Electric Opaque Smart Glass is a Key Trend in Hospital Design

The Critical Connection Between Hospital Architecture & Patient Safety

Safety standards in healthcare environments are constantly evolving. With every new-found health issue and hazard, healthcare facilities must quickly adapt to best treat patients while ensuring the safety of staff, patients, and visitors. Agility and adaptability are especially necessary during times of a pandemic or a rapidly spreading virus. During these periods, hospitals are forced to prepare and adjust for new safety precautions and accommodate an influx of patients in impossibly tight time frames.

To continue making hospitals and medical care facilities a safe space for treatment and healing, hospital designers, architects and builders are turning to smart materials. But what materials do leading hospital designers and architects typically consider when safety is top-of-mind? What dangerous pathogen-harboring fabrics and textiles do they steer clear of? And most importantly, what game-changing innovations in material science and smart materials are they incorporating to future proof these vital spaces? Three of the biggest considerations in this field:

  • encouraging agility by creating open spaces
  • ensuring patient safety and minimizing exposure to new harmful pathogens
  • improving patient well-being and the recovery process

There are numerous ways to address these factors, from dynamically
converting existing treatment spaces, to building pop-up facilities in emergency situations. But hospital designers, architects and builders should first consider the surfaces in the building, both in terms of what materials are used and how to reduce the amount of surfaces that patients and healthcare workers come into contact with.

Sunderland OFF copy 1

I – PLANNING AHEAD

Switchable Glass Partitions Improve Infection Control
in Healthcare Facilities

Hospital designers and architects consider a variety of factors when planning a new healthcare facility, from fire safety to building material selection.

But one of the most critical aspects for consideration is the infrastructure-based measures that support infection control to create a healthy and sanitary environment. Medical facilities are a public space that require a combination of openness and agility, which inherently makes limiting the potential spread of infection a challenge.

The Need for a Hygienic Solution

We are being exposed to disease-causing pathogens more than ever before – from those picked up beyond borders during travel to those living on the local bus route. When a person is admitted to a hospital or healthcare facility, they can be a host to any number of contaminants. These pathogens can easily spread to other patients, staff, and visitors. In US-based hospitals alone, the Centers for Disease Control and Prevention (CDC) estimates that HAIs account for “1.7 million infections and 99,000 associated deaths each year”.

Figure 1- Prevalence of health care-associated infection in high-income countries, 1995-2010, World Health Organization

Screen Shot 2020 05 01 at 5.15.58 PM

Figure 1 shows patients admitted to hospitals who were subject to Health Care Associated Infections (HCAI). A study at the Cleveland Veterans Affairs Medical Center found hospital curtains were a significant cause of infectious disease transmission. Over 42% of privacy curtains tested were contaminated with bacteria.

Screen Shot 2020 05 01 at 5.21.51 PM

Smart Glass in Hospital Design for Infection Control

Technologies in the switchable glass space are changing hospital design as we know it and improving healthcare standards. Smart Glass changes transparency on demand, supporting a clear window or a solid opaque partition that creates a private or shaded space. It can be turned on and off in a variety of ways from a button, to an application or voice/motion control. Switchable smart glass partitions are a key feature in facilities with high infection control infrastructure, easily integrating into corridor partitions, doors, and room dividers and offering a multifunctional solution.

1) High Sanitation

Glass is the easiest material to clean and disinfect. Like regular glass, switchable glass is cleaned with a simple antibacterial solution. On the other hand, curtains used for privacy in hospitals are either disposable (increase waste and create a recurring cost) or are washable fabric that is hard to clean so they are left unattended. Smart glass supports general hospital hygiene – a key factor in reducing HAIs.

“According to The Journal of Hospital Infection, disinfectants with 62-71% ethanol, 0.5% hydrogen peroxide or 0.1% sodium hypochlorite (bleach) can “efficiently” inactivate coronaviruses within a minute. These cleaning agents can’t be used on carpets, curtains and fabric covered furniture, but can be used on regular or switchable glass.”

2) Patient Isolation

Private patient rooms are proven to provide a better healing environment, and they can also quickly be converted into isolated areas in case of a pandemic or rapidly spreading virus. With switchable glass partitions, staff can monitor patients without entering a room, and depending on conditions, have instant privacy for security or treatment purposes. For example, PriWatt™ Glass partitions allow staff to observe patients from afar, provide privacy as required, improve sound isolation and are easy to decontaminate. It can be used to darken ultrasound rooms and shade interiors.

3) Minimal Material Handling

When glass partitions are paired with fabric curtains, personnel frequently touch fabric which creates cross contamination of dangerous pathogens. Switchable glass technology requires minimal interaction and material handling as it can be controlled through various interfaces. It can be voice-activated, remote control powered, or turned on and off through a smart office application.

Screen Shot 2020 05 01 at 5.22.54 PM

II – THE END OF FABRIC CURTAINS

A Healthier Solution for Hospital Room Partitions

Fabric curtain systems in healthcare facilities are designed to give patients privacy. But studies say they may be providing much more than that. According to the University of Michigan Medical Center, fabric hospital room partitions host hazardous drug-resistant pathogens that can survive on bedside curtains undetected and live for months at a time.

The results of this study show that up to 28% of curtains sampled in six of the top healthcare facilities in Michigan contained bacteria resistant to powerful antibiotics. The researchers also found that these bacteria are not simply living on the curtains; they are responsible for spreading illnesses to patients—many of which have vulnerable immune systems—and to the staff members who care for them.

To mitigate the negative impact of fabric curtains, they would need to be removed and washed between patients, which is simply an unrealistic standard for the high volume turnover in hospitals and emergency rooms. Alternative solutions like antimicrobial curtains, or disinfectant fabric sprays, are not proven to significantly reduce the spread of infection causing pathogens.

During a pandemic when hospitals can be overcrowded, the cons of curtains are only intensified. According to Bryan Langlands, designer and infection control expert at the architecture firm NBBJ, most hospital formats have prep and recovery areas for patients
undergoing surgery, with individual bays (or rooms) divided by thin cubicle curtains. But patients with highly contagious viruses should ideally be placed in private rooms in case they require intensive care and ventilation.“If you have the foresight, budget and space, you should design all private enclosed rooms as opposed to open bays…”Langlands says.

“If you have the foresight, budget and space, you should design all private enclosed rooms as opposed to open bays.” – Bryan Langlands, Designer & Infection Control Expert at NBBJ

Healthcare Architects Maintain Privacy with Smart Glass

Many healthcare architects who specialize in how a hospital floor plan affects health outcomes are increasingly choosing modern solutions like switchable privacy glass over curtain dividers and fabric-based partitions. PriWatt™ Smart Glass uses a technology that allows glass to change from transparent to varying levels of opaque for instant privacy. It allows staff to check on patients without disturbing them. Most importantly, it is easy to clean, ensuring areas are disinfected during and after a patient’s stay.

III – HEALING DESIGN

Smart Glass in Healthcare Facilities Improve the Patient Recovery Process

Not only does Smart Glass significantly outweigh the benefits of curtains and improve patient safety, it dramatically enhances the patient recovery process. Throughout the 20th century, hospitals were designed with healthcare providers in mind, not the patients. As a result, the functionality of the physical space within a hospital was of far more importance than how a patient actually felt in the space.

1) Single Rooms or Private Spaces

Having a private space to recover reduces stress, allows for better rest and supports wellbeing. Using glass partitions in wards helps to section off spaces and create private rooms but also leaves a transparent window to easily check on patients. Rather than using fabric curtains to create a private space, smart glass provides instant privacy with the flip of a switch, for either the patient when they want to rest or the staff during treatment.

2) Reduced Noise

Research has shown that noise plays a negative role in healing. Decreasing noise in patient care areas aids in healing processes and helps facilitate speedier recoveries. Noise creates stress (as exhibited by elevated blood pressure) and makes it harder to sleep, which are both detrimental to a speedy recovery. Laminated smart glass installed into an acoustic partition significantly decreases noise, making for a quieter healing space.

3) Exposure to Light

The positive effects of natural light are well known and indisputable. A study conducted over 15 years in various healthcare facilities shows that patients who had a bed near a window with natural light stayed in the facilities for less time than those who did not. Windows in patient rooms allow natural light to fill the space, and glass partitions allow that light to transfer beyond the bedside and into the corridors. But when a patient wants to sleep, or the sun is shining too bright, architectural grade switchable Smart Glass provides a shading solution that is hygienic and easy to clean, eliminating the need for bacteria-hosting fabric curtains.

SMARTGLASSMEDICAL

4) Architecture That Heals

The design and atmosphere of a patient’s surroundings have a major connection to how they feel, and in turn, heal. Smart Glass Technologies PriWatt™ Glass provides a level of control in a situation where so much may be out of a patient’s control. It supports a quiet, private, and hygienic space that patients need.

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CONCLUSION

The reality is that life-threatening viruses aren’t going away – and healthcare facilities are on the frontline. The world is now more accessible than ever due to international travel, which means diseases can spread across the globe at exponential rates. Whether pandemics, epidemics, or a localized disease, the need for hospital designers and architects to critically consider the building materials and interior fit outs they use is clear.It’s time to say goodbye to contaminated curtains, and welcome in a new era of smart material founded in material science. Smart Glass Technologies allows for the design of healthcare spaces that better consider the needs of both patients and medical providers.

The building and construction industry must do its part to help foster a safer future for hospitals and healthcare facilities by considering the following crucial findings:

1) The time to act is now

In America alone, the CDC estimates that HAIs account for 1.7 million infections and 99,000 associated deaths each year.

2) Critically rethink building surfaces

Smarter building materials such as smart glass partitions minimize the spread of infection and help prevent the risks of hospital and healthcare acquired infections.

3) Curtains are a virus hotbed

Fabric hospital room partitions host hazardous drug-resistant pathogens that can survive on bedside curtains undetected and live for months at a time.

4) The impossible is already possible

PriWatt™ Glass partitions have all the sanitary benefits of regular glass plus offer privacy for patients. This improves patient well-being and the entire healing process, while creating more open and agile environments.

PriWatt™ Glass can be easily used in areas of a hospital or healthcare facility where privacy glass enclosures are most common like:

• Private Patient Rooms
• Room Dividers
• Waiting Areas
• Offices
• Consultation Rooms
• Operating Galleries
• Nurseries

Switchable Smart Glass by Smart Glass Technologies is available as a laminated glass for new construction or can be provided as an adhesive film for already existing glass.
Click here to learn more

Interested in PriWatt™ Glass for your next project?
Contact us for a quote today!

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On Key

Related Posts

Choose your film

Film Reverse (PNLC) vs. Film Original (PDLC)

Both films switch between clear and private. The difference is what happens when the power is off — and that decides which one fits your space.

Reverse switching

Film Reverse — PNLC

Clear when the power is off, private when the power is on.

  • Power offClear — 91% visible light, 2.4% haze
  • Power onPrivate — 94% haze
  • If power failsThe glass stays clear
  • Best forOffice space — less haze, slightly less private
  • Energy usePowered only while you want privacy
Request pricing
Most popular

Film Original — PDLC

Clear when the power is on, private when the power is off.

  • Power onClear — 88% visible light, 3% haze
  • Power offPrivate — still lets 73% of daylight in
  • If power failsThe glass goes private
  • Best forResidential, exterior, maximum privacy
  • Energy usePowered while you want the glass clear
See Film Original

Not sure which one fits? Call 786-460-6762 and a project manager will help you decide.

Technical data

PriWatt™ PNLC at a glance

Reverse switchable technology that stays clear without power and turns private only while it is switched on.

Power offClear / transparent91% visible light, 2.4% haze.
Power onPrivate94% haze in private mode.
Color optionsWhiteReverse is available in white only.
Low voltage25–80 VACLess than 0.5 W per sq. ft.
Switching speedUnder 200 millisecondsUnder 10 milliseconds back to clear.
UV protection99%In both clear and private states.
Energy useOnly while privateNo power needed to stay clear.
Operating range−10°C to 60°CRated for over 800,000 switching cycles.
Smart Glass Technologies
Technical information
and installation guide
PRIWATTPNLC REVERSE
WWW.SMARTGLASSTECH.US

PriWatt™ PNLC Technical Manual

Full technical data, installation guide, wiring and control options.

Download the manual (PDF)

FAQ

Smart Film Reverse Questions

What makes Film Reverse different?

Film Reverse (PNLC) is clear when the power is off and turns private only while it is switched on, the opposite of Film Original (PDLC).

What happens when the power goes off?

The glass stays clear, so the space keeps its view and daylight during a power outage.

Can it be applied to glass I already have?

Yes. PriWatt™ film is a self-adhesive film applied directly to existing interior glass, windows and doors, so the glass does not have to be replaced.

How fast does it switch?

Under 200 milliseconds from clear to private and under 10 milliseconds back to clear, so the change looks instant.

Does privacy mode block the view completely?

In privacy mode haze reaches 94%, so people and shapes cannot be made out while natural light still comes through. It is a privacy product, not a blackout blind.

What colors are available?

Film Reverse is available in white only.

How is it controlled?

With a wall switch, a remote, a smartphone, or through Alexa and Google Home. Panels can be grouped and scheduled.

Can I install it myself?

We do not recommend it. Our certified installers measure and apply the film, and a certified electrician makes the power connection. Busbar positions and wiring have to be planned before manufacturing.

Request pricing

Choose your film

Film Original (PDLC) vs. Film Reverse (PNLC)

Both films switch between clear and private. The difference is what happens when the power is off — and that decides which one fits your space.

Most popular

Film Original — PDLC

Clear when the power is on, private when the power is off.

  • Power onClear — 88% visible light, 3% haze
  • Power offPrivate — still lets 73% of daylight in
  • If power failsThe glass goes private
  • Best forResidential, exterior, maximum privacy
  • Energy usePowered while you want the glass clear
Request pricing
Reverse switching

Film Reverse — PNLC

Clear when the power is off, private when the power is on.

  • Power offClear — 91% visible light, 2.4% haze
  • Power onPrivate — 94% haze
  • If power failsThe glass stays clear
  • Best forOffice space — less haze, slightly less private
  • Energy usePowered only while you want privacy
See Reverse

Not sure which one fits? Call 786-460-6762 and a project manager will help you decide.

Technical data

PriWatt™ Film at a glance

Professional-grade switchable film engineered for instant privacy, high light transmission and low-voltage operation.

Power offOpaque / privatePrivacy is the default state.
Power onTransparent / clear88% visible light transmission.
Color optionsWhite, grey or tintedSelect the finish for your design.
Low voltage48–55 VACLess than 0.5 W per sq. ft.
Switching speedUnder 45 millisecondsPrivacy changes appear instant.
UV protectionMore than 98%In both clear and private states.
Film thickness0.4 mmApplies directly to existing glass.
Rated lifecycleOver 15 yearsRated for 2 million switching cycles.
Smart Glass Technologies
Technical information
and installation guide
PRIWATTPDLC FILM
WWW.SMARTGLASSTECH.US

PriWatt™ Film Technical Manual

Full technical data, installation guide, wiring and control options.

Download the manual (PDF)

FAQ

Smart Film Questions

Can Smart Film be applied to glass I already have?

Yes. PriWatt™ film is a self-adhesive PDLC film applied directly to existing interior or exterior glass, windows and doors, so the glass does not have to be replaced.

What happens when the power goes off?

Film Original turns private when the power is off and still lets about 73% of daylight into the room. Film Reverse does the opposite and stays clear when unpowered.

How fast does it switch?

Under 45 milliseconds from private to clear and under 10 milliseconds from clear to private, so the change looks instant.

Does privacy mode block the view completely?

In privacy mode haze reaches 95%, so people and shapes cannot be made out while natural light still comes through. It is a privacy product, not a blackout blind.

Can I install it myself?

We do not recommend it. Our certified installers inspect the project, take precise measurements and apply the film, and a certified electrician makes the power connection. Busbar positions and wiring have to be planned before manufacturing.

How do I clean it?

Switch the film off, wipe with a soft cloth and 99% isopropyl alcohol, and make sure no liquid is left sitting on the edges.

How is it controlled?

With a wall switch, a remote, a smartphone, or through Alexa and Google Home. Panels can be grouped and scheduled.

How long does it last and what is covered?

The film is rated for 2 million switching cycles and a life cycle over 15 years, and it comes with a 2-year limited warranty.

Request pricing

Choose your glass

Glass Reverse (PNLC) vs. Glass Original (PDLC)

Both are laminated switchable glass panels that change between clear and private. The difference is what the glass does when the power is off — and that decides which one fits your space.

Reverse switching

Glass Reverse — PNLC

Clear when the power is off, private when the power is on.

  • Power offClear — 91% visible light, 2.4% haze
  • Power onPrivate — 94% haze
  • If power failsThe glass stays clear
  • Best forOffice space — less haze, slightly less private
  • Energy usePowered only while you want privacy
Request pricing
Most popular

Glass Original — PDLC

Clear when the power is on, private when the power is off.

  • Power onClear — 83% visible light, 3% haze
  • Power offPrivate — still lets 73% of daylight in
  • If power failsThe glass goes private
  • Best forResidential, exterior, maximum privacy
  • Energy usePowered while you want the glass clear
Explore Glass Original

Technical data

PriWatt™ Reverse Glass at a glance

Laminated reverse-switching glass, custom manufactured for each project. Key figures are taken from the PriWatt PNLC technical manual, which also covers glazing details and wiring guidance.

Power offTransparent / clear91% visible light transmission, 2.4% haze.
Power onOpaque / private94% haze for full privacy on demand.
Color optionsWhiteReverse glass is produced in white only.
Glass buildLow-iron laminated glassHeat treated or fully tempered, ~5 lbs per sq. ft.
Working voltage25–80 VAC, 50/60 HzLow voltage through a supplied transformer.
Power consumptionUnder 0.5 W per sq. ft.Only while privacy mode is powered.
Switching speedUnder 200 ms to privateReturns to clear in under 10 milliseconds.
UV blocking99% (365–380 nm)Helps protect interiors from ultraviolet light.
Solar / IR block98% IR when powered20% IR blocking in the clear state.
Panel thickness3/8", 1/2" or 9/16"Maximum panel size 57" x 130".
AcousticsSTC ~37Laminated build helps reduce sound transfer.
Rated lifecycleOver 800,000 switching cyclesOperating range -10°C to 60°C.
Smart Glass Technologies
Technical information
and installation guide
PRIWATTPNLC GLASS
WWW.SMARTGLASSTECH.US

PriWatt™ PNLC Glass Technical Manual

Full technical data, glazing and installation guide, wiring and control options.

Download the manual (PDF)

FAQ

Reverse Smart Glass Questions

What makes Reverse Glass different?

Reverse Glass uses PNLC technology, so it is clear when power is off and turns opaque when power is on. Standard PDLC glass works in the opposite way.

Is Reverse Glass a good choice for offices?

Yes. It is ideal for meeting rooms and interior partitions where glass normally stays clear and privacy is needed only at selected times.

Does it provide privacy during a power outage?

No. Reverse Glass becomes clear when power is off. For fail-private applications, standard PDLC glass is usually the better choice.

How quickly does it switch?

The glass turns private in under 200 milliseconds and returns to clear in under 10 milliseconds.

Is it energy efficient?

Yes. It runs on 25–80 VAC low voltage and consumes less than 0.5 watts per square foot while powered — and it needs no power at all to stay clear.

Can it be used in doors and partitions?

Yes. The laminated construction makes it suitable for interior doors, office partitions, conference rooms and other architectural glazing applications.

What colors are available?

Reverse Glass is available in white only. Grey and tinted options are offered on standard PDLC glass.

Where can I find installation information?

The technical manual above includes handling, electrical and installation guidance. A qualified glazing professional should complete installation.

Request pricing

Choose your glass

Glass Original (PDLC) vs. Glass Reverse (PNLC)

Both are laminated switchable glass panels that change between clear and private. The difference is what the glass does when the power is off — and that decides which one fits your space.

Most popular

Glass Original — PDLC

Clear when the power is on, private when the power is off.

  • Power onClear — 83% visible light, 3% haze
  • Power offPrivate — still lets 73% of daylight in
  • If power failsThe glass goes private
  • Best forResidential, exterior, maximum privacy
  • Energy usePowered while you want the glass clear
Request pricing
Reverse switching

Glass Reverse — PNLC

Clear when the power is off, private when the power is on.

  • Power offClear — 91% visible light, 2.4% haze
  • Power onPrivate — 94% haze
  • If power failsThe glass stays clear
  • Best forOffice space — less haze, slightly less private
  • Energy usePowered only while you want privacy
Talk to a project manager

Technical data

PriWatt™ Glass at a glance

Laminated switchable glass, custom manufactured for each project. Key figures below; the manual carries the full specification, glazing details and wiring.

Power offOpaque / private95% haze, 73% light transmittance.
Power onTransparent / clear83% light transmittance, 3% haze.
Glass buildLaminated safety glassLow iron, heat strengthened or tempered.
Thickness3/8″, 1/2″ or 9/16″Other thicknesses on request. About 5 lbs per sq. ft.
Color optionsWhite or light grayAny shape, curved panels, holes and cut-outs.
Maximum panel size70″ × 144″70″ × 126″ at 1/2″ thickness.
Working voltage48–55 VACLow voltage through a supplied transformer.
Power consumptionUnder 0.5 W per sq. ft.Only while the glass is powered.
Switching speedUnder 45 millisecondsUnder 10 ms back to private.
UV blockingOver 98%100% when the glass is off.
Sound reductionSTC ~ 40Laminated interlayer dampens noise.
Rated lifecycleOver 15 yearsRated for 2 million switching cycles.
Smart Glass Technologies
Technical information
and installation guide
PRIWATTPDLC GLASS
WWW.SMARTGLASSTECH.US

PriWatt™ Glass Technical Manual

Full technical data, glazing and installation guide, wiring and control options.

Download the manual (PDF)

FAQ

Smart Glass Questions

What is PriWatt™ Smart Glass made of?

It is laminated architectural glass with a PDLC liquid crystal film bonded inside the lamination. It is manufactured as a finished safety glass panel, in low iron, heat strengthened or tempered builds.

What happens when the power goes off?

Glass Original turns private when the power is off and still lets about 73% of daylight into the room. Glass Reverse does the opposite and stays clear when unpowered.

How fast does it switch?

Under 45 milliseconds from private to clear and under 10 milliseconds from clear to private, so the change looks instant.

Does privacy mode block the view completely?

In privacy mode haze reaches 95%, so people and shapes cannot be made out while natural light still comes through. It is a privacy product, not a blackout blind.

How large can a panel be?

Up to 70″ × 144″ at 9/16″ thickness and 70″ × 126″ at 1/2″. Larger areas are built from several panels, and curved shapes, holes and cut-outs are possible.

Can it be used outside and in doors?

Yes. For exterior use the panels are built into insulated glass units, and doors are glazed with the wiring routed through the frame or hinge. The wiring route has to be planned before manufacturing.

Who installs it?

A certified glazier installs the glass and a certified electrician makes the power connection. Our project managers handle measurements, manufacturing and coordination.

How long does it last and what is covered?

The glass is rated for 2 million switching cycles and a life cycle over 15 years, and it comes with a limited warranty. Working temperature range is -22°F to 122°F.

Request pricing