acid-Derivatized Silver Colloidal Particles on Glass Substrates

Langmuir ◽  
2000 ◽  
Vol 16 (17) ◽  
pp. 6921-6926 ◽  
Author(s):  
Ashavani Kumar ◽  
A. B. Mandale ◽  
Murali Sastry
Keyword(s):  
Carboxylic Acid ◽  
Colloidal Particles ◽  
Glass Substrates ◽  
Electrostatic Assembly

scholarly journals Formation and Stability of Smooth Thin Films with Soft Microgels Made of Poly(N-Isopropylacrylamide) and Poly(Acrylic Acid)

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2638
Author(s):  
Elena Buratti ◽  
Ilaria Sanzari ◽  
Franco Dinelli ◽  
Themistoklis Prodromakis ◽  
Monica Bertoldo
Keyword(s):  
Acrylic Acid ◽  
Colloidal Particles ◽  
Polymer Network ◽  
Spin Speed ◽  
Glass Substrates ◽  
Smooth Film ◽  
The Difference ◽  
The Stability ◽  
Individual Particles ◽  
Poly Acrylic Acid

In this work, soft microgels of Poly(N-Isopropylacrylamide) (PNIPAm) at two different sizes and of interpenetrated polymer network (IPN) composed of PNIPAm and Poly(Acrylic Acid) (PAAc) were synthesized. Then, solutions of these different types of microgels have been spin-coated on glass substrates with different degrees of hydrophobicity. PNIPAm particles with a larger diameter form either patches or a continuous layer, where individual particles are still distinct, depending on the dispersion concentration and spin speed. On the other, PNIPAm particles with a smaller diameter and IPN particles form a continuous and smooth film, with a thickness depending on the dispersion concentration and spin-speed. The difference in morphology observed can be explained if one considers that the microgels may behave as colloidal particles or macromolecules, depending on their size and composition. Additionally, the microgel size and composition can also affect the stability of the depositions when rinsed in water. In particular, we find that the smooth and continuous films show a stimuli-dependent stability on parameters such as temperature and pH, while large particle layers are stable under any condition except on hydrophilic glass by washing at 50 °C.

METAL NANOCLUSTER FORMATION BY ION IMPLANTATION IN SILICATE GLASSES: NONLINEAR OPTICAL APPLICATIONS

1996 ◽  
Vol 05 (02) ◽  
pp. 285-330 ◽  
Author(s):  
P. MAZZOLDI ◽  
G.W. ARNOLD ◽  
G. BATTAGLIN ◽  
F. GONELLA ◽  
R.F. HAGLUND
Keyword(s):  
Optical Properties ◽  
Ion Implantation ◽  
Optical Switching ◽  
Nonlinear Optical ◽  
Colloidal Particles ◽  
Nonlinear Optical Properties ◽  
Implantation Technique ◽  
Glass Substrates ◽  
Quantum Confinement Effects ◽  
Optical Applications

Implantation of metal ions (e.g., silver, copper, gold, lead) in glass substrates leads under certain circumstances to the formation of nanometer-radius colloidal particles in a thin surface layer. These particles exhibit an electron plasmon resonance which depends on the optical constants of the implanted metal and on the refractive index of the glass host. The nonlinear optical properties of such colloids, in particular the enhancement of optical Kerr susceptibility by both dielectric and quantum-confinement effects, suggest that the ion implantation technique may play an important role for the production of all-optical switching devices. A review of the state-of-the-art of the research in this field will be presented from the perspective of the nonlinear optical properties of ion-implanted glasses.

Effects of Particle Size and Substrate Surface Properties on Deposition Dynamics of Inkjet-Printed Colloidal Drops for Printable Photovoltaics Fabrication

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
S. Biswas ◽  
S. Gawande ◽  
V. Bromberg ◽  
Y. Sun
Keyword(s):  
Particle Size ◽  
Contact Line ◽  
Colloidal Particles ◽  
Size Range ◽  
Substrate Surface ◽  
Hybrid Solar Cells ◽  
Glass Substrates ◽  
Substrate Properties ◽  
Device Properties ◽  
Ink Formulation

Using fluorescence microscopy, the inkjet deposition dynamics of monodispersed polystyrene particles in the size range of 0.02–1.1 μm have been studied on glass, Ar plasma cleaned glass, and PDMS coated glass substrates. The results show that the substrate properties play an important role in determining the final dried patterns formed by the colloidal particles. Our observations also reveal that particle size and contact angle formed by the solvent in the dispersion determine how close to the contact line the particles can be deposited. It is found that smaller particles can move closer to the deposited contact line than particles with bigger sizes. This study can serve as a realistic experimental model system for a number of fundamental queries on how the final deposition microstructure depends on the ink formulation and substrate properties. The knowledge obtained here can be explored further to optimize process parameters for the fabrication of hybrid solar cells with improved morphology and device properties.

Studies on the Effects of Particle Size and Substrate Surface Properties on the Deposition Dynamics of Inkjet-Printed Colloidal Drops for Printable Photovoltaics Fabrication

2009 ◽  
Author(s):  
Somnath Biswas ◽  
Sailee Gawande ◽  
Vadim Bromberg ◽  
Ying Sun
Keyword(s):  
Particle Size ◽  
Contact Line ◽  
Colloidal Particles ◽  
Size Range ◽  
Substrate Surface ◽  
Hybrid Solar Cells ◽  
Glass Substrates ◽  
Substrate Properties ◽  
Device Properties ◽  
Ink Formulation

Using fluorescence microscopy, the inkjet deposition dynamics of monodispersed polystyrene particles in the size range of 0.02 to 1.1 μm have been studied on glass, Ar plasma cleaned glass, and PDMS coated glass substrates. The results show that the substrate properties play an important role in determining the final dried patterns formed by the colloidal particles. Our observations also reveal that particle size and contact angle formed by the solvent in the dispersion determine how close to the contact line the particles can be deposited. It is found that smaller particles can move closer to the deposited contact line than particles with bigger sizes. This study can serve as a realistic experimental model system for a number of fundamental queries on how the final deposition microstructure depends on the ink formulation and substrate properties. The knowledge obtained here can be explored further to optimize process parameters for the fabrication of hybrid solar cells with improved morphology and device properties.

Sign in / Sign up

Export Citation Format

Share Document