- deposited Diamond Like Carbon (DLC) ultra thin and thin films and nano coatings on different substrates, such as :

** SS-316 LMV,
** Teflon,
** Ceramics,
** Semiconductor materials for infrared optics (Si, GaAs, Ge and ZnSe as well.).

Cardiovascular Implants (stents) made of SS-316 and Nitinol have been coated by ultra thin and thin film ta-C and a-C types of DLC .

Further development of the technology resulted in obtaining ultra hydrophobic hybrid material - polymer (teflon)/DLC, coated as thin and ultra thin films on metal substrate - SS 316 LVM Stent.

The quality of the deposited films and the properties of the new material have been examined.

non-coated stainless steel surface
DLC coated stainless steel surface
Human immune-competent blood cells after 30 min under arterial shear conditions
DLC coated SS 316 LVM Stent
DLC coated Nitinol Stent
Teflon DLC coated
Teflon graft DLC coated
Teflon / ta-C DLC coated
 
     

Metal nanoparticles of Silver and Platinum have been incorporated within the DLC matrix coatings on cardiovascular stents.
Researchers published info that "...DLC-silver and DLC-platinum composite films reveals ... self-assemble into particulate nano composite structures that possess a high fraction of sp3-hybridized carbon atoms. DLC-silver-platinum films demonstrated exceptional antimicrobial properties ."

MDLC coated Stent and
nonCoated Stent
 
     


Radiopaque Stent

BCC-BC has developed and manufactured a radiopaque stent.
SS 316 LVM stent has been coated by thin film - 50 nm ta-C type of DLC and within the same process metal nano particles of platinum have been incorporated within the DLC structure.
By standard X-ray procedure, two sample stents coated by DLC and by MDLC have demonstrated substantially different radiopaque capabilities - MDLC is better visible under x-ray.
Radiopacity is one of the key considerations in the design of various devices such as stents that are used during radiological control on cardiovascular intervention.
MDLC coated and
DLC coated Stents
 
   

- has developed a new applied technology for deposition of ultra thin and thin films DLC (a-C and ta-C types) on Nitinol stent.

DLC coated Nitinol Stent
0.1 and 10 microns resolution
 
 
   

Depositing thin and ultra thin films of polymer P-312 (our designation), from the family of phosphonats on ceramic and metal substrates, besides known properties, such as biocompatibility and biodegradability a strongly manifested photoluminescence has been observed.
The polymer has mol.w. 12,500 Dalton.
These biodegradable polyphosphoesters are appealing for biological and pharmaceutical applications, because of their biocompatibility and similarity to bio-macromolecules such as nucleic acids.
Intensive research and development of P-312 potential and properties is in progress.

The polymer has been successfully coated on stainless steel sheets. The coatings are smooth, uniform and have a good adherence. After 75-days storage at ambient conditions biodegradation of the coating can be observed.
P - 312 Polymer
photoluminescence
 
P - 312 Polymer coated
 
 
   

- has started depositions of biocompatible and biodegradable nano coats, based on P-329 natural biopolymer Polyhydroxybutyrate (PHB) and its co-polymers, on DLC coated cardiovascular stent.
By using the STLB technology, a stainless steel stent has been uniformly coated with a 80 nm film of PHB. The coating has a good adherence, is smooth and without cracks.

By the STLB technology - is capable to coat up to 50 stents within 60 min.

P-329 nano films might be coated (sandwich) by an ultra thin layer of biodegradable and biocompatible metal alloy M-014

P - 329 Polymer
deposited as 80 nm film on SS 316
 
 
   

BCC-BC has done controllable deposition of complex biopolymer material known as Myoglobin - protein with mol. w. 17400 Dalton. Thin films have been coated without risk of damaging protein's properties onto many substrates. Myoglobin thin films have been subject to quantified using Fourier Transform Infrared Spectroscopy (FTIR) for comparisons to native materials.

FTIR Myoglobin - native
FTIR Myoglobin thin film
 
   

BCC-BC is performing controllable deposition of complex polymers and organic materials. Deposition on PLGA resomer RG 503 H synthetic biodegradable and biocompatible polymer in nano coats. The material is applied in pharmaceutics and DES. Multi-layered films are deposited without any risk of harming the deposited material properties onto any surface. Polymer bone structure analysis of these films have been quantified using Fourier Transform Infrared Spectroscopy (FTIR) for comparisons with native materials.

SEM
(Scanning Electron microscope)
PGLA film deposited by means of laser technology on SS substrate
FTIR PLGA - native
FTIR PLGA thin film
 
 
   

BCC-BC has started testing ultra thin PET polymeric films on standard testing substrates, for heavy metal detection sensor device.
The Polymer D 712 (our designation name) and some of it's generations have shown properties usable for highly sensitive sensors and display utilities, made in form of
ultra thin and thin films..
Looking for cooperation and partnership within FP7 of EU.

D 712
D 712 Second Generation
 

Direct Laser Writing
 
     

Direct Laser Writing of Ohmic contacts of A2B6 thin films for Solar Cells application.

The SEM picture shows planar, high power contacts from CdO on CdSSe ( 2 mkm polycrystalline film ) for photosensors application.
SEM of CdO on CdSSe
 
 
 
 

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