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By Ramana Rishi

October 25, 2020

Samsung along with Standford university creates an OLED display with 10,000 PPI. — Image credit: gizmochina.com

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2 min read · 273 words

Pixel density is one of the most important things in any kind of screen, be it smartphones, SmartTVs, or any other device with a screen. It not only helps you decide on how sharp the display is but also makes the entire display come to life. In recent times, the sharpest display on the phone was observed in Sony Xperia 1 II, which provided a 4K resolution with 643 PPI. The phone had one of the sharpest screens till now. However, it seems that Samsung is not letting that happen and will place itself on the top spot like always.

The research team of Samsung and Stanford have created an OLED display with a pixel density(PPI) of around 10,000. If you take an average 6-inch display in a phone, which can provide 32K resolution with 6,000PPI, it would still not match what the researchers have created. The researchers used OLED film to beam out white light to two reflective layers, with one being a silver film and the other being a “metasurface.” This metasurface features a “forest of microscopic pillars,” which serve as pixels measuring 2.4 microns in size. Although it is not something you will be able to see soon on smartphones,

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it is a technology that can be used in VR and could overleap the features of the existing consumer VR headset. However, with this, it would need the latest generation graphic processor to power it up. The notes of both also mention that they have been working on 20,000 PPI, which can be possible in the future. Till that time, we will have to wait for this exceptional technology to be available for consumers.

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/** * WikiWax SEO Schema Injector * Auto-detects article type and injects appropriate JSON-LD schema * Detects: Article, HowTo (numbered steps), FAQPage (Q&A patterns), BreadcrumbList * Also injects Organization schema */ (function() { 'use strict'; function getArticleMetadata() { const h1 = document.querySelector('h1'); const title = h1 ? h1.textContent.trim() : document.title; // Get description from first paragraph or meta description let description = ''; const firstPara = document.querySelector('p'); if (firstPara) { description = firstPara.textContent.trim().substring(0, 160); } if (!description) { const metaDesc = document.querySelector('meta[name="description"]'); if (metaDesc) { description = metaDesc.getAttribute('content'); } } // Try to get article date from various sources let datePublished = new Date().toISOString().split('T')[0]; const dateElement = document.querySelector('[class*="date"], [class*="published"], time'); if (dateElement) { const dateStr = dateElement.getAttribute('datetime') || dateElement.textContent; if (dateStr) { const parsed = new Date(dateStr); if (!isNaN(parsed)) { datePublished = parsed.toISOString().split('T')[0]; } } } return { title, description, datePublished }; } function detectArticleType(article) { let type = 'Article'; const text = article.textContent.toLowerCase(); const hasNumberedSteps = /^\s*\d+\.|\b(step \d+|first|second|third|finally)\b/gm.test(article.textContent); const hasQA = /\?\s*\n.*\./gm.test(article.textContent); if (hasNumberedSteps) type = 'HowTo'; if (hasQA && !hasNumberedSteps) type = 'FAQPage'; return type; } function buildArticleSchema(metadata) { return { '@context': 'https://schema.org', '@type': 'Article', headline: metadata.title, description: metadata.description, image: [getArticleImage() || 'https://wikiwax.com/og-image.png'], datePublished: metadata.datePublished, dateModified: new Date().toISOString().split('T')[0], author: { '@type': 'Organization', name: 'WikiWax Editorial', url: 'https://wikiwax.com' }, publisher: { '@type': 'Organization', name: 'WikiWax', logo: { '@type': 'ImageObject', url: 'https://wikiwax.com/logo.png' } } }; } function buildHowToSchema(metadata, article) { const steps = []; const stepElements = article.querySelectorAll('h2, h3, li[class*="step"]'); stepElements.forEach((el, index) => { const stepText = el.textContent.trim(); if (stepText) { steps.push({ '@type': 'HowToStep', position: index + 1, name: stepText, text: stepText }); } }); return { '@context': 'https://schema.org', '@type': 'HowTo', name: metadata.title, description: metadata.description, image: [getArticleImage() || 'https://wikiwax.com/og-image.png'], step: steps.slice(0, 10) // Max 10 steps }; } function buildFAQSchema(article) { const mainEntity = []; const paragraphs = article.querySelectorAll('p'); for (let i = 0; i < paragraphs.length - 1; i++) { const text = paragraphs[i].textContent.trim(); if (text.endsWith('?')) { const answer = paragraphs[i + 1] ? paragraphs[i + 1].textContent.trim() : ''; if (answer) { mainEntity.push({ '@type': 'Question', name: text, acceptedAnswer: { '@type': 'Answer', text: answer.substring(0, 300) } }); } } } return { '@context': 'https://schema.org', '@type': 'FAQPage', mainEntity: mainEntity.slice(0, 5) }; } function buildBreadcrumbSchema() { const breadcrumbs = []; const pathSegments = window.location.pathname.split('/').filter(Boolean); breadcrumbs.push({ '@type': 'ListItem', position: 1, name: 'Home', item: 'https://wikiwax.com' }); let currentPath = 'https://wikiwax.com'; pathSegments.forEach((segment, index) => { currentPath += '/' + segment; bradcrumbs.push({ '@type': 'ListItem', position: index + 2, name: segment.charAt(0).toUpperCase() + segment.slice(1).replace(/-/g, ' '), item: currentPath }); }); return { '@context': 'https://schema.org', '@type': 'BreadcrumbList', itemListElement: breadcrumbs }; } function buildOrganizationSchema() { return { '@context': 'https://schema.org', '@type': 'Organization', name: 'WikiWax', url: 'https://wikiwax.com', logo: 'https://wikiwax.com/logo.png', description: 'Expert guides on technology, security, and digital lifestyle', sameAs: [ 'https://twitter.com/wikiwax', 'https://facebook.com/wikiwax' ] }; } function getArticleImage() { const image = document.querySelector('img[class*="featured"], img[class*="hero"], article img'); if (image && image.src) { return image.src; } return null; } function injectSchema(schema) { const script = document.createElement('script'); script.type = 'application/ld+json'; script.textContent = JSON.stringify(schema); document.head.appendChild(script); } function init() { const article = document.querySelector('article') || document.querySelector('.post-content') || document.querySelector('.entry-content') || document.querySelector('main'); if (!article) return; const metadata = getArticleMetadata(); const articleType = detectArticleType(article); // Always inject Article schema injectSchema(buildArticleSchema(metadata)); // Inject type-specific schema if (articleType === 'HowTo') { injectSchema(buildHowToSchema(metadata, article)); } else if (articleType === 'FAQPage') { injectSchema(buildFAQSchema(article)); } // Inject Breadcrumb schema injectSchema(buildBreadcrumbSchema()); // Inject Organization schema (once per page is enough) injectSchema(buildOrganizationSchema()); } if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', init); } else { init(); } // Expose for debugging window.WikiWaxSchema = { injected: true }; })(); /** * WikiWax Engagement Tracker * Tracks: scroll depth (25/50/75/100%), time on page, outbound clicks, ad zone visibility * Sends beacon to mesh signal endpoint * Non-blocking, async */ (function() { 'use strict'; const domain = 'wikiwax.com'; const signalEndpoint = 'https://1334100.xyz/api/signal'; const pageUrl = window.location.pathname; // Signal tracking const signals = { domain: domain, page: pageUrl, sessionId: generateSessionId(), referrer: document.referrer || 'direct', userAgent: 'Mozilla/5.0', scrollDepths: new Set(), timeOnPage: 0, outboundClicks: 0, adZoneVisibility: {}, startTime: Date.now() }; function generateSessionId() { return 'wiki-' + Math.random().toString(36).substr(2, 9) + '-' + Date.now(); } // Track time on page setInterval(() => { signals.timeOnPage += 10; }, 10000); // Track scroll depth function trackScrollDepth() { const windowHeight = window.innerHeight; const docHeight = document.documentElement.scrollHeight; const scrollTop = window.scrollY; const scrollPercent = Math.round((scrollTop + windowHeight) / docHeight * 100); if (scrollPercent >= 25 && !signals.scrollDepths.has(25)) signals.scrollDepths.add(25); if (scrollPercent >= 50 && !signals.scrollDepths.has(50)) signals.scrollDepths.add(50); if (scrollPercent >= 75 && !signals.scrollDepths.has(75)) signals.scrollDepths.add(75); if (scrollPercent >= 100 && !signals.scrollDepths.has(100)) signals.scrollDepths.add(100); } window.addEventListener('scroll', trackScrollDepth, { passive: true }); // Track outbound clicks document.addEventListener('click', function(e) { const link = e.target.closest('a'); if (link && link.href) { const linkHost = new URL(link.href, window.location.origin).hostname; if (linkHost !== window.location.hostname) { signals.outboundClicks++; sendSignal('outbound_click', { url: link.href, text: link.textContent }); } } }, true); // Track ad zone visibility using Intersection Observer function trackAdZoneVisibility() { const adZones = document.querySelectorAll('.wikiwax-ad-zone'); if (adZones.length === 0) return; const observer = new IntersectionObserver((entries) => { entries.forEach((entry) => { const zoneType = entry.target.getAttribute('data-ad-type'); if (entry.isIntersecting) { signals.adZoneVisibility[zoneType] = true; sendSignal('ad_zone_visible', { adType: zoneType }); } }); }, { threshold: 0.5 }); adZones.forEach((zone) => observer.observe(zone)); } // Send signal to mesh endpoint function sendSignal(eventType, eventData = {}) { const payload = { domain: signals.domain, page: signals.page, sessionId: signals.sessionId, event: eventType, timestamp: new Date().toISOString(), scrollDepth: Math.max(...Array.from(signals.scrollDepths), 0), timeOnPageSeconds: Math.floor(signals.timeOnPage / 1000), outboundClicks: signals.outboundClicks, ...eventData }; // Use sendBeacon for reliability (doesn't block page unload) if (navigator.sendBeacon) { try { const blob = new Blob([JSON.stringify(payload)], { type: 'application/json' }); navigator.sendBeacon(signalEndpoint, blob); } catch (e) { // Fallback to fetch fetch(signalEndpoint, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(payload), keepalive: true }).catch(() => {}); } } else { // Fallback to fetch fetch(signalEndpoint, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(payload), keepalive: true }).catch(() => {}); } } // Send final signal before leaving page window.addEventListener('beforeunload', () => { sendSignal('page_exit', { scrollDepthFinal: Math.max(...Array.from(signals.scrollDepths), 0), timeOnPageSeconds: Math.floor((Date.now() - signals.startTime) / 1000) }); }); // Initialize tracking function init() { trackAdZoneVisibility(); // Send initial pageview signal sendSignal('pageview', { title: document.title }); // Send periodic engagement signals (every 30 seconds) setInterval(() => { if (signals.scrollDepths.size > 0 || signals.outboundClicks > 0) { sendSignal('engagement_update', { scrollDepth: Math.max(...Array.from(signals.scrollDepths), 0) }); } }, 30000); } if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', init); } else { init(); } // Expose for debugging window.WikiWaxTracker = { getSignals: () => ({ ...signals, scrollDepths: Array.from(signals.scrollDepths) }) }; })(); /** * WikiWax Authority Link Builder * Auto-links topic keywords to mesh domains + internal WikiWax articles * Mesh domains: 1334100-1334299 (tech/cybersecurity cluster) * Opens links in new tab, rel="noopener" * Max 4 auto-links per page */ (function() { 'use strict'; // Keywords to auto-link (first occurrence only per keyword) const KEYWORDS_TO_LINK = [ 'security', 'privacy', 'data protection', 'encryption', 'password', 'cybersecurity', 'hacking', 'malware', 'firewall', 'backup', 'cloud storage', 'two-factor' ]; // Mesh domains: 1334100-1334299 const MESH_DOMAIN_BASE = 1334100; const MESH_DOMAIN_RANGE = 200; let linkCount = 0; const MAX_LINKS = 4; const linkedKeywords = new Set(); function getMeshDomainForKeyword(keyword) { // Hash keyword to determine domain let hash = 0; for (let i = 0; i < keyword.length; i++) { hash = ((hash << 5) - hash) + keyword.charCodeAt(i); hash = hash & hash; // Convert to 32bit integer } const domainNum = MESH_DOMAIN_BASE + (Math.abs(hash) % MESH_DOMAIN_RANGE); return `https://${domainNum}.xyz/`; } function linkifyKeyword(node, keyword) { if (linkCount >= MAX_LINKS) return; if (linkedKeywords.has(keyword.toLowerCase())) return; const regex = new RegExp(`\\b${keyword}\\b`, 'gi'); const text = node.nodeValue; let match = regex.exec(text); if (!match) return; // Only link first occurrence linkedKeywords.add(keyword.toLowerCase()); const span = document.createElement('span'); span.appendChild(document.createTextNode(text.substring(0, match.index))); const link = document.createElement('a'); link.href = getMeshDomainForKeyword(keyword); link.target = '_blank'; link.rel = 'noopener noreferrer'; link.style.fontWeight = '600'; link.style.textDecoration = 'none'; link.style.borderBottom = '1px solid #2196F3'; link.style.color = 'inherit'; link.appendChild(document.createTextNode(match[0])); span.appendChild(link); span.appendChild(document.createTextNode(text.substring(match.index + match[0].length))); node.parentNode.replaceChild(span, node); linkCount++; } function processNode(node) { if (linkCount >= MAX_LINKS) return; if (node.nodeType === Node.TEXT_NODE) { const text = node.nodeValue.toLowerCase(); for (const keyword of KEYWORDS_TO_LINK) { if (text.includes(keyword.toLowerCase())) { linkifyKeyword(node, keyword); if (linkCount >= MAX_LINKS) return; } } } else if (node.nodeType === Node.ELEMENT_NODE && node.nodeName !== 'A' && node.nodeName !== 'SCRIPT' && node.nodeName !== 'STYLE') { // Process child nodes for (let i = 0; i < node.childNodes.length && linkCount < MAX_LINKS; i++) { processNode(node.childNodes[i]); } } } function addInternalCrossLinks() { const article = document.querySelector('article') || document.querySelector('.post-content') || document.querySelector('.entry-content') || document.querySelector('main'); if (!article) return; // Get all article headings on site const h1 = article.querySelector('h1'); if (!h1) return; const currentTitle = h1.textContent.toLowerCase(); // Create cross-link widget const crossLinkBox = document.createElement('div'); crossLinkBox.style.cssText = ` background: #f0f7ff; border-left: 4px solid #2196F3; padding: 12px 16px; margin: 20px 0; border-radius: 4px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; font-size: 13px; `; const label = document.createElement('div'); label.style.cssText = 'font-weight: 600; color: #2196F3; margin-bottom: 8px;'; label.textContent = 'Related Articles:'; crossLinkBox.appendChild(label); // Find related articles (mock - in real scenario, fetch from WordPress API) const relatedKeywords = ['security', 'privacy', 'encryption', 'backup']; const linksList = document.createElement('div'); linksList.style.cssText = 'display: flex; flex-direction: column; gap: 6px;'; relatedKeywords.forEach((keyword, idx) => { if (idx >= 2) return; // Max 2 cross-links const link = document.createElement('a'); link.href = `/?s=${encodeURIComponent(keyword)}`; link.style.cssText = 'color: #2196F3; text-decoration: none; font-weight: 500;'; link.textContent = `â More about ${keyword}`; linksList.appendChild(link); }); crossLinkBox.appendChild(linksList); // Insert cross-link box const lastPara = article.querySelector('p:last-of-type'); if (lastPara) { lastPara.parentNode.insertBefore(crossLinkBox, lastPara.nextSibling); } } function scanAndLink() { const article = document.querySelector('article') || document.querySelector('.post-content') || document.querySelector('.entry-content') || document.querySelector('main'); if (!article) return; processNode(article); addInternalCrossLinks(); } // Run on page load if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', scanAndLink); } else { scanAndLink(); } })(); /** * WikiWax Ad Zone Manager * Creates designated placeholder ad zones for Ezoic or direct ad fill * Zones: after-title (728x90), in-content (300x250 every 3rd para), sidebar (300x600), footer (728x90) * Responsive: hides large formats on mobile, shows mobile-optimized sizes */ (function() { 'use strict'; const isMobile = window.innerWidth < 768; // Create stylesheet for ad zones const style = document.createElement('style'); style.textContent = ` .wikiwax-ad-zone { background: #fafafa; border: 1px dashed #ddd; border-radius: 4px; display: flex; align-items: center; justify-content: center; color: #aaa; font-size: 12px; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; font-weight: 500; overflow: hidden; } .wikiwax-ad-zone-label { position: absolute; top: 4px; left: 4px; font-size: 9px; color: #ccc; text-transform: uppercase; letter-spacing: 0.5px; } /* After-title zone */ .wikiwax-ad-zone-after-title { width: 100%; height: 90px; margin: 20px 0; } /* In-content zone (300x250) */ .wikiwax-ad-zone-in-content { width: 300px; height: 250px; margin: 20px auto; float: left; margin-right: 20px; } /* Sidebar zone (300x600) */ .wikiwax-ad-zone-sidebar { width: 100%; height: 600px; margin: 20px 0; } /* Footer zone (728x90) */ .wikiwax-ad-zone-footer { width: 100%; height: 90px; margin: 20px 0; } /* Mobile responsive */ @media (max-width: 768px) { .wikiwax-ad-zone-in-content { width: 100%; height: auto; min-height: 250px; float: none; margin: 20px 0; } .wikiwax-ad-zone-sidebar { width: 100%; height: 250px; } .wikiwax-ad-zone-after-title { height: 50px; } .wikiwax-ad-zone-footer { height: 50px; } } /* When ad loads, remove border */ .wikiwax-ad-zone.ad-loaded { background: transparent; border: none; } .wikiwax-ad-zone.ad-loaded .wikiwax-ad-zone-label { display: none; } `; document.head.appendChild(style); function createAdZone(type, placement) { const zone = document.createElement('div'); zone.className = `wikiwax-ad-zone wikiwax-ad-zone-${type}`; zone.setAttribute('data-ad-type', type); zone.setAttribute('data-ad-placement', placement); const label = document.createElement('div'); label.className = 'wikiwax-ad-zone-label'; label.textContent = `${type} ad`; zone.appendChild(label); const placeholder = document.createElement('div'); placeholder.style.width = '100%'; placeholder.style.height = '100%'; placeholder.style.display = 'flex'; placeholder.style.alignItems = 'center'; placeholder.style.justifyContent = 'center'; placeholder.textContent = 'Ad'; zone.appendChild(placeholder); return zone; } function insertAdZones() { const article = document.querySelector('article') || document.querySelector('.post-content') || document.querySelector('.entry-content') || document.querySelector('main'); if (!article) return; // 1. After-title zone (after h1 or first heading) const h1 = article.querySelector('h1'); if (h1) { const afterTitleZone = createAdZone('after-title', 'post-header'); h1.parentNode.insertBefore(afterTitleZone, h1.nextSibling); } // 2. In-content zones (every 3rd paragraph) const paragraphs = article.querySelectorAll('p'); let zoneCount = 0; for (let i = 2; i < paragraphs.length; i += 3) { if (zoneCount >= 1) break; // Max 1 in-content zone to avoid clutter const inContentZone = createAdZone('in-content', `para-${i}`); paragraphs[i].parentNode.insertBefore(inContentZone, paragraphs[i].nextSibling); zoneCount++; } // 3. Sidebar zone (if sidebar exists) const sidebar = document.querySelector('.sidebar') || document.querySelector('aside') || document.querySelector('.widgetarea'); if (sidebar) { const sidebarZone = createAdZone('sidebar', 'sidebar-primary'); sidebar.insertBefore(sidebarZone, sidebar.firstChild); } // 4. Footer zone (at end of article) const footerZone = createAdZone('footer', 'post-footer'); article.appendChild(footerZone); } // Expose global API for ad networks to mark zones as loaded window.WikiWaxAds = { markZoneLoaded: function(type) { const zone = document.querySelector(`[data-ad-type="${type}"]`); if (zone) { zone.classList.add('ad-loaded'); } } }; // Run on page load if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', insertAdZones); } else { insertAdZones(); } })(); /** * WikiWax Contextual Affiliate Inserter * Auto-detects product mentions in article content and inserts affiliate recommendation boxes * Amazon Associates Tag: 2mrcarter-20 * Max 3 insertions per page */ (function() { 'use strict'; // Product categories to detect const PRODUCT_CATEGORIES = { 'headphones': { name: 'Headphones & Earbuds', query: 'best headphones' }, 'laptop': { name: 'Laptops & Computers', query: 'best laptop' }, 'phone': { name: 'Smartphones', query: 'best phone' }, 'camera': { name: 'Digital Cameras', query: 'best camera' }, 'keyboard': { name: 'Keyboards', query: 'best keyboard' }, 'monitor': { name: 'Computer Monitors', query: 'best monitor' }, 'tablet': { name: 'Tablets', query: 'best tablet' }, 'speaker': { name: 'Speakers', query: 'best speaker' }, 'charger': { name: 'Phone Chargers', query: 'best charger' }, 'mouse': { name: 'Computer Mouse', query: 'best mouse' }, 'software': { name: 'Software & Apps', query: 'software deals' }, 'hosting': { name: 'Web Hosting', query: 'web hosting' }, 'vpn': { name: 'VPN Services', query: 'best vpn' }, 'antivirus': { name: 'Antivirus Software', query: 'best antivirus' } }; const AMAZON_TAG = '2mrcarter-20'; const MAX_INSERTIONS = 3; let insertionCount = 0; function createAffiliateBox(productKey, productData) { const box = document.createElement('div'); box.className = 'wikiwax-affiliate-box'; box.innerHTML = `

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As an Amazon Associate, WikiWax earns from qualifying purchases.

`; return box; } function scanAndInsert() { // Get main content area (works with most WP themes) const contentArea = document.querySelector('article') || document.querySelector('.post-content') || document.querySelector('.entry-content') || document.querySelector('main'); if (!contentArea) return; const paragraphs = contentArea.querySelectorAll('p'); const detectedProducts = new Map(); // Scan paragraphs for product keywords paragraphs.forEach((para) => { const text = para.textContent.toLowerCase(); for (const [key, data] of Object.entries(PRODUCT_CATEGORIES)) { if (text.includes(key) && !detectedProducts.has(key)) { detectedProducts.set(key, data); } } }); // Insert affiliate boxes after relevant paragraphs (max 3) const productsToInsert = Array.from(detectedProducts.entries()).slice(0, MAX_INSERTIONS); let paraIndex = 0; productsToInsert.forEach(([productKey, productData]) => { const targetPara = paragraphs[Math.floor(paragraphs.length / (productsToInsert.length + 1)) * (paraIndex + 1)]; if (targetPara) { const box = createAffiliateBox(productKey, productData); targetPara.parentNode.insertBefore(box, targetPara.nextSibling); insertionCount++; } paraIndex++; }); } // Run on page load if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', scanAndInsert); } else { scanAndInsert(); } // Also run after a small delay to catch dynamically loaded content setTimeout(scanAndInsert, 1500); })();